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EP3793851A1 - Hybrid module having torque-transmitting gears - Google Patents

Hybrid module having torque-transmitting gears

Info

Publication number
EP3793851A1
EP3793851A1 EP19707691.2A EP19707691A EP3793851A1 EP 3793851 A1 EP3793851 A1 EP 3793851A1 EP 19707691 A EP19707691 A EP 19707691A EP 3793851 A1 EP3793851 A1 EP 3793851A1
Authority
EP
European Patent Office
Prior art keywords
gear
torque
hybrid module
input shaft
output shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19707691.2A
Other languages
German (de)
French (fr)
Inventor
Benjamin Stober
Steffen Lehmann
Lionel Huber
Marc Helfer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP3793851A1 publication Critical patent/EP3793851A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/40—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the assembly or relative disposition of components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4825—Electric machine connected or connectable to gearbox input shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K2006/4833—Step up or reduction gearing driving generator, e.g. to operate generator in most efficient speed range
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
    • F16H1/06—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the invention relates to a hybrid module for a (hybrid) motor vehicle, with a drive machine, such as an electric machine or an internal combustion engine, the torque torque further with a example Brennennungskraftmotorisch or electric motor driven torque input shaft or torque output shaft (hereinafter for simplicity's sake, as a torque input shaft), such as a transmission input shaft or as a crankshaft is connected, wherein an output shaft or a drive shaft (hereinafter referred to simply as the output shaft) of the drive engine is arranged axially parallel to the torque input shaft.
  • a drive machine such as an electric machine or an internal combustion engine
  • a torque input shaft such as a transmission input shaft or as a crankshaft
  • Hybrid modules with an axially parallel drive unit are already known from the prior art.
  • DE 10 2016 212 846 A1 discloses a clutch arrangement for a drive train of a motor vehicle having an electric machine and an internal combustion engine, the torque of which can be brought to a transmission through a clutch unit, wherein a separating coupling between a coupling member, for introducing torque the electric machine is prepared in the direction of the clutch unit, and a transmission member drivable internal combustion engine side is arranged, wherein the electric machine is arranged so that its axis of rotation aligned with a rotation axis around which rotate the components of the clutch assembly in operation, aligned formed as a chain Endloszugstoff for transmitting torque from the electric machine is used towards the coupling member.
  • a hybrid module is thus constructed so that it is bolted to a combustion engine and a bell crank. Other interfaces are connections to a crankshaft of the internal combustion engine, to an electric machine / electric motor and to an air conditioning compressor.
  • a damper, a clutch and an actuator system are integrated.
  • the hybrid module is filled with oil in order to cool the clutch and lubricate the components arranged inside the hybrid module.
  • the coupling is used to pelbaren connection of the internal combustion engine with the transmission and the electric motor, it is also referred to as a clutch KO.
  • the electric motor is arranged parallel to the crankshaft or to the transmission input shaft.
  • the electric motor and the clutch or the transmission input shaft, which form a main driveline, are often connected via a main chain drive designed as a toothed chain.
  • the air-conditioning compressor can be connected to the electric motor via a secondary chain drive designed as a toothed chain.
  • toothed belts, poly-V belts or V-belts are also used.
  • the prior art always has the disadvantage that in a system in which, as described above, the main drive train is connected via a chain drive, corresponding to the ratio between the electric motor and the transmission input shaft high chain speeds occur, which disadvantageously to a high Loading the chain, for example by friction or centrifugal forces leads.
  • the chain is therefore a critical component.
  • the use of a chain entails an additional expense, since in a chain system, a chain tensioning mechanism must be present in order to tension or retighten the chains.
  • a hybrid module is to be provided in which, in particular, the main drive train is not connected via a toothed chain in order to avoid the disadvantages when using a toothed chain.
  • an alternative for the main chain drive is to be provided, which provides a satisfactory torque transmission in the given conditions with respect to position of the crankshaft to the electric motor, translation, etc.
  • the object of the invention is achieved according to the invention in a generic device in that at least two gear teeth intermeshing / meshing with each other are connected to the output shaft and the torque input shaft for torque transmission between the output shaft and the torque input shaft. So at least one first tooth wheel, which meshes with a second gear, used for torque transmission. So that means that the Flaupttrieb is no longer realized via a toothed chain, but via gears. The torque transmission is thus realized by a gear stage.
  • this has the advantage that no mechanism for tensioning the toothed chain has to be provided, which has a favorable effect on the required installation space.
  • this has the advantage that torque transmission via gears is less stressed by friction and centrifugal forces or is more robust compared to the given stress.
  • gear wheels for transmitting torque of which a first gear is non-rotatably connected to the output shaft, a second gear is non-rotatably connected to the torque input shaft and a third gear is connected to the first and the second Gear is in gear engagement.
  • gears are arranged axially parallel to each other.
  • a torque transmission between two axially parallel shafts, such as the output shaft of the electric motor and the torque input shaft can be realized with a relatively small design effort in a simple manner.
  • the toothed wheels are designed as externally toothed spur gears.
  • the torque transmission can be ensured by a single-stage or multi-stage spur gear, in which additionally a desired gear ratio can be set variably. That's the way it is in a simple way possible to provide a required gear for the given conditions.
  • a helical toothing is formed between the first toothed wheel and the third toothed wheel and / or between the second toothed wheel and the third toothed wheel.
  • a helical gear with helical gears is used. This has the advantage that when meshing less hard shocks occur and thus vibrations are reduced and the transmission has a relatively quiet running. As a result, the resistance of the teeth can be increased. Alternatively, it is also possible to use straight-toothed gears.
  • a favorable embodiment is characterized in that between the first gear and the third gear and / or between the second gear and the third gear high toothing is formed. That is, gears with high profile coverage, i. with a tooth height factor> 1, with a tooth height factor> 2, are used in the helical gear unit. As a result, a generation of noise during gear engagement can be significantly reduced.
  • gearbox with a helical toothing with high-toothing since these are particularly inconspicuous with regard to acoustic properties.
  • a transmission ratio between the output shaft and the torque input shaft can be adjusted via the ratio of the number of teeth of the first gear to the number of teeth of the second gear.
  • a number of teeth disposed between the first and the second gear teeth is irrelevant to the gear ratio.
  • the size of the gear or gears arranged therebetween can be selected independently of the desired gear ratio. This enables an optimized design of this gear or these gears.
  • an outer diameter of the third gear is greater than an outer diameter of the first gear and / or the second gear.
  • first gear, the second gear and / or the third gear are supported by a thrust bearing / is.
  • axial forces resulting, for example, from the helical gearing can advantageously be intercepted.
  • the number of gear wheels is understood to be the number of gear wheels which are arranged between the output shaft-fixed first gear and the torque input shaft-fixed second gear including the first gear and the second gear. As a result, it is not necessary to reverse the direction of rotation of the drive machine.
  • the invention relates to an axis-parallel hybrid module with a gear stage.
  • the hybrid module in this case has an electric motor which is connected to a separating clutch, a crankshaft of an internal combustion engine or an output shaft by using toothed wheels instead of a chain or a belt.
  • the force is thus transmitted via three gears from the crankshaft to the e-machine or from the electric motor to the transmission input shaft or the crankshaft (via a (Disconnect) and a damper) transmitted. It is also possible to use two or more than three gears, but the application depends on the existing installation space. The space thus limits the size of the gears.
  • a ratio is set by the ratio of the number of teeth of the input and output shafts.
  • the tolerance situation is intercepted by a geometry of the gears or is finalized via the gear pairing during assembly. In the process, noticeable noise levels due to production-related tolerance fluctuations of the individual parts are to be avoided.
  • the toothing of the gears can be chosen in many ways. A serration is possible, a helical gearing is advantageous, a diagonal with high gearing is particularly advantageous. Occurring axial forces can be intercepted via a corresponding bearing of the gears.
  • FIG. 1 shows a longitudinal sectional illustration of a part of a hybrid module according to the invention with a gear stage as torque transmission between an axially parallel drive machine and a torque input shaft.
  • FIG. 1 shows a hybrid module 1 according to the invention, in which a prime mover 2 is connected to a torque input shaft 3 in terms of torque.
  • An output shaft 4 of the drive machine 2 is arranged axially parallel to the torque input shaft 3.
  • a first gear 5 is non-rotatably connected to the output shaft 4
  • a second gear 6 non-rotatably connected to the torque input shaft 3
  • the prime mover 2 is formed as an electric machine 8.
  • the output shaft 4 of the electric motor 8 and thus also the first gear 5 are arranged axially parallel to the second gear 6 and to the third gear 7.
  • the second gear 6 is arranged axially parallel to the third gear 7.
  • the torque input shaft 3 may be a transmission input shaft, a crankshaft or a disconnect clutch.
  • the first gear 5, the second gear 6 and the third gear 7 each have an outer toothing.
  • the external toothing of the third toothed wheel 7 meshes both with the external toothing of the first toothed wheel 5 and with the external toothing of the second toothed wheel 6.
  • An outer diameter of the first toothed wheel 5 corresponds approximately to an outer diameter of the third toothed wheel 7.
  • An outer diameter of the second toothed wheel 6 is about three times as large as an outer diameter of the third gear. 7
  • the teeth of the gears 5, 6, 7 may be formed straight teeth, helical teeth, high-toothed or helical teeth.
  • the electric motor 8 is connected via a secondary chain drive 9 to transmit torque to an air-conditioning compressor 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The invention relates to a hybrid module (1) for a motor vehicle, having a prime mover (2), which is connected to a torque input shaft (3) in a torque-transmitting manner, wherein an output shaft (4) of the prime mover (2) is arranged axis-parallel to the torque input shaft (3), at least two gears (5, 6) in toothed engagement with one another being connected to the output shaft (4) and to the torque input shaft (3).

Description

Hybridmodul mit Drehmoment übertragenden Zahnrädern  Hybrid module with torque transmitting gears
Die Erfindung betrifft ein Hybridmodul für ein (Hybrid-)Kraftfahrzeug, mit einer An- triebsmaschine, wie einer elektrischen Maschine oder einer Verbrennungskraftma- schine, die drehmomentweitergebend mit einer beispielsweise verbrennungskraftmo- torisch oder elektromotorisch antreibbaren Drehmomenteingangswelle bzw. Drehmo- mentausgangswelle (im Folgenden der einfachheitshalber als Drehmomenteingangs- welle bezeichnet), wie einer Getriebeeingangswelle oder wie einer Kurbelwelle, ver- bunden ist, wobei eine Abtriebswelle bzw. eine Antriebswelle (im Folgenden der ein- fachheitshalber als Abtriebswelle bezeichnet) der Antriebsmaschine achsparallel zu der Drehmomenteingangswelle angeordnet ist. The invention relates to a hybrid module for a (hybrid) motor vehicle, with a drive machine, such as an electric machine or an internal combustion engine, the torque torque further with a example Brennennungskraftmotorisch or electric motor driven torque input shaft or torque output shaft (hereinafter for simplicity's sake, as a torque input shaft), such as a transmission input shaft or as a crankshaft is connected, wherein an output shaft or a drive shaft (hereinafter referred to simply as the output shaft) of the drive engine is arranged axially parallel to the torque input shaft.
Aus dem Stand der Technik sind bereits Hybridmodule mit einer achsparallel ange- ordneten Antriebsmaschine bekannt. Zum Beispiel offenbart die DE 10 2016 212 846 A1 eine Kupplungsanordnung für einen Antriebsstrang eines Kraftfahrzeugs mit einer Elektromaschine und einer Verbrennungskraftmaschine, deren Drehmoment zu einem Getriebe durch ein Kupplungsaggregat hindurch verbringbar ist, wobei eine Trenn- kupplung zwischen einem Koppelorgan , das zum Einleiten von Drehmoment der Elektromaschine in Richtung des Kupplungsaggregates vorbereitet ist, und einem Verbrennungskraftmaschinenseitig antreibbaren Übertragungsorgan angeordnet ist, wobei die Elektromaschine so angeordnet ist, dass deren Rotationsachse außer Flucht mit einer Rotationsachse, um die die Bauteile des Kupplungsaggregates im Be- trieb rotieren, ausgerichtet ist, wobei ein als Kette ausgebildetes Endloszugmittel zur Übertragung eines Drehmoments von der Elektromaschine hin zum Koppelorgan ein- gesetzt ist. Hybrid modules with an axially parallel drive unit are already known from the prior art. For example, DE 10 2016 212 846 A1 discloses a clutch arrangement for a drive train of a motor vehicle having an electric machine and an internal combustion engine, the torque of which can be brought to a transmission through a clutch unit, wherein a separating coupling between a coupling member, for introducing torque the electric machine is prepared in the direction of the clutch unit, and a transmission member drivable internal combustion engine side is arranged, wherein the electric machine is arranged so that its axis of rotation aligned with a rotation axis around which rotate the components of the clutch assembly in operation, aligned formed as a chain Endloszugmittel for transmitting torque from the electric machine is used towards the coupling member.
Üblicherweise ist ein Hybridmodul also so aufgebaut, dass es mit einer Verbren- nungskraftmaschine und einer Getriebeglocke verschraubt ist. Weitere Schnittstellen sind Verbindungen zu einer Kurbelwelle der Verbrennungskraftmaschine, zu einer elektrischen Maschine/E-Maschine sowie zu einem Klimakompresser. Im Hybridmodul sind ein Dämpfer, eine Kupplung und ein Aktorsystem integriert. Außerdem ist das Hybridmodul mit Öl befüllt, um die Kupplung zu kühlen und die innerhalb des Hyb- ridmoduls angeordneten Bauteile schmieren zu können. Die Kupplung dient zur kop- pelbaren Verbindung der Verbrennungskraftmaschine mit dem Getriebe und der E- Maschine, sie wird auch als Trennkupplung KO bezeichnet. Die E-Maschine ist achs- parallel zu der Kurbelwelle bzw. zur Getriebeeingangswelle angeordnet. Die E- Maschine und die Kupplung bzw. die Getriebeeingangswelle, die einen Hauptan- triebsstrang bilden, sind oftmals über einen als Zahnkette ausgebildeten Hauptketten- treib verbunden. Ferner kann der Klimakompressor über einen als Zahnkette ausge- bildeten Nebenkettentrieb mit der E-Maschine verbunden sein. Als alternative Mög- lichkeit zur Verbindung des achsparallelen Hybridmoduls werden auch Zahnriemen, Poly-V-Riemen oder Keilriemen eingesetzt. Usually, a hybrid module is thus constructed so that it is bolted to a combustion engine and a bell crank. Other interfaces are connections to a crankshaft of the internal combustion engine, to an electric machine / electric motor and to an air conditioning compressor. In the hybrid module, a damper, a clutch and an actuator system are integrated. In addition, the hybrid module is filled with oil in order to cool the clutch and lubricate the components arranged inside the hybrid module. The coupling is used to pelbaren connection of the internal combustion engine with the transmission and the electric motor, it is also referred to as a clutch KO. The electric motor is arranged parallel to the crankshaft or to the transmission input shaft. The electric motor and the clutch or the transmission input shaft, which form a main driveline, are often connected via a main chain drive designed as a toothed chain. Furthermore, the air-conditioning compressor can be connected to the electric motor via a secondary chain drive designed as a toothed chain. As an alternative option for connecting the axis-parallel hybrid module, toothed belts, poly-V belts or V-belts are also used.
Der Stand der Technik hat jedoch immer den Nachteil, dass bei einem System, bei dem wie oben beschrieben der Hauptantriebsstrang über einen Kettentrieb verbunden ist, entsprechend der Übersetzung zwischen der E-Maschine und der Getriebeein- gangswelle hohe Kettengeschwindigkeiten auftreten, was nachteiligerweise zu einer hohen Belastung der Kette beispielsweise durch Reibung oder Fliehkräfte führt. Die Kette ist also ein kritisches Bauteil. Ferner zieht der Einsatz einer Kette einen zusätzli- chen Aufwand nach sich, da bei einem Kettensystem ein Kettenspannmechanismus vorhanden sein muss, um die Ketten spannen bzw. nachspannen zu können. However, the prior art always has the disadvantage that in a system in which, as described above, the main drive train is connected via a chain drive, corresponding to the ratio between the electric motor and the transmission input shaft high chain speeds occur, which disadvantageously to a high Loading the chain, for example by friction or centrifugal forces leads. The chain is therefore a critical component. Furthermore, the use of a chain entails an additional expense, since in a chain system, a chain tensioning mechanism must be present in order to tension or retighten the chains.
Es ist also die Aufgabe der Erfindung, die Nachteile aus dem Stand der Technik zu vermeiden oder wenigstens zu verringern. Insbesondere soll ein Hybridmodul bereit- gestellt werden, bei dem insbesondere der Hauptantriebsstrang nicht über eine Zahn- kette verbunden ist, um die Nachteile beim Einsatz einer Zahnkette zu vermeiden. Dabei soll eine Alternative für den Hauptkettentrieb bereitgestellt werden, die bei den gegebenen Rahmenbedingungen hinsichtlich Position der Kurbelwelle zu der E- Maschine, Übersetzung etc. eine zufriedenstellende Drehmomentübertragung vor- sieht. It is therefore the object of the invention to avoid or at least reduce the disadvantages of the prior art. In particular, a hybrid module is to be provided in which, in particular, the main drive train is not connected via a toothed chain in order to avoid the disadvantages when using a toothed chain. In this case, an alternative for the main chain drive is to be provided, which provides a satisfactory torque transmission in the given conditions with respect to position of the crankshaft to the electric motor, translation, etc.
Die Aufgabe der Erfindung wird bei einer gattungsgemäßen Vorrichtung erfindungs- gemäß dadurch gelöst, dass zumindest zwei miteinander in Verzahnungseingriff ste- hende/miteinander kämmende Zahnräder zur Drehmomentübertragung zwischen der Abtriebswelle und der Drehmomenteingangswelle mit der Abtriebswelle und der Drehmomenteingangswelle verbunden sind. Es wird also zumindest ein erstes Zahn- rad, das mit einem zweiten Zahnrad kämmt, zur Drehmomentübertragung eingesetzt. Das heißt also, dass der Flaupttrieb nicht mehr über eine Zahnkette, sondern über Zahnräder realisiert ist. Die Drehmomentübertragung wird also durch eine Zahnrad- stufe realisiert. The object of the invention is achieved according to the invention in a generic device in that at least two gear teeth intermeshing / meshing with each other are connected to the output shaft and the torque input shaft for torque transmission between the output shaft and the torque input shaft. So at least one first tooth wheel, which meshes with a second gear, used for torque transmission. So that means that the Flaupttrieb is no longer realized via a toothed chain, but via gears. The torque transmission is thus realized by a gear stage.
Dies hat zum einen den Vorteil, dass kein Mechanismus zum Spannen der Zahnkette bereitgestellt werden muss, was sich günstig auf den erforderlichen Bauraum aus- wirkt. Dies hat zum anderen den Vorteil, dass eine Drehmomentübertragung über Zahnräder weniger durch Reibung und Fliehkräfte beansprucht ist bzw. robuster ge- genüber der gegebenen Beanspruchung ist. On the one hand, this has the advantage that no mechanism for tensioning the toothed chain has to be provided, which has a favorable effect on the required installation space. On the other hand, this has the advantage that torque transmission via gears is less stressed by friction and centrifugal forces or is more robust compared to the given stress.
Vorteilhafte Ausführungsformen sind in den Unteransprüchen beansprucht und wer- den nachfolgend näher erläutert. Advantageous embodiments are claimed in the subclaims and are explained in more detail below.
Ferner ist es von Vorteil, wenn zumindest drei Zahnräder zur Drehmomentübertra- gung vorhanden sind, von denen ein erstes Zahnrad drehfest mit der Abtriebswelle verbunden ist, ein zweites Zahnrad drehfest mit der Drehmomenteingangswelle ver- bunden ist und ein drittes Zahnrad mit dem ersten und dem zweiten Zahnrad in Ver- zahnungseingriff steht. Dadurch kann in vorteilhafterweise Bauraum, insbesondere radialer Bauraum, eingespart werden, da dann Zahnräder mit einem verhältnismäßig kleinen Durchmesser eingesetzt werden können. Furthermore, it is advantageous if there are at least three gear wheels for transmitting torque, of which a first gear is non-rotatably connected to the output shaft, a second gear is non-rotatably connected to the torque input shaft and a third gear is connected to the first and the second Gear is in gear engagement. As a result, space can be saved in an advantageous manner, in particular radial space, since then gears with a relatively small diameter can be used.
Weiterhin ist es zweckmäßig, wenn die Zahnräder achsparallel zueinander angeord- net sind. So kann in einfacher Weise eine Drehmomentübertragung zwischen zwei achsparallelen Wellen, wie der Abtriebswelle der E-Maschine und der Drehmoment- eingangswelle, mit einem verhältnismäßig kleinen konstruktiven Aufwand realisiert werden. Furthermore, it is expedient if the gears are arranged axially parallel to each other. Thus, a torque transmission between two axially parallel shafts, such as the output shaft of the electric motor and the torque input shaft can be realized with a relatively small design effort in a simple manner.
Zudem ist es bevorzugt, wenn die Zahnräder als außenverzahnte Stirnräder ausgebil- det sind. So kann die Drehmomentübertragung durch ein einstufiges oder mehrstufi- ges Stirnradgetriebe sichergestellt werden, bei der zusätzlich ein gewünschtes Über- setzungsverhältnis variabel eingestellt werden kann. So ist es in einfacher Weise möglich, für die vorgegebenen Rahmenbedingungen ein erforderliches Getriebe be- reitzustellen. In addition, it is preferred if the toothed wheels are designed as externally toothed spur gears. Thus, the torque transmission can be ensured by a single-stage or multi-stage spur gear, in which additionally a desired gear ratio can be set variably. That's the way it is in a simple way possible to provide a required gear for the given conditions.
Besonders bevorzugt ist es, wenn zwischen dem ersten Zahnrad und dem dritten Zahnrad und/oder zwischen dem zweiten Zahnrad und dem dritten Zahnrad eine Schrägverzahnung ausgebildet ist. Das heißt, dass ein Stirnradgetriebe mit schräg- verzahnten Zahnrädern verwendet wird. Dies hat den Vorteil, dass beim Zahneingriff weniger harte Stöße entstehen und somit Schwingungen reduziert werden und das Getriebe einen verhältnismäßig leisen Lauf hat. Dadurch kann auch die Beständigkeit der Zähne gesteigert werden. Alternativ ist es auch möglich, geradeverzahnte Zahn- räder einzusetzen. It is particularly preferred if a helical toothing is formed between the first toothed wheel and the third toothed wheel and / or between the second toothed wheel and the third toothed wheel. This means that a helical gear with helical gears is used. This has the advantage that when meshing less hard shocks occur and thus vibrations are reduced and the transmission has a relatively quiet running. As a result, the resistance of the teeth can be increased. Alternatively, it is also possible to use straight-toothed gears.
Ferner zeichnet sich ein günstiges Ausführungsbeispiel dadurch aus, dass zwischen dem ersten Zahnrad und dem dritten Zahnrad und/oder zwischen dem zweiten Zahn- rad und dem dritten Zahnrad eine Hochverzahnung ausgebildet ist. Das heißt, dass Zahnräder mit hoher Profilüberdeckung, d.h. mit einem Zahnhöhenfaktor > 1 , ver- zugsweise mit einem Zahnhöhenfaktor >2, in dem Stirnradgetriebe eingesetzt werden. Dadurch kann eine Entstehung von Geräuschen beim Verzahnungseingriff erheblich reduziert werden. Furthermore, a favorable embodiment is characterized in that between the first gear and the third gear and / or between the second gear and the third gear high toothing is formed. That is, gears with high profile coverage, i. with a tooth height factor> 1, with a tooth height factor> 2, are used in the helical gear unit. As a result, a generation of noise during gear engagement can be significantly reduced.
Besonders bevorzugt ist es, ein Getriebe mit einer Schrägverzahnung mit Hochver- zahnung eingesetzt wird, da diese besonders unauffällig hinsichtlich akustischer Ei- genschaften sind. It is particularly preferred to use a gearbox with a helical toothing with high-toothing, since these are particularly inconspicuous with regard to acoustic properties.
Außerdem ist es von Vorteil, wenn ein Übersetzungsverhältnis zwischen der Ab- triebswelle und der Drehmomenteingangswelle über das Verhältnis der Anzahl an Zähnen des ersten Zahnrads zu der Anzahl an Zähnen des zweiten Zahnrads ein- stellbar ist. Dabei ist eine Anzahl an Zähne der zwischen dem ersten und dem zweiten Zahnrad angeordneten Zähne unerheblich für das Übersetzungsverhältnis. So kann die Größe des bzw. der dazwischen angeordneten Zahnrad bzw. Zahnräder unab- hängig vom gewünschten Übersetzungsverhältnis gewählt werden. Damit ist eine op- timierte Auslegung dieses Zahnrads bzw. dieser Zahnräder ermöglicht. Ferner ist es zweckmäßig, wenn ein Außendurchmesser des dritten Zahnrads größer ist als ein Außendurchmesser des ersten Zahnrads und/oder des zweiten Zahnrads.Moreover, it is advantageous if a transmission ratio between the output shaft and the torque input shaft can be adjusted via the ratio of the number of teeth of the first gear to the number of teeth of the second gear. In this case, a number of teeth disposed between the first and the second gear teeth is irrelevant to the gear ratio. Thus, the size of the gear or gears arranged therebetween can be selected independently of the desired gear ratio. This enables an optimized design of this gear or these gears. Furthermore, it is expedient if an outer diameter of the third gear is greater than an outer diameter of the first gear and / or the second gear.
Es soll also ein möglichst groß ausgebildetes drittes Zahnrad, das als ein Zwischenrad dient, eingesetzt werden, damit die Drehzahl des Zwischenrads niedrig gehalten wer- den kann. Außerdem ist das Zwischenrad verhältnismäßig stark belastet, da sowohl das erste Zahnrad als auch das zweite Zahnrad in das Zwischenrad eingreifen und Kräfte ein- bzw. ausleiten, weshalb es günstig ist, das Zwischenrad mit einem (Außen- ) Durchmesser auszugestalten, der vorzugsweise zwischen einem 0,8- und einem 1 ,5- fachen der Größe des (Außen-) Durchmessers des ersten Zahnrads beträgt. It is therefore intended to use a third gear which is as large as possible, which serves as an intermediate gear, so that the speed of the idler gear can be kept low. In addition, the idler gear is relatively heavily loaded, since both the first gear and the second gear engage in the idler and forces on and out, which is why it is advantageous to design the idler with an (outer) diameter, preferably between a 0.8 and a 1.5 times the size of the (outer) diameter of the first gear.
Weiterhin ist es bevorzugt, wenn das erste Zahnrad, das zweite Zahnrad und/oder das dritte Zahnrad durch ein Axiallager gelagert sind/ist. Somit können in vorteilhafter- weise beispielsweise durch die Schrägverzahnung entstehende Axialkräfte abgefan- gen werden. Furthermore, it is preferred if the first gear, the second gear and / or the third gear are supported by a thrust bearing / is. Thus, axial forces resulting, for example, from the helical gearing can advantageously be intercepted.
Zudem ist es von Vorteil, wenn eine ungerade Anzahl von Zahnrädern zur Drehmo- mentübertragung zwischen der Abtriebswelle und der Drehmomenteingangswelle an- geordnet ist. Dabei wird unter der Anzahl der Zahnräder die Zahl der Zahnräder ver- standen, die zwischen dem abtriebswellenfesten, ersten Zahnrad und dem drehmo- menteingangswellenfesten, zweiten Zahnrad einschließlich des ersten Zahnrads und des zweiten Zahnrads angeordnet sind. Dadurch ist es nicht notwendig, die Drehrich- tung der Antriebsmaschine umzukehren. In addition, it is advantageous if an odd number of gears for torque transmission between the output shaft and the torque input shaft is arranged. In this case, the number of gear wheels is understood to be the number of gear wheels which are arranged between the output shaft-fixed first gear and the torque input shaft-fixed second gear including the first gear and the second gear. As a result, it is not necessary to reverse the direction of rotation of the drive machine.
Mit anderen Worten betrifft die Erfindung ein achsparalleles Hybridmodul mit einer Zahnradstufe. Das Hybridmodul weist dabei eine E-Maschine auf, die mit einer Trenn- kupplung, einer Kurbelwelle einer Verbrennungskraftmaschine oder einer Ausgangs- welle verbunden ist, indem Zahnräder anstelle einer Kette oder eines Riemens ver- wendet werden. In other words, the invention relates to an axis-parallel hybrid module with a gear stage. The hybrid module in this case has an electric motor which is connected to a separating clutch, a crankshaft of an internal combustion engine or an output shaft by using toothed wheels instead of a chain or a belt.
Die Kraft wird somit über drei Zahnräder von der Kurbelwelle auf die E-Maschine oder von der E-Maschine auf die Getriebeeingangswelle bzw. die Kurbelwelle (über eine (Trenn-)Kupplung und einen Dämpfer) übertragen. Es ist auch möglich, zwei oder mehr als drei Zahnräder einzusetzen, jedoch ist die Anwendung von dem vorhande- nen Bauraum abhängig. Der Bauraum begrenzt also die Größe der Zahnräder. Eine Übersetzung wird über das Verhältnis der Anzahl der Zähne der Eingangs- und der Ausgangswelle eingestellt. The force is thus transmitted via three gears from the crankshaft to the e-machine or from the electric motor to the transmission input shaft or the crankshaft (via a (Disconnect) and a damper) transmitted. It is also possible to use two or more than three gears, but the application depends on the existing installation space. The space thus limits the size of the gears. A ratio is set by the ratio of the number of teeth of the input and output shafts.
Die Toleranzsituation wird über eine Geometrie der Zahnräder abgefangen bzw. wird über die Zahnradpaarung bei der Montage final abgestimmt. Dabei sollen auffällig Ge- räuschpegel durch fertigungsbedingte Toleranzschwankungen der Einzelteile vermie- den werden. Die Verzahnung der Zahnräder kann vielfältig gewählt werden. Eine Ge- radeverzahnung ist möglich, eine Schrägverzahnung ist vorteilhaft, eine Schräg- mit Hochverzahnung ist besonders vorteilhaft. Auftretende Axialkräfte können über eine entsprechende Lagerung der Zahnräder abgefangen werden. The tolerance situation is intercepted by a geometry of the gears or is finalized via the gear pairing during assembly. In the process, noticeable noise levels due to production-related tolerance fluctuations of the individual parts are to be avoided. The toothing of the gears can be chosen in many ways. A serration is possible, a helical gearing is advantageous, a diagonal with high gearing is particularly advantageous. Occurring axial forces can be intercepted via a corresponding bearing of the gears.
Die Erfindung wird nachfolgend mit Hilfe einer Zeichnung erläutert. Es zeigt: The invention will be explained below with the aid of a drawing. It shows:
Fig. 1 eine Längsschnittdarstellung eines Teils eines erfindungsgemäßen Hybridmo- duls mit einer Zahnradstufe als Drehmomentübertragung zwischen einer achsparalle- len Antriebsmaschine und einer Drehmomenteingangswelle. 1 shows a longitudinal sectional illustration of a part of a hybrid module according to the invention with a gear stage as torque transmission between an axially parallel drive machine and a torque input shaft.
Die Figuren sind lediglich schematischer Natur und dienen ausschließlich dem Ver- ständnis der Erfindung. Die gleichen Elemente sind mit denselben Bezugszeichen ge- kennzeichnet. The figures are merely schematic in nature and serve only to understand the invention. The same elements are identified by the same reference numerals.
Fig. 1 zeigt ein erfindungsgemäßes Hybridmodul 1 , bei dem eine Antriebsmaschine 2 drehmomentweitergebend mit einer Drehmomenteingangswelle 3 verbunden ist. Eine Abtriebswelle 4 der Antriebsmaschine 2 ist achsparallel zu der Drehmomentein- gangswelle 3 angeordnet. Zur Drehmomentübertragung zwischen der Abtriebswelle 4 und der Drehmomenteingangswelle 3 ist ein erstes Zahnrad 5 drehfest mit der Ab- triebswelle 4 verbunden, ein zweites Zahnrad 6 drehfest mit der Drehmomentein- gangswelle 3 verbunden und ein drittes Zahnrad 7, das als ein Zwischenrad dient, vorhanden, das mit dem ersten Zahnrad 5 und mit dem zweiten Zahnrad 6 in Verzah- nungseingriff steht. Das heißt, dass das Drehmoment von der Abtriebswelle 4 auf die Drehmomenteingangswelle 3 über eine Zahnradstufe übertragen wird. 1 shows a hybrid module 1 according to the invention, in which a prime mover 2 is connected to a torque input shaft 3 in terms of torque. An output shaft 4 of the drive machine 2 is arranged axially parallel to the torque input shaft 3. For torque transmission between the output shaft 4 and the torque input shaft 3, a first gear 5 is non-rotatably connected to the output shaft 4, a second gear 6 non-rotatably connected to the torque input shaft 3 and a third gear 7, which serves as an intermediate, present that with the first gear 5 and with the second gear 6 in toothed interventions. That is, the torque is transmitted from the output shaft 4 to the torque input shaft 3 via a gear stage.
Die Antriebsmaschine 2 ist als eine E-Maschine 8 ausgebildet. Die Abtriebswelle 4 der E-Maschine 8 und somit auch das erste Zahnrad 5 sind achsparallel zu dem zweiten Zahnrad 6 und zu dem dritten Zahnrad 7 angeordnet. Das zweite Zahnrad 6 ist achs- parallel zu dem dritten Zahnrad 7 angeordnet. The prime mover 2 is formed as an electric machine 8. The output shaft 4 of the electric motor 8 and thus also the first gear 5 are arranged axially parallel to the second gear 6 and to the third gear 7. The second gear 6 is arranged axially parallel to the third gear 7.
Die Drehmomenteingangswelle 3 kann eine Getriebeeingangswelle, eine Kurbelwelle oder eine Trennkupplung sein. Das erste Zahnrad 5, das zweite Zahnrad 6 und das dritte Zahnrad 7 weisen jeweils eine Außenverzahnung auf. Dabei kämmt die Außen- verzahnung des dritten Zahnrads 7 sowohl mit der Außenverzahnung des ersten Zahnrads 5 als auch mit der Außenverzahnung des zweiten Zahnrads 6. Ein Außen- durchmesser des ersten Zahnrads 5 entspricht ungefähr einem Außendurchmesser des dritten Zahnrads 7. Ein Außendurchmesser des zweiten Zahnrads 6 ist etwa dreimal so groß wie ein Außendurchmesser des dritten Zahnrads 7. The torque input shaft 3 may be a transmission input shaft, a crankshaft or a disconnect clutch. The first gear 5, the second gear 6 and the third gear 7 each have an outer toothing. In this case, the external toothing of the third toothed wheel 7 meshes both with the external toothing of the first toothed wheel 5 and with the external toothing of the second toothed wheel 6. An outer diameter of the first toothed wheel 5 corresponds approximately to an outer diameter of the third toothed wheel 7. An outer diameter of the second toothed wheel 6 is about three times as large as an outer diameter of the third gear. 7
Die Verzahnung der Zahnräder 5, 6, 7 kann geradeverzahnt, schrägverzahnt, hoch- verzahnt oder schräghochverzahnt ausgebildet sein. The teeth of the gears 5, 6, 7 may be formed straight teeth, helical teeth, high-toothed or helical teeth.
Die E-Maschine 8 ist über einen Nebenkettentrieb 9 drehmomentübertragend mit ei- nem Klimakompressor 10 verbunden. The electric motor 8 is connected via a secondary chain drive 9 to transmit torque to an air-conditioning compressor 10.
Bezuqszeichenliste Hybridmodul Tag List Hybrid Module
Antriebsmaschine prime mover
Drehmomenteingangswelle Torque input shaft
Abtriebswelle output shaft
erstes Zahnrad first gear
zweites Zahnrad second gear
drittes Zahnrad third gear
E-Maschine E-machine
Nebenkettentrieb In addition to chain drive
Klimakompressor air compressor

Claims

Patentansprüche claims
1. Hybridmodul (1 ) für ein Kraftfahrzeug, mit einer Antriebsmaschine (2), die 1. hybrid module (1) for a motor vehicle, with a drive machine (2), the
drehmomentweitergebend mit einer Drehmomenteingangswelle (3) verbunden ist, wobei eine Abtriebswelle (4) der Antriebsmaschine (2) achsparallel zu der Drehmomenteingangswelle (3) angeordnet ist, dadurch gekennzeichnet, dass zumindest zwei miteinander in Verzahnungseingriff stehende Zahnräder (5, 6) zur Drehmomentübertragung zwischen der Abtriebswelle (4) und der Drehmo- menteingangswelle (3) mit der Abtriebswelle (4) und der Drehmomentein- gangswelle (3) verbunden sind.  Torque torque is further connected to a torque input shaft (3), wherein an output shaft (4) of the drive machine (2) is arranged axially parallel to the torque input shaft (3), characterized in that at least two toothed wheels (5, 6) meshing with each other for torque transmission between the output shaft (4) and the torque input shaft (3) with the output shaft (4) and the torque input shaft (3) are connected.
2. Hybridmodul (1 ) nach Anspruch 1 , dadurch gekennzeichnet, dass zumindest drei Zahnräder (5, 6, 7) zur Drehmomentübertragung vorhanden sind, von de- nen ein erstes Zahnrad (5) drehfest mit der Abtriebswelle (4) verbunden ist, ein zweites Zahnrad (6) drehfest mit der Drehmomenteingangswelle (3) verbunden ist und ein drittes Zahnrad (7) mit dem ersten Zahnrad (5) und dem zweiten Zahnrad (6) in Verzahnungseingriff steht. 2. hybrid module (1) according to claim 1, characterized in that at least three gears (5, 6, 7) are provided for torque transmission, of which a first gear (5) rotatably connected to the output shaft (4), a second gear (6) rotatably connected to the torque input shaft (3) and a third gear (7) with the first gear (5) and the second gear (6) is in meshing engagement.
3. Hybridmodul (1 ) nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Zahnräder (5, 6, 7) achsparallel zueinander angeordnet sind. 3. hybrid module (1) according to claim 1 or 2, characterized in that the gears (5, 6, 7) are arranged axially parallel to each other.
4. Hybridmodul (1 ) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Zahnräder (5, 6, 7) als außenverzahnte Stirnräder ausgebildet sind. 4. hybrid module (1) according to one of claims 1 to 3, characterized in that the toothed wheels (5, 6, 7) are designed as externally toothed spur gears.
5. Hybridmodul (1 ) nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass zwischen dem ersten Zahnrad (5) und dem dritten Zahnrad (7) und/oder zwischen dem zweiten Zahnrad (6) und dem dritten Zahnrad (7) eine Schräg- verzahnung ausgebildet ist. 5. hybrid module (1) according to one of claims 2 to 4, characterized in that between the first gear (5) and the third gear (7) and / or between the second gear (6) and the third gear (7) a Helical toothing is formed.
6. Hybridmodul (1 ) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass zwischen dem ersten Zahnrad (5) und dem dritten Zahnrad (7) und/oder zwischen dem zweiten Zahnrad (6) und dem dritten Zahnrad (7) eine Hochver- zahnung ausgebildet ist. 6. hybrid module (1) according to one of claims 2 to 5, characterized in that between the first gear (5) and the third gear (7) and / or between the second gear (6) and the third gear (7) is formed a Hoch- toothing.
7. Hybridmodul (1 ) nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass ein Übersetzungsverhältnis zwischen der Abtriebswelle (4) und der Dreh- momenteingangswelle (3) über das Verhältnis der Anzahl an Zähnen des ers- ten Zahnrads (5) zu der Anzahl an Zähnen des zweiten Zahnrads (6) einstellbar ist. 7. hybrid module (1) according to one of claims 2 to 6, characterized in that a transmission ratio between the output shaft (4) and the torque input shaft (3) on the ratio of the number of teeth of the first gear (5) the number of teeth of the second gear (6) is adjustable.
8. Hybridmodul (1 ) nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass ein Außendurchmesser des dritten Zahnrads (7) größer ist als ein Außen- durchmesser des ersten Zahnrads (5) und/oder des zweiten Zahnrads (6). 8. hybrid module (1) according to one of claims 2 to 7, characterized in that an outer diameter of the third gear (7) is greater than an outer diameter of the first gear (5) and / or the second gear (6).
9. Hybridmodul (1 ) nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, dass das erste Zahnrad (5), das zweite Zahnrad (6) und/oder das dritte Zahn- rad (7) durch ein Axiallager gelagert sind/ist. 9. hybrid module (1) according to one of claims 2 to 8, characterized in that the first gear (5), the second gear (6) and / or the third gear (7) are supported by a thrust bearing / is.
10. Hybridmodul (1 ) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass eine ungerade Anzahl von Zahnrädern (5, 6, 7) zur Drehmomentübertra- gung zwischen der Abtriebswelle (4) und der Drehmomenteingangswelle (3) angeordnet ist. 10. hybrid module (1) according to one of claims 1 to 9, characterized in that an odd number of gears (5, 6, 7) for torque transmission between the output shaft (4) and the torque input shaft (3) is arranged.
EP19707691.2A 2018-05-14 2019-02-12 Hybrid module having torque-transmitting gears Withdrawn EP3793851A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111410.9A DE102018111410A1 (en) 2018-05-14 2018-05-14 Hybrid module with torque transmitting gears
PCT/DE2019/100138 WO2019219110A1 (en) 2018-05-14 2019-02-12 Hybrid module having torque-transmitting gears

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EP3793851A1 true EP3793851A1 (en) 2021-03-24

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CN (1) CN112074428A (en)
DE (2) DE102018111410A1 (en)
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WO2019219110A1 (en) 2019-11-21
DE102018111410A1 (en) 2019-11-14
CN112074428A (en) 2020-12-11

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