DE102018126550A1 - Hydraulic transmission actuator - Google Patents
Hydraulic transmission actuator Download PDFInfo
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- DE102018126550A1 DE102018126550A1 DE102018126550.6A DE102018126550A DE102018126550A1 DE 102018126550 A1 DE102018126550 A1 DE 102018126550A1 DE 102018126550 A DE102018126550 A DE 102018126550A DE 102018126550 A1 DE102018126550 A1 DE 102018126550A1
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- transmission actuator
- hydraulic pump
- hydraulic transmission
- pump
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- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
- F16H61/0031—Supply of control fluid; Pumps therefore using auxiliary pumps, e.g. pump driven by a different power source than the engine
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0401—Valve members; Fluid interconnections therefor
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
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- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
- F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0807—Manifolds
- F15B13/0814—Monoblock manifolds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20561—Type of pump reversible
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20576—Systems with pumps with multiple pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
- F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/52—Pressure control characterised by the type of actuation
- F15B2211/526—Pressure control characterised by the type of actuation electrically or electronically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6309—Electronic controllers using input signals representing a pressure the pressure being a pressure source supply pressure
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/68—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings
- F16H61/684—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive
- F16H61/688—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for stepped gearings without interruption of drive with two inputs, e.g. selection of one of two torque-flow paths by clutches
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
Die Erfindung betrifft einen hydraulischen Getriebeaktuator (10) mit einem Trägerbauteil (12), einem daran angebrachten Vorratsbehälter (14) für Hydraulikfluid, einer am Trägerbauteil (12) angebrachten ersten Hydraulikpumpe (16) mit zwei Druckausgängen (38), denen jeweils ein Proportionalventil (44) zugeordnet ist, und einer ebenfalls am Trägerbauteil (12) angebrachten zweiten Hydraulikpumpe (18), die zwei Ausgänge (50) zur Versorgung von Stellzylindern eines Getriebes hat.The invention relates to a hydraulic transmission actuator (10) with a carrier component (12), a reservoir (14) for hydraulic fluid attached to it, a first hydraulic pump (16) attached to the carrier component (12) with two pressure outlets (38), each of which has a proportional valve ( 44) and a second hydraulic pump (18), which is also attached to the carrier component (12) and has two outputs (50) for supplying actuating cylinders of a transmission.
Description
Die Erfindung betrifft einen hydraulischen Getriebeaktuator, der zum Schalten von verschiedenen Bauteilen eines Schaltgetriebes geeignet ist, wie es in Kraftfahrzeugen verwendet wird.The invention relates to a hydraulic transmission actuator, which is suitable for shifting various components of a manual transmission, as is used in motor vehicles.
Aus dem Stand der Technik sind Doppelkupplungsgetriebe bekannt, die zwei Reibungskupplungen aufweisen, von denen eine den geraden Gängen und eine den ungeraden Gängen zugeordnet ist. Durch geeignetes Betätigen der beiden Reibungskupplungen kann ohne Zugkraftunterbrechung von einem Gang zum nächsten geschaltet werden.Double clutch transmissions are known from the prior art, which have two friction clutches, one of which is assigned to the even gears and one to the odd gears. By appropriately operating the two friction clutches, you can shift from one gear to the next without interrupting the tractive force.
Bei solchen Getrieben ist auch bekannt, dass hydraulische Stellzylinder dafür verwendet werden, die einzelnen Gänge in der gewünschten Weise zu schalten, also das Losrad eines Zahnradpaares, das eine Übersetzungsstufe bildet, drehfest mit der Antriebswelle zu verbinden bzw. diese Verbindung wieder zu lösen.In the case of such transmissions, it is also known that hydraulic actuating cylinders are used to shift the individual gears in the desired manner, that is to connect the idler gear of a gearwheel pair, which forms a gear ratio step, to the drive shaft in a rotationally fixed manner or to release this connection again.
Für die Betätigung der beiden Reibungskupplungen wird im Stand der Technik üblicherweise ein Kupplungsaktuator verwendet, der als wesentliches Bauteil eine Hydraulikpumpe und mindestens zwei Proportionalventile aufweist, mittels denen gesteuert oder geregelt ein gewünschter Hydraulikdruck bereitgestellt werden kann. Zur Betätigung der Stellzylinder kann ein geschlossener Hydraulikkreis verwendet werden, in welchem eine Pumpe angeordnet ist. Abhängig von der Drehrichtung der Pumpe wird ein bestimmter Stellzylinder in der einen oder der anderen Richtung betätigt.In the prior art, a clutch actuator is usually used to actuate the two friction clutches, the main component of which comprises a hydraulic pump and at least two proportional valves, by means of which a desired hydraulic pressure can be provided in a controlled or regulated manner. A closed hydraulic circuit in which a pump is arranged can be used to actuate the actuating cylinders. Depending on the direction of rotation of the pump, a certain actuating cylinder is actuated in one direction or the other.
Die Aufgabe der Erfindung besteht darin, den Aufwand für die Bereitstellung des Hydraulikdrucks bzw. -stroms für die verschiedenen Bauteile zu verringern.The object of the invention is to reduce the effort required to provide the hydraulic pressure or flow for the various components.
Zur Lösung dieser Aufgabe ist erfindungsgemäß ein hydraulischer Getriebeaktuator vorgesehen mit einem Trägerbauteil, einem daran angebrachten Vorratsbehälter für Hydraulikfluid, einer am Trägerbauteil angebrachten Kupplungs-Hydraulikpumpe mit zwei Druckausgängen, denen jeweils ein Proportionalventil zugeordnet ist, und einer ebenfalls am Trägerbauteil angebrachten Schalt-Hydraulikpumpe, die zwei Ausgänge zur Versorgung von Stellzylindern eines Getriebes hat. Die Erfindung beruht auf dem Grundgedanken, die beiden unterschiedlichen Pumpen durch Anbringung an dem Trägerbauteil zu einem Aktuator zusammenzufassen, sodass sie sich einen Vorratsbehälter teilen können und insgesamt ein sehr kompakter Aufbau erzielt wird.To achieve this object, a hydraulic transmission actuator is provided according to the invention with a carrier component, a reservoir for hydraulic fluid attached to it, a clutch hydraulic pump attached to the carrier component with two pressure outlets, each of which a proportional valve is assigned, and a switching hydraulic pump also attached to the carrier component has two outputs for supplying actuating cylinders of a transmission. The invention is based on the basic idea of combining the two different pumps to form an actuator by attachment to the carrier component, so that they can share a storage container and overall a very compact construction is achieved.
Gemäß einer Ausgestaltung der Erfindung ist vorgesehen, dass die beiden Druckausgänge der Kupplungs-Hydraulikpumpe zueinander symmetrisch sind. „Zueinander symmetrisch“ bedeutet hierbei, dass sie dahingehend identisch ausgelegt sind, dass sie beim Betrieb der Pumpe mit demselben Hydraulikstrom versorgt werden. Dadurch können die beiden Reibungskupplungen eines Doppelkupplungsgetriebes mittels derselben Hydraulikpumpe und den beiden Proportionalventilen unabhängig voneinander betätigt werden.According to one embodiment of the invention, it is provided that the two pressure outputs of the clutch hydraulic pump are symmetrical to one another. “Symmetrical to each other” here means that they are designed identically so that they are supplied with the same hydraulic current when the pump is operating. As a result, the two friction clutches of a double clutch transmission can be actuated independently of one another by means of the same hydraulic pump and the two proportional valves.
Gemäß einer Ausgestaltung der Erfindung ist vorgesehen, dass die beiden Proportionalventile im Vorratsbehälter angeordnet sind. Dies ermöglicht es, sie durch das Hydraulikfluid zu kühlen, das sich im Vorratsbehälter befindet.According to one embodiment of the invention, it is provided that the two proportional valves are arranged in the storage container. This allows them to be cooled by the hydraulic fluid that is in the reservoir.
Vorzugsweise sind dabei die Proportionalventile von Hydraulikfluid umspült, sodass sich ein sehr gut reproduzierbares Dämpfungsverhalten für den Magnetkern ergibt.The proportional valves are preferably flushed with hydraulic fluid, so that the damping behavior for the magnetic core is very reproducible.
Gemäß einer Ausgestaltung der Erfindung ist vorgesehen, dass zwischen einem Druckausgang und einem Proportionalventil ein Rückschlagventil angeordnet ist. Das Rückschlagventil ermöglicht es, einen an einem Druckanschluss des Getriebeaktuators aufgebauten Hydraulikdruck auch dann aufrecht zu erhalten, wenn die Kupplungs-Hydraulikpumpe abgeschaltet ist.According to an embodiment of the invention it is provided that a check valve is arranged between a pressure outlet and a proportional valve. The check valve makes it possible to maintain a hydraulic pressure built up at a pressure connection of the transmission actuator even when the clutch hydraulic pump is switched off.
Die Kupplungs-Hydraulikpumpe saugt aus dem Vorratsbehälter an, wobei der Ausgang der Proportionalventile unmittelbar zum Vorratsbehälter zurückführt. Hierdurch ergibt sich ein kompakter Aufbau.The clutch hydraulic pump sucks from the reservoir, with the output of the proportional valves leading directly back to the reservoir. This results in a compact structure.
Gemäß einer bevorzugten Ausführungsform der Erfindung ist die Kupplungs-Hydraulikpumpe eine Rollenzellenpumpe. Sie zeichnet sich durch eine hohe Lebensdauer bei hoher Zuverlässigkeit und durch eine gute Förderleistung aus.According to a preferred embodiment of the invention, the clutch hydraulic pump is a roller cell pump. It is characterized by a long service life with high reliability and a good delivery rate.
Erfindungsgemäß kann zwischen jedem Ausgang der Schalt-Hydraulikpumpe und einem Versorgungsanschluss für die Stellzylinder ein Nachsauganschluss vorgesehen sein, der mit dem Vorratsbehälter in Verbindung steht und ein Rückschlagventil aufweist. Über den Nachsauganschluss kann der von der Schalt-Hydraulikpumpe in der einen oder anderen Richtung unter Druck gesetzte Hydraulikkreis jeweils Hydraulikfluid nachsaugen, sobald der Druck auf der jeweiligen Saugseite unterhalb eines bestimmten Wertes liegt. Somit wird eine eventuelle Leckage unmittelbar ausgeglichen.According to the invention, a suction connection can be provided between each outlet of the switching hydraulic pump and a supply connection for the actuating cylinder, said suction connection being connected to the storage container and having a check valve. The hydraulic circuit pressurized by the switching hydraulic pump in one direction or the other can suck in hydraulic fluid via the suction connection as soon as the pressure on the respective suction side is below a certain value. Any leakage is thus immediately compensated for.
Gemäß einer alternativen Ausgestaltung der Erfindung ist vorgesehen, dass an einem Ausgang der Schalt-Hydraulikpumpe ein Versorgungsanschluss für eine weitere Kupplung angeschlossen ist. Bei der weiteren Kupplung kann es sich um eine Kupplung handeln, mit der beispielsweise der Verbrennungsmotor eines Hybridantriebs vom Getriebe abgekoppelt und wieder zugeschaltet werden kann. Diese Kupplung kann dann ohne großen Zusatzaufwand mittels des erfindungsgemäßen Getriebeaktuators betätigt werden.According to an alternative embodiment of the invention, it is provided that a supply connection for a further clutch is connected to an output of the switching hydraulic pump. The further clutch can be a clutch with which, for example, the Combustion engine of a hybrid drive can be uncoupled from the transmission and switched on again. This clutch can then be actuated by means of the transmission actuator according to the invention without great additional effort.
Vorzugsweise ist dabei vorgesehen, dass zwischen dem Ausgang und dem Versorgungsanschluss ein Schaltventil, ein Rückschlagventil und ein Proportionalventil angeordnet sind. Mit dem Schaltventil kann der Versorgungsanschluss für die weitere Kupplung vom Kreis der Schalt-Hydraulikpumpe isoliert werden, sodass bei Betätigung der Stellzylinder die Kupplung nicht ungewollt mit Druck beaufschlagt wird. Schaltventil und Rückschlagventil können auch zu einem Bauteil zusammengefasst werden. Um den Versorgungsanschluss für die weitere Pumpe in Betrieb zu nehmen, wird das Schaltventil in eine durchgängige Position geschaltet, sodass dann der von der Schalt-Hydraulikpumpe erzeugte Druck mittels des Proportionalventils gesteuert bzw. geregelt werden kann.It is preferably provided that a switching valve, a check valve and a proportional valve are arranged between the outlet and the supply connection. With the switching valve, the supply connection for the further clutch can be isolated from the circuit of the switching hydraulic pump, so that when the actuating cylinder is actuated, the clutch is not inadvertently pressurized. The switching valve and check valve can also be combined into one component. In order to put the supply connection for the additional pump into operation, the switching valve is switched into a continuous position, so that the pressure generated by the switching hydraulic pump can then be controlled or regulated by means of the proportional valve.
Die Erfindung wird nachfolgend anhand zweier Ausführungsformen beschrieben, die in den beigefügten Zeichnungen dargestellt sind. In diesen zeigen:
- -
1 in einer perspektivischen Ansicht einen erfindungsgemäßen Getriebeaktuator; - -
2 eine Draufsicht auf den Getriebeaktuator von1 ; - -
3 eine Seitenansicht des Getriebeaktuators von1 ; - -
4 einen Schnitt entlang der EbeneIV-IV von2 ; - -
5 einen hydraulischen Schaltplan des Getriebeaktuators der1 bis4 ; und - -
6 einen hydraulischen Schaltplan eines Getriebeaktuators gemäß einer zweiten Ausführungsform.
- -
1 in a perspective view a gear actuator according to the invention; - -
2nd a plan view of the transmission actuator of1 ; - -
3rd a side view of the transmission actuator of1 ; - -
4th a cut along the planeIV-IV from2nd ; - -
5 a hydraulic circuit diagram of thetransmission actuator 1 to4th ; and - -
6 a hydraulic circuit diagram of a transmission actuator according to a second embodiment.
In den
Auf der zum Vorratsbehälter entgegengesetzten Seite sind eine erste und eine zweite Hydraulikpumpe am Trägerbauteil angebracht, die zur besseren Unterscheidung nachfolgend als Kupplungs-Hydraulikpumpe
Die Kupplungs-Hydraulikpumpe
Die Schalt-Hydraulikpumpe ist in einem Fluidkreis angeordnet, der zwei Anschlüsse
Die Kupplungs-Hydraulikpumpe ist eine Rollenzellenpumpe und weist einen Elektromotor
Die Druckausgänge
Zwischen den Druckausgängen
Ein besonderes Merkmal der Proportionalventile
Die Schalt-Hydraulikpumpe
Zwischen jedem Ausgang
Mit dem beschriebenen Getriebeaktuator können gleichzeitig über die Druckanschlüsse
In
Der Unterschied zwischen der ersten und der zweiten Ausführungsform besteht darin, dass bei der zweiten Ausführungsform zusätzlich ein Versorgungsanschluss
Das weitere Stellglied kann eine Parkbremse sein. Es ist auch möglich, dass das weitere Stellglied eine weitere Kupplung ist. Die weitere Kupplung kann beispielsweise dafür verwendet werden, einen Verbrennungsmotor eines Hybridantriebs vom Getriebe zu trennen bzw. wieder zuzuschalten. Ungeachtet der Tatsache, dass die zweite Hydraulikpumpe
Der Versorgungsanschluss
Das Schaltventil
Wenn der Versorgungsanschluss
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturPatent literature cited
- DE 102013000157 B3 [0020]DE 102013000157 B3 [0020]
Claims (11)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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DE102018126550.6A DE102018126550B4 (en) | 2018-10-24 | 2018-10-24 | Hydraulic transmission actuator |
CN201910957287.XA CN111089163B (en) | 2018-10-24 | 2019-10-10 | Hydraulic gearbox actuator |
KR1020190128235A KR20200047337A (en) | 2018-10-24 | 2019-10-16 | Hydraulic gearbox actuator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018126550.6A DE102018126550B4 (en) | 2018-10-24 | 2018-10-24 | Hydraulic transmission actuator |
Publications (2)
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DE102018126550A1 true DE102018126550A1 (en) | 2020-04-30 |
DE102018126550B4 DE102018126550B4 (en) | 2024-02-29 |
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DE102018126550.6A Active DE102018126550B4 (en) | 2018-10-24 | 2018-10-24 | Hydraulic transmission actuator |
Country Status (3)
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KR (1) | KR20200047337A (en) |
CN (1) | CN111089163B (en) |
DE (1) | DE102018126550B4 (en) |
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Also Published As
Publication number | Publication date |
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KR20200047337A (en) | 2020-05-07 |
DE102018126550B4 (en) | 2024-02-29 |
CN111089163B (en) | 2023-01-17 |
CN111089163A (en) | 2020-05-01 |
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