WO2011111496A1 - 自動変速機の制御装置 - Google Patents
自動変速機の制御装置 Download PDFInfo
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- WO2011111496A1 WO2011111496A1 PCT/JP2011/053395 JP2011053395W WO2011111496A1 WO 2011111496 A1 WO2011111496 A1 WO 2011111496A1 JP 2011053395 W JP2011053395 W JP 2011053395W WO 2011111496 A1 WO2011111496 A1 WO 2011111496A1
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- Prior art keywords
- shift
- clutch
- speed
- gear
- automatic transmission
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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
- F16H61/14—Control of torque converter lock-up clutches
- F16H61/143—Control of torque converter lock-up clutches using electric control means
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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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/006—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion power being selectively transmitted by either one of the parallel flow paths
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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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- 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
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
- F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
- F16H3/087—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears
- F16H3/093—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts
- F16H2003/0931—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts characterised by the disposition of the gears with two or more countershafts each countershaft having an output gear meshing with a single common gear on the output shaft
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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
- F16H61/14—Control of torque converter lock-up clutches
- F16H61/143—Control of torque converter lock-up clutches using electric control means
- F16H2061/145—Control of torque converter lock-up clutches using electric control means for controlling slip, e.g. approaching target slip value
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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
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/0056—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising seven forward speeds
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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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H59/20—Kickdown
Definitions
- the present invention relates to a control device for an automatic transmission, and more specifically to a shift control device for a twin clutch type automatic transmission.
- a twin clutch type automatic transmission is usually arranged between two input shafts connected to the drive shaft of the prime mover, and connects between the drive shaft and the input shaft, and between the two input shafts and the output shaft. And a gear selection mechanism that can couple any one of the plurality of shift gears to any one of the two output shafts.
- Patent Document 1 the technique described in Patent Document 1 below can be cited.
- the target shift stage is connected to the output shaft via the gear selection mechanism and the clutch.
- the gear selection mechanism of the power transmission path on the side where the target gear position is arranged (so-called pre-shifting)
- the responsiveness of the shift is improved.
- Patent Document 1 it is configured to increase the responsiveness of the shift by operating the gear selection mechanism on the side where the target shift stage is disposed before engaging the clutch.
- a kick down shift power down shift
- the response particularly the acceleration response
- An object of the present invention is to solve the above-described problems, and to provide a driving force transmission path composed of an output shaft connected to an input shaft via a clutch and a shift gear arranged to be selectable via a gear selection mechanism. It is an object of the present invention to provide a control device for an automatic transmission in which a twin-clutch type automatic transmission is provided, wherein a shift pattern required by a driver is determined and shift control is performed accordingly.
- a driving force is input from a driving shaft of a prime mover mounted on a vehicle via a fluid coupling incorporating a lock-up clutch.
- the control device for the automatic transmission that changes the speed, at least two input shafts connected to the drive shaft of the prime mover, at least two output shafts, and between the drive shaft and at least two input shafts.
- Each of the at least two output shafts may be any one of the plurality of shift gears disposed between the at least two input shafts and the output shaft, and the clutch that is respectively disposed to connect and disconnect the drive shaft and the input shaft.
- a gear selection mechanism that can be coupled to each other, a fluid pressure supply mechanism capable of supplying fluid pressure to the lockup clutch, the clutch, and the gear selection mechanism, Shift pattern determining means for determining whether the shift requested by the user is the first shift pattern or the second shift pattern; and when determining that the shift is the first shift pattern, the lockup clutch is engaged.
- fluid pressure is supplied to the gear selection mechanism and the clutch of the driving force transmission path on the side where the target shift gear is arranged, among the at least two driving force transmission paths, while the second shift speed is changed.
- the fluid pressure is supplied to the gear selection mechanism and the clutch of the driving force transmission path on the side where the target shift gear is arranged while releasing the lock-up clutch.
- a control means for controlling the operation of the fluid pressure supply mechanism.
- the present invention is configured such that the second shift pattern is a kick-down shift.
- the control means is requested by the driver when it is determined that the second shift pattern is present. It is determined whether or not the required torque is greater than a threshold value, and when it is determined that the required torque is greater than the threshold value, the lockup clutch is opened.
- the present invention when the control means determines that the required torque is not greater than the threshold value, the present invention provides the control device for the automatic transmission.
- a target slip amount of the torque converter is calculated based on the torque, and the lockup clutch is opened so as to be the calculated target slip amount.
- the control means when it is determined that the control means is in the second shift pattern, the control means is provided on the input shaft. A request torque is calculated, a target slip amount of the torque converter is calculated based on the calculated request torque, and the lockup clutch is opened so as to be the calculated target slip amount.
- At least two input shafts connected to the drive shaft of the prime mover, at least two output shafts, the drive shaft, and at least two input shafts. Any one of at least two output shafts, each of which is arranged between a clutch for connecting / disconnecting the drive shaft and the input shaft and a plurality of shift gears disposed between at least two input shafts and the output shaft And a fluid pressure supply mechanism capable of supplying fluid pressure to the lock-up clutch, the clutch, and the gear selection mechanism. It is determined whether the requested shift is the first shift pattern or the second shift pattern. When it is determined that the requested shift is the first shift pattern, at least two driving force transmissions are performed while the lockup clutch is engaged.
- the fluid pressure supply mechanism is configured to supply fluid pressure to the gear selection mechanism and the clutch on the driving force transmission path on the side where the target gear stage is disposed. Since the operation is controlled, when the first shift pattern is a normal shift, the gear selection mechanism on the side where the target shift stage is arranged is operated before engaging the clutch. Responsiveness can be improved, and energy loss can be suppressed to a minimum by engaging the lock-up clutch and performing shift control.
- the gear selection mechanism is operated before the clutch is engaged in the same manner.
- the acceleration response required by the driver can be realized by amplifying the fluid coupling such as a torque converter by performing the shift control by releasing the lock-up clutch.
- the second shift pattern is configured to be the kick-down shift, the above-described effect can be reliably obtained in the kick-down shift (or the power-down shift). Can do.
- the target slip amount of the torque converter is calculated based on the required torque, Since the lock-up clutch is configured to be released so as to achieve the target slip amount, the acceleration response required by the driver can be more reliably realized within the torque range required by the engine.
- the slip amount of the torque converter indicates the difference [rpm] between the rotational speed of the prime mover and the input speed of the automatic transmission, specifically, the rotational speed of the prime mover minus the input rotational speed of the automatic transmission.
- the “target slip amount” is the target slip amount and the target slip ratio because the ratio of the input speed / motor speed [%] is substantially equivalent to the case of the slip amount. Used to indicate one of the following.
- FIG. 1 is a schematic diagram showing an entire automatic transmission control apparatus according to a first embodiment of the present invention. It is explanatory drawing which shows transmission of the driving force from the input shaft shown in FIG. 2 is a table showing operation patterns of the first and second clutches CL1 and CL2 shown in FIG.
- FIG. 2 is a hydraulic circuit diagram showing in detail the hydraulic pressure supply mechanism shown in FIG. 1. It is a flowchart which shows operation
- FIG. 6 is a sub-routine flowchart showing a lock-up clutch releasing process in the flowchart of FIG. 5.
- FIG. 6 is an explanatory diagram showing characteristics of a map used for calculating a target slip amount of the torque converter in the flow chart of FIG.
- FIG. 9 is a sub-routine flow chart showing a lock-up clutch release process similar to FIG. 6, showing the operation of the automatic transmission control apparatus according to the second embodiment of the present invention; It is explanatory drawing which shows the characteristic of the map used for calculation of the request
- FIG. 1 is a schematic diagram generally showing a control device for an automatic transmission according to a first embodiment of the present invention
- FIG. 2 is an explanatory diagram showing transmission of driving force from an input shaft shown in FIG.
- the symbol T indicates an automatic transmission.
- the automatic transmission T is mounted on a vehicle (not shown) and is of a twin clutch type having seven forward speeds and one reverse speed.
- the automatic transmission T includes a main input shaft (main coupling) connected to a drive shaft 10 connected to a crankshaft of an engine (internal combustion engine (prime mover)) E via a torque converter (fluid coupling) 12 having a lock-up clutch LC. Shaft MS) 16.
- a first sub input shaft 20 and a second sub input shaft 22 are arranged on the outer periphery of the main input shaft 16 so as to be coaxial and relatively rotatable.
- the main input shaft 16 and the first sub input shaft 20 are connected via the first clutch CL1, and the main input shaft 16 and the second sub input shaft 22 are also connected via the second clutch CL2.
- the first and second clutches CL1 and CL2 are both wet multi-plate clutches.
- a first output shaft (counter shaft) 24 and a second output shaft (counter shaft) 26 are arranged in parallel with the main input shaft 16 and the first and second sub input shafts 20 and 22.
- a first speed drive gear 30, a third speed-5th speed drive gear 32, and a seventh speed drive gear 34 are fixed to the first sub input shaft 20, and a second speed-RVS (reverse drive) is fixed to the second sub input shaft 22. )
- the drive gear 36 and the 4th-6th drive gear 40 are fixed.
- the first output shaft 24 meshes with a first speed driven gear 42 meshed with the first speed drive gear 30, a third speed driven gear 44 meshed with the third speed-5th speed drive gear 32, and a fourth speed-6th speed drive gear 40.
- the four-speed driven gear 46 and the RVS driven gear 50 are rotatably supported.
- the 1st speed driven gear 42 and the 3rd speed driven gear 44 can be selectively coupled to the first output shaft 24 via the 1st speed-3rd speed sync device S1, and the 4th speed driven gear 46 and the RVS driven gear 50 are 4th speed-RVS synchro devices. It can be selectively coupled to the first output shaft 24 via S2.
- the second output shaft 26 includes a 5-speed driven gear 52 meshed with the 3-speed-5-speed drive gear 32, a 7-speed driven gear 54 meshed with the 7-speed drive gear 34, a 2-speed-RVS drive gear 36, and an RVS driven gear 50.
- a meshing 2-speed driven gear 56 and a 6-speed driven gear 60 meshing with the 4-speed-6-speed drive gear 40 are rotatably supported.
- the 5-speed driven gear 52 and the 7-speed driven gear 54 can be selectively coupled to the second output shaft 26 via the 5-speed-7-speed synchronizer S3, and the 2-speed driven gear 56 and the 6-speed driven gear 60 are 2-speed-6-speed. It can be selectively coupled to the second output shaft 26 via the synchronizer S4.
- a drive shaft 70 is coupled to both sides of the differential mechanism Diff, and a wheel W is connected to the tip thereof.
- the first and second auxiliary input shafts 20 and 22 arranged coaxially around the main input shaft 16 are connected to the first and second output shafts 24 and 26, respectively.
- the output shafts 24 and 26 are connected to the differential mechanism Diff. More specifically, the final drive gears 62 and 64 of the first and second output shafts 24 and 26 are configured to mesh with the final driven gear 66 of the differential mechanism Diff. .
- the automatic transmission T is disposed between the drive shaft 10 of the engine E and the first and second auxiliary input shafts 20 and 22, respectively, so that the drive shaft 10 and the first and second auxiliary input shafts 20 and 22 are disposed.
- 7 is arranged between the first and second clutches CL1 and CL2 for connecting and disconnecting (opening / engaging), the first and second auxiliary input shafts 20 and 22, and the first and second output shafts 24 and 26.
- First and second driving force transmission paths DP1 and DP2 constituted by synchronizers S1 to S4 capable of coupling any of the gears up to the speed to any of the first and second output shafts 24 and 26. Is provided.
- the first driving force transmission path DP1 is composed of the first clutch CL1, the odd-numbered shift stages and the synchronizers S1 and S3, and the second driving force transmission path DP2 is composed of the second clutch CL2, the even-numbered speed stages and the synchronizing apparatuses S2 and S4. Consists of.
- Synchronizers S1 to S4 correspond to the gear selection mechanism described above.
- the automatic transmission T is provided with a hydraulic pressure supply mechanism 74 that can supply hydraulic pressure (fluid pressure) to the lockup clutch LC, the clutch CLn, and the synchronizer Sn.
- a hydraulic pressure supply mechanism 74 can supply hydraulic pressure (fluid pressure) to the lockup clutch LC, the clutch CLn, and the synchronizer Sn.
- the synchronizers S1 to S4 include a known sleeve dog clutch and a synchronization mechanism (consisting of a coupling sleeve and a synchronizer ring, etc.) fixed to the first and second output shafts 24 and 26 by spline coupling.
- the sleeve dog clutch is configured to be movable in the axial direction.
- the hydraulic pressure is supplied from the hydraulic pressure supply mechanism 74, the sleeve dog clutch moves to engage with the dog clutch of the adjacent driven gear, and the driven gear is coupled to the output shaft 24 or 26.
- the hydraulic pressure is supplied to the first-speed / third-speed synchronizer S1 and moved rightward in FIG. 1 to connect the first-speed driven gear 42 to the first output shaft 24, and the hydraulic pressure is supplied to the first clutch CL1.
- the first gear is established.
- FIG. 3 shows operation patterns of the first and second clutches CL1, CL2, and the like.
- a circle indicates that the clutch is engaged.
- the second speed shift is performed while the hydraulic pressure is supplied to the first clutch CL1 of the first power transmission path DP1 and the first speed shift stage is established. Hydraulic pressure is supplied to the second-speed to sixth-speed synchronizer S4 of the second power transmission path DP2 on the side where the stage is disposed, and the second-speed driven gear 56 is coupled to the second output shaft 26 by moving to the right.
- the first power transmission path DP1 on the side where the next third speed shift stage is arranged is arranged. Hydraulic pressure is supplied to the first-speed / third-speed synchronizer S1 to move left, and the third-speed driven gear 44 is coupled to the first output shaft 24.
- the 6th speed stage is arranged while the 7th speed stage is established while the hydraulic pressure is supplied to the first clutch CL1 of the first power transmission path DP1.
- the hydraulic pressure is supplied to the second-speed to sixth-speed synchronizer S4 of the second power transmission path DP2 on the side to be moved to the left to couple the sixth-speed driven gear 60 to the second output shaft 26.
- the driving force is not interrupted, that is, the shift-up shift and the shift-down shift with excellent responsiveness are possible.
- hydraulic pressure is supplied to the synchronizing device Sn corresponding to the driven gear of the next shift stage (target shift stage) as described above, and the driven gear is coupled to the corresponding first output shaft 24 (or second output shaft 26). This operation is hereinafter referred to as “pre-shift”.
- the synchronizers S1 to S4 include a 1-speed-3 speed hydraulic actuator A1, a 4-speed-RVS hydraulic actuator A2, a 5-speed-7-speed hydraulic actuator A3, and a 2-speed-6 corresponding thereto.
- a fast hydraulic actuator A4 is provided.
- the first-speed to third-speed actuator A1 is a first-speed piston PS1 and a third-speed piston PS3 arranged opposite to each other
- the fourth-speed-RVS hydraulic actuator A2 is a fifth-speed to seventh-speed
- the hydraulic actuator A3 includes a 5-speed piston PS5 and a 7-speed piston PS7 that are disposed to face each other
- a 2-speed-6-speed hydraulic actuator A4 includes a 2-speed piston PS2 and a 6-speed piston PS6 that are disposed to face each other.
- pistons PS1 and the like are integrally provided with shift forks SF1 to SF4, and are connected to the sleeve dog clutch of the synchronizer Sn via the shift fork SFn.
- the hydraulic oil ATF pumped up from the reservoir 76 via the strainer 80 by the oil pump 82 is regulated to a line pressure by a regulator valve 86 controlled by a linear solenoid valve 84.
- An accumulator 90 is connected for compensation when the line pressure decreases.
- the line pressure is regulated by the linear solenoid valves LS1 and LS2, and is supplied via the 3A shift valve VA3A, 3B shift valve VA3B, 4th shift valve VA4, 5th shift valve VA5 and 6th shift valve VA6.
- the first to fourth hydraulic actuators An are supplied to move the sleeve dog clutch of the corresponding synchronizer Sn from the neutral position to the left and right engagement positions (right movement or left movement).
- a detent (not shown) is provided at a position corresponding to the neutral position and the left and right engagement positions.
- the synchronizer Sn is configured to be held in a detent when in the neutral position, and no hydraulic pressure is required.
- the clutch control oil passage exiting from the first shift valve VA1 passes through the manual valve 92 and is connected to the first clutch CL1, and the clutch control oil passage exiting from the second shift valve VA2 is similarly manual.
- the valve 92 is connected to the second clutch CL2.
- the manual valve 92 is connected to a shift lever (not shown) arranged near the floor of the driver's seat, and the spool moves in accordance with the P, R, N, D, and L ranges selected by the driver. To do.
- the first and second clutches CL1 and CL2 are supplied with hydraulic pressure, and the drive shaft 10 of the engine E in FIG. , 22 to transmit the driving force of the engine E to the first and second driving force transmission paths DP1, DP2.
- the lockup clutch LC will be described.
- the line pressure is the back pressure of the lockup clutch LC of the torque converter 12 via the LC shift valve 94 operated by the LC solenoid valve SHLC and the LC control valve 100 controlled by the linear solenoid valve 96. It is supplied to the chamber LCa (or back pressure chamber LCa and internal pressure chamber LCb).
- the degree of engagement of the lock-up clutch LC that is, the degree between engagement and release, in other words, the slip amount of the torque converter 12 is adjusted by duty-controlling the excitation of the linear solenoid valve 96. It is determined by the hydraulic pressure supplied to the motor.
- the linear solenoid valve 96 As described above, in the hydraulic pressure supply mechanism 74 shown in FIG. 4, the linear solenoid valve 96, the LC solenoid valve SHLC, the linear solenoid valves LS1 and LS2, and the shift solenoid valves SH1, SH2, provided corresponding to the shift valve VAn. Excitation / demagnetization of SH3A and SH4A controls the engagement / release of the lockup clutch LC, the operation (disconnection / disconnection) of the first and second clutches CL1 and CL2, and the operation of the synchronizer Sn.
- the automatic transmission T includes a shift controller 110.
- the shift controller 110 is configured as an electronic control unit (ECU) including a microcomputer.
- ECU electronice control unit
- the engine E is a spark ignition type internal combustion engine using gasoline as a fuel, for example, and an engine controller 112 including an electronic control unit similarly equipped with a microcomputer is provided for controlling the operation.
- engine E the mechanical connection between the accelerator pedal and the throttle valve is cut off, and a DBW (Drive-by-Wire) mechanism is provided.
- the engine controller 112 calculates the required torque PMCMD required by the engine E from the accelerator opening (AP opening) and the engine speed NE, and calculates the fuel injection amount and the ignition timing from the calculated required torque PMCMD and the engine speed NE. Control.
- the calculation of the required torque PMCMD is not limited to the above, and may be calculated in any way.
- the shift controller 110 is configured to be communicable with the engine controller 112, and acquires information such as the engine speed NE, the AP opening, and the required torque PMCMD from the engine controller 112.
- a first rotational speed sensor 114 is disposed in the vicinity of the main input shaft 16 and outputs a signal indicating the input rotational speed NM of the automatic transmission T, and the first and second auxiliary input shafts 20 and 22 Second, third, and fourth rotation speed sensors 116, 120, and 122 are disposed on the first output shaft 24, respectively, and output signals indicating their rotation speeds.
- a fifth rotational speed sensor 124 is disposed in the vicinity of the final driven gear 66, and outputs a signal indicating the rotational speed of the final driven gear 66, in other words, the vehicle speed V.
- a temperature sensor 126 is disposed inside the reservoir 76 of the hydraulic pressure supply mechanism 74 and outputs a signal indicating the temperature (oil temperature) TATF of the hydraulic oil ATF, and the actuators A1 to A4 are respectively opposed to the pistons disposed opposite to each other. In the vicinity, stroke sensors (displacement sensors) SE1 to SE4 are arranged, and a signal indicating the stroke (displacement) of the piston is output.
- a manual shift switch (switch) 130 is arranged near the shift lever, and outputs a shift signal indicating upshift or downshift when operated by the driver.
- the outputs of these sensors are also input to the shift controller 110.
- the shift controller 110 controls the operation of the hydraulic pressure supply mechanism 74 by exciting and demagnetizing the linear solenoid valve 96 and the like described above by performing the control described below based on the outputs of these sensors and information from the engine controller 112.
- FIG. 5 is a flowchart showing the operation of the shift controller 110, that is, the operation of the control device for the automatic transmission T according to this embodiment.
- the shift map is searched from the vehicle speed V and the throttle opening TH, and the target shift speed is determined in consideration of the information about the AP opening, the manual shift SW (switch), and the current shift speed.
- the current gear position is determined from the operation of the synchronizer Sn or the like.
- the current gear is established.
- the first output shaft corresponding to the driven gear of the target gear stage is operated by supplying hydraulic pressure by exciting and demagnetizing the shift solenoid corresponding to the synchronizer Sn of the other power transmission path on the side where the target gear stage is arranged. 24 or the second output shaft 26.
- FIG. 6 is a sub-routine flow chart showing the processing.
- this processing means determining whether or not the required torque requested by the driver is larger than the threshold value. The same applies when a KDSW is provided and activated.
- the program proceeds to S104, and the target TC slip amount, that is, the target slip amount of the torque converter 12 is calculated. This is calculated by searching the required torque PMCMD and searching for a target TC slip amount by searching a map showing the characteristic in FIG.
- the target TC slip amount is defined by engine speed NE ⁇ input speed NM [rpm]. As shown in the figure, the map is set for each shift speed (target shift speed). When driven from the wheel side, the target TC slip amount is set to exceed 0 on the negative value side.
- the slip amount of the torque converter 12 is substantially equivalent to the slip ratio, that is, the ratio [%] of the input rotational speed NM / engine rotational speed NE. May be a “target slip rate”.
- the magnitude of the hydraulic pressure supplied to the back pressure chamber LCa is adjusted by controlling the excitation of the linear solenoid valve 96 so that the calculated target TC slip amount is obtained.
- first shift pattern the shift by the process that is denied in S12 and proceeds from S14 to S24 is referred to as "first shift pattern".
- first shift pattern the responsiveness of the shift can be improved by engaging CLn after the preshift is completed, and the torque converter 12 slips because the lockup clutch LC is completely engaged. Energy loss due to can be minimized.
- the shift by the process that is affirmed in S12, proceeds to S26, and then proceeds from S20 to S24 is referred to as a “second shift pattern”.
- the response of the shift can be improved by engaging CLn after the pre-shift is completed, and the lock-up clutch LC is released, so that the torque converter (fluid coupling)
- the acceleration response required by the driver can be realized by the 12 amplifying actions.
- FIG. 8 is a sub-routine flowchart showing the release process of the lockup clutch LC at the time of KD shift, similar to FIG. 6, showing the second embodiment of the control device for the automatic transmission according to the present invention.
- the vehicle body speed V and the AP opening are searched for a map showing its characteristics in FIG.
- the required vehicle body acceleration is indicated by 0 to 1.0 G (G: gravitational acceleration) and is set for each accelerator opening (AP opening).
- the calculated required vehicle acceleration is multiplied by the vehicle weight (fixed value), and the calculated driving resistance is added to the product to calculate the required driving force.
- the calculated required turbine shaft torque is divided by the engine torque (calculated from the rotational speed NE of the engine E and the intake pipe absolute pressure PBA) to calculate the target torque ratio.
- a target TC slip amount is calculated by searching a table showing the characteristics in FIG. 10 from the calculated target torque ratio, and then the process proceeds to S210, where the linear solenoid is set so as to be the calculated target TC slip amount.
- the magnitude of the hydraulic pressure supplied to the back pressure chamber LCa is adjusted by duty controlling the excitation of the valve 96.
- the responsiveness of the shift can be improved, and the slip amount of the torque converter 12 is calculated more precisely, so that the torque converter 12 It is possible to more appropriately balance the energy loss and the amplification effect due to the partial opening.
- the driving force is applied from the drive shaft 10 of the engine E (prime mover) mounted on the vehicle via the torque converter (fluid coupling) 12 including the lock-up clutch LC.
- the control device (shift controller 110) for the automatic transmission T that inputs and changes the speed, at least two input shafts (first auxiliary input shaft 20, second auxiliary input shaft) connected to the drive shaft of the engine (prime mover) 22), at least two output shafts (the first output shaft 24, the second output shaft 26), and the drive shaft and at least two input shafts, respectively.
- Any one of a plurality of shift gears (30, 32,%) Disposed between the contacting clutch CLn and the at least two input shafts and the output shaft is set to any one of the at least two output shafts.
- At least two driving force transmission paths (first driving force transmission path DP1, second driving force transmission path DP2) constituted by a synchro device (gear selection mechanism) Sn, the lockup clutch, the clutch, and the gear selection mechanism
- a fluid pressure supply mechanism 74 capable of supplying fluid pressure (hydraulic pressure) to the vehicle, and shift pattern determining means (S10, S12) for determining whether the shift requested by the driver is the first or second shift pattern;
- shift pattern determining means S10, S12
- the gear response mechanism can be improved by operating the gear selection mechanism Sn, and energy loss can be minimized by engaging the lock-up clutch LC and performing the shift control.
- the gear selection mechanism Sn is operated before the clutch LC is similarly engaged.
- the speed change response can be improved by releasing the lock-up clutch LC and performing the speed change control, thereby realizing the acceleration response required by the driver by the amplification action of the fluid coupling such as the torque converter 12. It becomes possible.
- the second shift pattern is configured to be a kick down (KD) shift, the above-described effects can be reliably obtained in the kick down shift (or the power down shift).
- KD kick down
- the control means determines whether the required torque requested by the driver is larger than a threshold value (S26, S100). When it is determined that the required torque is greater than the threshold value, the lock-up clutch LC is opened (S102), so that the acceleration response required by the driver can be more reliably realized. .
- the control means calculates a target slip amount of the torque converter 12 based on the required torque (S104), and the calculation Since the lock-up clutch LC is released so as to achieve the target slip amount (S106), the acceleration response required by the driver is more reliably realized within the torque range required by the engine E. be able to.
- the control means calculates a required torque on the input shaft (S200 to S204), and based on the calculated required torque.
- the target slip amount of the torque converter 12 is calculated (S206 to S208), and the lockup clutch LC is released so as to be the calculated target slip amount (S210).
- twin clutch type automatic transmission has been described above, the twin clutch type automatic transmission is not limited to the illustrated configuration, and various modifications are possible. In this sense, “at least two input shafts” are described. In other words, the present invention is also applicable when three or more members are provided.
- the engine internal combustion engine
- the present invention is not limited thereto, and any motor (electric motor) or motor (electric motor) and a hybrid of the engine that generates driving force may be used. .
- a torque converter is shown as a fluid coupling, it is not limited to that.
- hydraulic oil has been disclosed as a working fluid, it is not limited thereto.
- two drives including two input shafts and two output shafts connected to the drive shaft of the engine, and a synchronizer that can couple the clutch and the gear to the output shaft.
- a control device for an automatic transmission having a force transmission path it is determined whether the shift requested by the driver is either the first shift pattern or the second shift pattern (S10). While the clutch is engaged and fluid pressure is supplied to the driving force transmission path on the side where the target gear stage is disposed (S14, S18 to S24), the lock-up clutch is released during the second shift pattern.
- fluid pressure on the target gear position gear arrangement side is configured to be supplied (S12, S26, S20 to S24)
- Goal change The responsiveness of the shift can be improved by operating the synchronizer on the quick gear arrangement side, and the energy loss can be minimized by engaging the lockup clutch and performing the shift control. Further, when the second pattern is a kick down shift or the like, the response of the shift can be improved and the required acceleration response can be realized.
- E engine internal combustion engine (prime mover)
- CLn clutch Sn synchronizer (gear selection mechanism)
- An hydraulic actuator VAn shift valve, SHn shift solenoid valve, LC lockup clutch, LCa back pressure chamber, LCb internal pressure chamber, SEn stroke sensor, 10 drive shaft, 12 torque converter (fluid coupling), 16 main input shaft, 20, 22 sub input shaft (input shaft), 24, 26 output shaft, 30, 32, 34, 36, 40, 42, 44, 46, 50, 52, 54, 56, 60 Shift gear, 74 Hydraulic supply mechanism, LS1, LS2, 84, 96 Linear solenoid valve, 86 Regulator valve, 92 Manual valve, 94 LC shift valve , 100 LC control valve, 102, 10 Oil passage, 110 shift controller, 112 the engine controller
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
Description
Claims (5)
- ロックアップクラッチを内蔵する流体継手を介して車両に搭載された原動機の駆動軸から駆動力を入力して変速する自動変速機の制御装置において、前記原動機の駆動軸に接続される少なくとも2個の入力軸と、少なくとも2個の出力軸と、前記駆動軸と少なくとも2個の入力軸の間にそれぞれ配置されて前記駆動軸と入力軸を断接するクラッチと前記少なくとも2個の入力軸と出力軸の間に配置される複数個の変速段ギヤのいずれかを前記少なくとも2個の出力軸のいずれかに結合可能なギヤ選択機構とで構成される少なくとも2個の駆動力伝達経路と、前記ロックアップクラッチとクラッチとギヤ選択機構に流体圧を供給可能な流体圧供給機構と、運転者によって要求された変速が第1、第2の変速パターンのいずれであるか判別する変速パターン判別手段と、前記第1の変速パターンであると判別されるとき、前記ロックアップクラッチを係合しつつ、前記少なくとも2個の駆動力伝達経路のうち、目標とする変速段ギヤが配置される側の駆動力伝達経路の前記ギヤ選択機構とクラッチに流体圧を供給する一方、前記第2の変速パターンにあると判別されるとき、前記ロックアップクラッチを開放しつつ、前記目標とする変速段ギヤが配置される側の駆動力伝達経路の前記ギヤ選択機構とクラッチに流体圧を供給するように前記流体圧供給機構の動作を制御する制御手段とを備えたことを特徴とする自動変速機の制御装置。
- 前記第2の変速パターンがキックダウン変速であることを特徴とする請求項1記載の自動変速機の制御装置。
- 前記制御手段は、前記第2の変速パターンにあると判別されるとき、運転者によって要求される要求トルクがしきい値より大きいか否か判断し、前記要求トルクが前記しきい値より大きいと判断されるとき、前記ロックアップクラッチを開放することを特徴とする請求項1または2記載の自動変速機の制御装置。
- 前記制御手段は、前記要求トルクが前記しきい値より大きくないと判断されるとき、前記要求トルクに基づいて前記トルクコンバータの目標滑り量を算出し、前記算出された目標滑り量となるように前記ロックアップクラッチを開放することを特徴とする請求項3記載の自動変速機の制御装置。
- 前記制御手段は、前記第2の変速パターンにあると判別されるとき、前記入力軸上の要求トルクを算出し、前記算出された要求トルクに基づいて前記トルクコンバータの目標滑り量を算出し、前記算出された目標滑り量となるように前記ロックアップクラッチを開放することを特徴とする請求項1または2記載の自動変速機の制御装置。
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JP2012504387A JP5485370B2 (ja) | 2010-03-08 | 2011-02-17 | 自動変速機の制御装置 |
CN201180012733.1A CN102792068B (zh) | 2010-03-08 | 2011-02-17 | 自动变速器的控制装置 |
US13/581,796 US8874333B2 (en) | 2010-03-08 | 2011-02-17 | Control apparatus for automatic transmission |
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JP2010050649 | 2010-03-08 | ||
JP2010-050649 | 2010-03-08 |
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PCT/JP2011/053395 WO2011111496A1 (ja) | 2010-03-08 | 2011-02-17 | 自動変速機の制御装置 |
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US (1) | US8874333B2 (ja) |
JP (1) | JP5485370B2 (ja) |
CN (1) | CN102792068B (ja) |
WO (1) | WO2011111496A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013113310A (ja) * | 2011-11-25 | 2013-06-10 | Daihatsu Motor Co Ltd | 自動変速機の制御装置 |
WO2016151738A1 (ja) * | 2015-03-23 | 2016-09-29 | アイシン・エーアイ株式会社 | 変速機 |
JP2018013213A (ja) * | 2016-07-22 | 2018-01-25 | いすゞ自動車株式会社 | 変速機の制御装置 |
JP2018013216A (ja) * | 2016-07-22 | 2018-01-25 | いすゞ自動車株式会社 | 変速機の制御装置 |
JP2018013218A (ja) * | 2016-07-22 | 2018-01-25 | いすゞ自動車株式会社 | 変速機の制御装置 |
Families Citing this family (8)
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CN102792068B (zh) * | 2010-03-08 | 2015-03-11 | 本田技研工业株式会社 | 自动变速器的控制装置 |
US8744705B2 (en) * | 2012-03-15 | 2014-06-03 | GM Global Technology Operations LLC | System and method for determining clutch gains in a transmission during a power downshift |
US20150006032A1 (en) * | 2012-09-20 | 2015-01-01 | Tremaine Jackson | Vehicle Generating System |
JP6119702B2 (ja) * | 2014-08-29 | 2017-04-26 | トヨタ自動車株式会社 | 車両の制御装置 |
CN106641225B (zh) * | 2015-10-28 | 2019-02-26 | 长城汽车股份有限公司 | 自动变速器的换挡点标定方法、装置及系统 |
CN109695712B (zh) * | 2017-10-20 | 2020-09-29 | 上海汽车集团股份有限公司 | 锁止离合器的锁止控制方法及锁止控制装置 |
JP6922757B2 (ja) * | 2018-01-24 | 2021-08-18 | トヨタ自動車株式会社 | 自動変速機の制御装置 |
KR20200013425A (ko) * | 2018-07-30 | 2020-02-07 | 현대자동차주식회사 | 차량용 듀얼 클러치 변속기의 변속 제어부 유압제어장치 |
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- 2011-02-17 WO PCT/JP2011/053395 patent/WO2011111496A1/ja active Application Filing
- 2011-02-17 JP JP2012504387A patent/JP5485370B2/ja not_active Expired - Fee Related
- 2011-02-17 US US13/581,796 patent/US8874333B2/en active Active
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Also Published As
Publication number | Publication date |
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US8874333B2 (en) | 2014-10-28 |
CN102792068A (zh) | 2012-11-21 |
CN102792068B (zh) | 2015-03-11 |
JPWO2011111496A1 (ja) | 2013-06-27 |
US20120330521A1 (en) | 2012-12-27 |
JP5485370B2 (ja) | 2014-05-07 |
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