WO2014050522A1 - ロック機構付き摩擦要素を備えた自動変速機及びその制御方法 - Google Patents
ロック機構付き摩擦要素を備えた自動変速機及びその制御方法 Download PDFInfo
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- WO2014050522A1 WO2014050522A1 PCT/JP2013/074233 JP2013074233W WO2014050522A1 WO 2014050522 A1 WO2014050522 A1 WO 2014050522A1 JP 2013074233 W JP2013074233 W JP 2013074233W WO 2014050522 A1 WO2014050522 A1 WO 2014050522A1
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- pressure
- friction element
- oil chamber
- fastening
- side oil
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
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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
- F16D25/00—Fluid-actuated clutches
- F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
- F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
- F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
- F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
- F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
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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
- 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
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/3023—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure
- F16H63/3026—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure comprising friction clutches or brakes
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
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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
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/304—Signal inputs from the clutch
- F16D2500/30406—Clutch slip
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1224—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
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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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/1288—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is an actuator
-
- 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
- F16H2710/00—Control devices for speed-change mechanisms, the speed change control is dependent on function parameters of the gearing
Definitions
- the present invention relates to control of an automatic transmission including a friction element with a lock mechanism.
- two members arranged coaxially both are rotating elements in the case of a clutch, one is a rotating element and the other is a non-rotating element in the case of a brake) are connected by hydraulic pressure.
- a moving friction element is used (JP7-12221A).
- a friction element for example, a plurality of friction plates are slidably attached to each of two members in the axial direction, and the friction plates of the two members are alternately arranged.
- the friction plates of the two members are pressed against each other by the hydraulic piston, the two members are connected via the friction plate.
- An object of the present invention is to suppress slipping of a friction element when the friction element with a lock mechanism slips in an automatic transmission including the friction element with a lock mechanism.
- the automatic transmission is arranged in a power transmission path, and when the ON pressure is supplied to the fastening side oil chamber, the lock mechanism is locked, and when the lock mechanism is locked, The friction element that maintains the engagement state even when the hydraulic pressure of the engagement side oil chamber is lowered, and when the vehicle travels, the ON pressure is supplied to the engagement side oil chamber to tighten the friction element and the lock mechanism is locked If the friction element slips despite the fact that the friction element has been fastened in the fastening process, the ON pressure is supplied to the fastening side oil chamber. And an automatic transmission including the control device. A control method corresponding to this is also provided.
- the ON pressure is supplied to the fastening side oil chamber, so that the friction element is prevented from slipping. Thereby, the fall of the power performance of the vehicle by a friction element slipping can be suppressed.
- FIG. 1 is a schematic configuration diagram of a vehicle including an automatic transmission according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the forward clutch and a clutch operation pack for operating the forward clutch.
- FIG. 3 is a flowchart showing the contents of slip detection / suppression processing performed by the transmission controller.
- FIG. 4 is a flowchart showing the contents of verification processing performed by the transmission controller.
- FIG. 1 shows a schematic configuration of a vehicle provided with an automatic transmission according to an embodiment of the present invention.
- the vehicle includes an engine 1, a torque converter 2, and a transmission 3.
- the output rotation of the engine 1 is transmitted to driving wheels (not shown) via the torque converter 2, the transmission 3, and a differential gear unit (not shown).
- the transmission 3 is a stepped or continuously variable automatic transmission.
- the transmission 3 includes a reverse brake 4 and a forward clutch 5.
- the transmission 3 inverts and outputs the rotation of the engine 1 when the reverse brake 4 is engaged, and outputs the rotation of the engine 1 while maintaining the rotation direction when the forward clutch 5 is engaged.
- the reverse brake 4 is a conventional friction element that is fastened by supplying a fastening pressure and needs to continue to be supplied in order to maintain a fastened state. In order to release the reverse brake 4, the supply of the fastening pressure may be stopped.
- the forward clutch 5 is a friction element including a lock mechanism BL as will be described later. If ON pressure is supplied to the forward clutch 5 and the lock mechanism BL is in the locked state, the forward clutch 5 can maintain the engaged state even if the supply of the ON pressure is stopped. In order to release the forward clutch 5, it is only necessary to supply OFF pressure to the forward clutch 5 and to release the lock mechanism BL. Once the lock mechanism BL is released, the forward clutch 5 is forwarded even if the supply of OFF pressure is stopped. The clutch 5 can maintain the released state.
- the configuration of the forward clutch 5 will be described in detail later.
- reverse brake 4 and the forward clutch 5 are in an interlock state in which the input / output shaft of the transmission 3 becomes non-rotatable when both are simultaneously engaged, so that these engagements are alternatively performed.
- the hydraulic control circuit 7 includes a regulator valve that regulates the hydraulic pressure from the hydraulic pump 8 driven by the engine 1 to the line pressure, and a friction element (the transmission 3 is a continuously variable transmission) including the forward clutch 5 using the line pressure as a source pressure.
- a solenoid valve that regulates the hydraulic pressure supplied to the continuously variable transmission mechanism
- an oil passage that connects the hydraulic pump 8, each valve, and each friction element are provided.
- the transmission controller 9 includes a CPU, a ROM, a RAM, an input / output interface, and the like.
- the transmission controller 9 determines the driving state of the vehicle based on various signals input from various sensors and the engine controller, and shift stages (shifts) suitable for the driving state.
- a command is output to the hydraulic control circuit 7 so that the gear ratio) is realized.
- the transmission controller 9 includes a rotation speed sensor 101 that detects a rotation speed Ne of the engine 1, a rotation speed sensor 102 that detects an input rotation speed of the transmission 3, and a rotation speed sensor 103 that detects an output rotation speed of the transmission 3. , A mode detection switch 104 for detecting the mode of the transmission 3 selected by the select switch 11, an accelerator opening sensor 105 for detecting an operation amount of an accelerator pedal (hereinafter referred to as “accelerator opening APO”), a brake A signal or the like from the brake switch 106 or the like that detects ON / OFF is input.
- a rotation speed sensor 101 that detects a rotation speed Ne of the engine 1
- a rotation speed sensor 102 that detects an input rotation speed of the transmission 3
- a rotation speed sensor 103 that detects an output rotation speed of the transmission 3.
- a mode detection switch 104 for detecting the mode of the transmission 3 selected by the select switch 11
- an accelerator opening sensor 105 for detecting an operation amount of an accelerator pedal (hereinafter referred to as
- the select switch 11 is a lever type or a button type, and by operating the lever or button, the mode of the transmission 3 includes a parking mode (hereinafter referred to as “P mode”), a reverse mode (hereinafter referred to as “R mode”). ), Neutral mode (hereinafter referred to as “N mode”), and drive mode (hereinafter referred to as “D mode”).
- P mode parking mode
- R mode reverse mode
- N mode Neutral mode
- D mode drive mode
- the transmission controller 9 engages or disengages the reverse brake 4 and the forward clutch 5 according to the mode selected by the select switch 11. Specifically, in the D mode, the reverse brake 4 is released and the forward clutch 5 is engaged. In the R mode, the reverse brake 4 is engaged and the forward clutch 5 is released. In the P mode and the N mode, the reverse brake 4 and the forward clutch 5 are released.
- FIG. 2 shows a cross section of the forward clutch 5 and the clutch operation pack 6 for operating the forward clutch 5. Each configuration will be described below.
- the forward clutch 5 includes a clutch drum 51, a clutch hub 52, a driven plate 53, a drive plate 54, and a retainer plate 55.
- the clutch drum 51 and the clutch hub 52 are arranged coaxially.
- the clutch drum 51 is connected to a rotating element (shaft, gear, etc.) not shown.
- the clutch hub 52 is connected to another rotating element (shaft, gear, etc.) not shown.
- the driven plate 53 is attached to the clutch drum 51 so as to be slidable in the axial direction by spline coupling.
- a drive plate 54 is attached to the clutch hub 52 so as to be slidable in the axial direction by spline coupling.
- the four driven plates 53 and the four drive plates 54 are alternately arranged, and clutch facings are attached to the friction surfaces on both sides of the drive plate 54.
- the clutch drum 51 transmits the rotation input from the rotating element connected to the clutch drum 51 to the clutch hub 52 via the driven plate 53 and the drive plate 54.
- the retainer plate 55 is interposed between a drive plate 54 disposed at the end opposite to the hydraulic piston 61 and a snap ring 64 fixed in a groove on the inner periphery of the clutch drum 51.
- One surface of the retainer plate 55 is a friction surface.
- the retainer plate 55 is thicker in the axial direction than the driven plate 53, and prevents the driven plate 53 and the drive plate 54 from falling over.
- the clutch operation pack 6 includes a hydraulic piston 61, an ON pressure piston chamber 62, an OFF pressure piston chamber 63, a snap ring 64, a diaphragm spring 65, a partition plate 66, and a lock mechanism BL.
- the hydraulic piston 61 is arranged so as to be axially displaceable with respect to the forward clutch 5.
- One surface of the hydraulic piston 61 is an ON pressure receiving surface 61a, and the other surface is an OFF pressure receiving surface 61b.
- the ON pressure piston chamber 62 is defined between the clutch drum 51 and the hydraulic piston 61 in order to apply an ON pressure to the ON pressure receiving surface 61 a of the hydraulic piston 61.
- the OFF pressure piston chamber 63 is defined between the partition plate 66 fixed to the clutch drum 51 and the hydraulic piston 61 in order to apply an OFF pressure to the OFF pressure receiving surface 61 b of the hydraulic piston 61.
- the snap ring 64 is disposed at a position opposite to the hydraulic piston 61 with the forward clutch 5 interposed therebetween, and supports the forward clutch 5 in the axial direction.
- the diaphragm spring 65 is interposed between the clutch side end surface 61 c of the hydraulic piston 61 and the piston side end surface 5 a of the forward clutch 5.
- Two diaphragm springs 65 are arranged in the axial direction so as to apply a fastening force to the forward clutch 5 when the hydraulic piston 61 is moved in the fastening direction toward the snap ring 64.
- the lock mechanism BL is built in the clutch drum 51, and includes a hydraulic piston 61, a ball holding piston 67, and a ball 68.
- the hydraulic piston 61 is arranged so as to be axially displaceable with respect to the forward clutch 5.
- the hydraulic piston 61 is provided with a storage portion 61d and a tapered surface 61e.
- the storage portion 61d stores the ball 68 when the movement of the hydraulic piston 61 in the release direction is restricted.
- the tapered surface 61e is formed continuously with the storage portion 61d, and pushes the ball 68 inward when the hydraulic piston 61 strokes in the release direction.
- the ball holding piston 67 is disposed in a cylindrical space defined by an inner peripheral cylindrical portion 51 a of the clutch drum 51 that covers the hydraulic piston 61 and a partition cylindrical wall portion 51 b that protrudes axially from the clutch drum 51.
- the ball holding piston 67 moves in the axial direction when an ON pressure or an OFF pressure is applied.
- a seal ring 84 seals between the outer peripheral surface of the ball holding piston 67 and the partition cylindrical wall portion 51b, and a seal ring 85 seals between the inner peripheral surface of the ball holding piston 67 and the inner peripheral cylindrical portion 51a.
- a seal ring 86 seals between the inner peripheral surface of the piston 61 and the partition cylindrical wall 51b.
- the ON pressure port 51d and the ON pressure piston chamber 62 opened in the clutch drum 51 are composed of an ON pressure communication groove 67a formed in the ball holding piston 67, and an ON pressure communication hole 51e opened in the partition cylindrical wall 51b. It is communicated via.
- the OFF pressure port 51f and the OFF pressure piston chamber 63 opened in the clutch drum 51 are formed between the OFF pressure communication groove 67b formed in the ball holding piston 67, the end of the partition cylindrical wall 51b, and the partition plate 66. Are communicated with each other through an OFF pressure communication gap.
- the ball holding piston 67 is provided with a storage portion 67c, a tapered surface 67d, and a lock surface 67e.
- the storage portion 67c stores the ball 68 when the hydraulic piston 61 is allowed to move in the release direction.
- the taper surface 67d and the lock surface 67e are formed continuously with the storage portion 67c.
- the ball 68 is provided in a ball hole 51c opened in the partition cylindrical wall 51b.
- the ball 68 receives force from the tapered surfaces 61e and 67d of the pistons 61 and 67 as the hydraulic piston 61 and the ball holding piston 67 are moved in the axial direction by the action of the ON pressure or the OFF pressure. Move in the radial direction.
- the hydraulic piston 61 moves in the fastening direction approaching the forward clutch 5, and the forward clutch 5 is moved by the urging force of the diaphragm spring 65 that is compressed. It will be in a fastening state.
- the hydraulic piston 61 moves in the fastening direction
- the ball 68 moves in the outer diameter direction due to the centrifugal force and hydraulic pressure caused by the rotation, and the ball 68 is stored in the storage portion 61d.
- the ball holding piston 67 moves in the axial direction (direction toward the forward clutch 5) with the ON pressure action on the ball holding piston 67, and the ball 68 held in the storage portion 67c is held by the lock surface 67e.
- the ON pressure is supplied to the ON pressure piston chamber 62 only during the engagement operation, and the ON pressure supply for maintaining the engaged state of the forward clutch 5 is not necessary.
- the control of the transmission controller 9 that locks the lock mechanism BL by supplying and discharging the ON pressure and thereby maintains the forward clutch 5 in the engaged state is referred to as an engagement process.
- the fastening process is executed when is selected.
- the ball holding piston 67 moves in the axial direction (direction away from the forward clutch 5) from the holding position of the ball 68 by the lock surface 67e to the holding release position.
- a force obtained by combining the force of the OFF pressure and the reaction force of the fastening force of the diaphragm spring 65 acts on the hydraulic piston 61, and the hydraulic piston 61 strokes in the return direction and pushes the ball 68 back in the unlocking direction.
- the lock mechanism BL is unlocked and the forward clutch 5 is released.
- the lock controller BL is unlocked by supplying and discharging the OFF pressure, and this is called control and release processing of the transmission controller 9 for maintaining the forward clutch in the disengaged state.
- the release process is executed when a value other than is selected.
- the forward clutch 5 can be maintained in the engaged state even if the ON pressure is not supplied to the ON pressure piston chamber 62 if the lock mechanism BL is in the locked state by the engaging process. it can.
- the forward clutch 5 may slip, and when slipping occurs, it is necessary to suppress slipping.
- the transmission controller 9 performs slip detection / suppression control described below.
- FIG. 3 is a flowchart showing the contents of slip detection / suppression processing performed by the transmission controller 9 and is executed when the vehicle is running (when the D mode is selected).
- the transmission controller 9 first determines whether the forward clutch 5 has slipped based on the input rotation speed and the output rotation speed of the transmission 3 (S11).
- the slippage of the forward clutch 5 can be determined based on a deviation or ratio change between the input rotation speed and the output rotation speed.
- the process proceeds to S12, and the transmission controller 9 supplies ON pressure to the ON pressure piston chamber 62.
- the ON pressure supplied at this time is the maximum pressure that can be supplied from the hydraulic control circuit 7.
- the hydraulic piston 61 further compresses the diaphragm spring 65 and the fastening force of the forward clutch 5 is increased, so that the forward clutch 5 is prevented from slipping.
- the transmission controller 9 performs a verification process for verifying whether the forward clutch 5 slips temporarily (S13), which will be described later.
- FIG. 4 is a flowchart showing the contents of the verification process (S13 in FIG. 3).
- the transmission controller 9 first decreases the hydraulic pressure in the ON pressure piston chamber 62 by ⁇ P (S21).
- the transmission controller 9 determines whether the forward clutch 5 has slipped by lowering the hydraulic pressure of the ON pressure piston chamber 62. The determination is made based on the input rotation speed and the output rotation speed of the transmission 3 as in S11.
- the process proceeds to S24, and the transmission controller 9 determines whether the hydraulic pressure in the ON pressure piston chamber 62 has reached 0 MPa. If the oil pressure in the ON pressure piston chamber 62 is not 0 MPa, the process returns to S21, the oil pressure in the ON pressure piston chamber 62 is further lowered (S21), and it is determined again whether the forward clutch 5 has slipped (S22). .
- the slip of the forward clutch 5 determined in S11 is assumed to be temporary, and the processing is performed with the hydraulic pressure in the ON pressure piston chamber 62 lowered. After that, the process returns to the normal fastening process.
- the ON pressure is supplied to the ON pressure piston chamber 62 when the forward clutch 5 slips even though the forward clutch 5 is engaged by the engagement process (S11). : YES, S12), slippage of the forward clutch 5 is suppressed. Thereby, the fall of the power performance of the vehicle by the forward clutch 5 slipping can be suppressed.
- the hydraulic pressure supplied to the ON pressure piston chamber 62 is stopped after the lock mechanism BL is locked, but the hydraulic pressure of the ON pressure piston chamber 62 is reduced without stopping. Also good.
- the hydraulic pressure supplied to the OFF pressure piston chamber 63 is stopped after the lock mechanism BL is unlocked. However, even if the hydraulic pressure in the OFF pressure piston chamber 63 is reduced without stopping. Good.
- the specific configuration of the forward clutch 5 shown in FIG. 2 is an example of a friction element with a lock mechanism, and the present invention can be applied to a friction element with a lock mechanism of other configurations.
- the reverse brake 4 may be configured by a friction element with a lock mechanism similarly to the forward clutch 5, and the slip detection / suppression process may be performed on the reverse brake 4.
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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)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims (4)
- 自動変速機であって、
動力伝達経路に配置され、締結側油室にON圧を供給するとロック機構がロック状態になり、前記ロック機構がロック状態になると前記締結側油室の油圧を下げても締結状態を維持する摩擦要素と、
車両走行時は、前記締結側油室に前記ON圧を供給して前記摩擦要素を締結するとともに前記ロック機構をロック状態にし、前記締結側油室の油圧を下げる締結処理を行い、前記締結処理で前記摩擦要素を締結したにもかかわらず前記摩擦要素が滑った場合は、前記締結側油室に前記ON圧を供給する制御装置と、
を備えた自動変速機。 - 請求項1に記載の自動変速機であって、
前記制御装置は、
前記摩擦要素が滑って前記摩擦要素に前記ON圧を供給した後、前記締結側油室の油圧を下げ、前記締結側油室の油圧を下げても前記摩擦要素が滑らなかった場合は前記締結側油室の油圧を下げたままにする、
自動変速機。 - 請求項2に記載の自動変速機であって、
前記制御装置は、
前記締結側油室の油圧を下げたことで前記摩擦要素が再び滑った場合は、前記締結側油室に前記ON圧を再び供給し、それ以降の前記締結処理では前記締結側油室に前記ON圧を供給し続ける、
自動変速機。 - 動力伝達経路に配置され、締結側油室にON圧を供給するとロック機構がロック状態になり、前記ロック機構がロック状態になると前記締結側油室の油圧を下げても締結状態を維持する摩擦要素を備えた自動変速機の制御方法であって、
車両走行時は、前記締結側油室に前記ON圧を供給して前記摩擦要素を締結するとともに前記ロック機構をロック状態にし、前記締結側油室の油圧を下げる締結処理を行い、
前記締結処理で前記摩擦要素を締結したにもかかわらず前記摩擦要素が滑った場合は、前記締結側油室に前記ON圧を供給する、
自動変速機の制御方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380049972.3A CN104662337A (zh) | 2012-09-26 | 2013-09-09 | 具备带锁定机构的摩擦元件的自动变速器及其控制方法 |
JP2014538348A JP5830174B2 (ja) | 2012-09-26 | 2013-09-09 | ロック機構付き摩擦要素を備えた自動変速機及びその制御方法 |
KR1020157007097A KR20150047537A (ko) | 2012-09-26 | 2013-09-09 | 로크 기구를 갖는 마찰 요소를 구비한 자동 변속기 및 그 제어 방법 |
US14/430,672 US20150252892A1 (en) | 2012-09-26 | 2013-09-09 | Automatic transmission equipped with friction element having locking mechanism attached thereto, and control method therefor |
EP13840579.0A EP2908032A4 (en) | 2012-09-26 | 2013-09-09 | AUTOMATIC TRANSMISSION WITH A REAMING BODY WITH A LOCKING MECHANISM USED THEREFOR AND CONTROL METHOD THEREFOR |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012212177 | 2012-09-26 | ||
JP2012-212177 | 2012-09-26 |
Publications (1)
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WO2014050522A1 true WO2014050522A1 (ja) | 2014-04-03 |
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PCT/JP2013/074233 WO2014050522A1 (ja) | 2012-09-26 | 2013-09-09 | ロック機構付き摩擦要素を備えた自動変速機及びその制御方法 |
Country Status (6)
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US (1) | US20150252892A1 (ja) |
EP (1) | EP2908032A4 (ja) |
JP (1) | JP5830174B2 (ja) |
KR (1) | KR20150047537A (ja) |
CN (1) | CN104662337A (ja) |
WO (1) | WO2014050522A1 (ja) |
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US11032935B1 (en) | 2019-12-10 | 2021-06-08 | Northrop Grumman Systems Corporation | Support structure for a flexible interconnect of a superconductor |
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JPS6111028U (ja) * | 1984-06-25 | 1986-01-22 | 日産自動車株式会社 | クラツチ装置 |
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JPH0712221A (ja) | 1993-06-29 | 1995-01-17 | Matsuda Sangyo Kk | 自動変速機の締結力調整装置 |
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JP2012072855A (ja) * | 2010-09-29 | 2012-04-12 | Aisin Seiki Co Ltd | クラッチ |
JP2012197851A (ja) * | 2011-03-22 | 2012-10-18 | Jatco Ltd | 多板式摩擦係合機構 |
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DE102008027070A1 (de) * | 2007-06-20 | 2008-12-24 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Sperrmechanismus für Kupplungen und Bremsen |
EP2166255B1 (en) * | 2007-12-27 | 2013-12-04 | Aisin AW Co., Ltd. | Controller of automatic shift |
JP5464270B2 (ja) * | 2010-03-31 | 2014-04-09 | アイシン・エィ・ダブリュ株式会社 | 自動変速機の制御装置 |
JP5315375B2 (ja) * | 2011-03-29 | 2013-10-16 | ジヤトコ株式会社 | 多板式摩擦係合機構 |
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2013
- 2013-09-09 US US14/430,672 patent/US20150252892A1/en not_active Abandoned
- 2013-09-09 CN CN201380049972.3A patent/CN104662337A/zh active Pending
- 2013-09-09 WO PCT/JP2013/074233 patent/WO2014050522A1/ja active Application Filing
- 2013-09-09 JP JP2014538348A patent/JP5830174B2/ja not_active Expired - Fee Related
- 2013-09-09 EP EP13840579.0A patent/EP2908032A4/en not_active Withdrawn
- 2013-09-09 KR KR1020157007097A patent/KR20150047537A/ko not_active Application Discontinuation
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DE2540191A1 (de) * | 1975-09-10 | 1977-03-17 | Zahnradfabrik Friedrichshafen | Druckbetaetigte lamellenkupplung mit stehendem ringzylinder |
JPS6111028U (ja) * | 1984-06-25 | 1986-01-22 | 日産自動車株式会社 | クラツチ装置 |
JPH01108451A (ja) * | 1987-09-28 | 1989-04-25 | Saturn Corp | 自動車トランスミッションの制御方法 |
JPH0712221A (ja) | 1993-06-29 | 1995-01-17 | Matsuda Sangyo Kk | 自動変速機の締結力調整装置 |
JPH0763234A (ja) * | 1993-08-27 | 1995-03-07 | Komatsu Ltd | 変速機の制御方法 |
JPH102390A (ja) * | 1996-06-18 | 1998-01-06 | Toyota Motor Corp | ベルト式無段変速機付車両の制御装置 |
US20100179026A1 (en) * | 2009-01-12 | 2010-07-15 | Gm Global Technology Operations, Inc. | Latching clutch assembly and method of operating the same |
JP2010216501A (ja) * | 2009-03-13 | 2010-09-30 | Toyota Motor Corp | 自動変速機のピストン構造 |
JP2010242852A (ja) * | 2009-04-06 | 2010-10-28 | Honda Motor Co Ltd | 摩擦係合装置 |
JP2012072855A (ja) * | 2010-09-29 | 2012-04-12 | Aisin Seiki Co Ltd | クラッチ |
JP2012197851A (ja) * | 2011-03-22 | 2012-10-18 | Jatco Ltd | 多板式摩擦係合機構 |
Non-Patent Citations (1)
Title |
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See also references of EP2908032A4 |
Also Published As
Publication number | Publication date |
---|---|
EP2908032A4 (en) | 2016-08-10 |
KR20150047537A (ko) | 2015-05-04 |
US20150252892A1 (en) | 2015-09-10 |
CN104662337A (zh) | 2015-05-27 |
EP2908032A1 (en) | 2015-08-19 |
JPWO2014050522A1 (ja) | 2016-08-22 |
JP5830174B2 (ja) | 2015-12-09 |
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