WO2014050472A1 - 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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- WO2014050472A1 WO2014050472A1 PCT/JP2013/073826 JP2013073826W WO2014050472A1 WO 2014050472 A1 WO2014050472 A1 WO 2014050472A1 JP 2013073826 W JP2013073826 W JP 2013073826W WO 2014050472 A1 WO2014050472 A1 WO 2014050472A1
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- pressure
- oil chamber
- 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
- 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
- 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
- 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
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0212—Details of pistons for master or slave cylinders especially adapted for fluid control
-
- 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
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
-
- 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
- F16H2063/303—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by fluid pressure comprising friction clutches or brakes the friction member is actuated and released by applying pressure to different fluid chambers
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.
- a friction element for example, a plurality of friction plates are attached to two members so as to be slidable 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 (JP2007-12221A).
- hydraulic pressure is supplied until the friction element is engaged, but after the friction element is engaged, the movement of the hydraulic piston is restricted by a lock mechanism, and the friction element can maintain the engagement state even if the oil pressure is lowered. It is conceivable to release the lock mechanism by supplying hydraulic pressure for releasing the element so that the released state of the friction element can be maintained even if the hydraulic pressure is lowered. According to this configuration, it is not necessary to continue supplying hydraulic pressure to the hydraulic piston, and the fuel consumption of the vehicle can be improved by the amount that the load on the hydraulic pump can be reduced.
- the present invention has been made in view of such a technical problem.
- the present invention is operated in a short time during running, from running mode to non-running mode to running mode.
- the purpose is to prevent the delay of the fastening of the friction element in the case of.
- an automatic transmission is disposed in a power transmission path, and is fastened when an ON pressure is supplied to a fastening-side oil chamber, and the lock mechanism is locked, and the lock mechanism is locked.
- the oil pressure in the engagement side oil chamber is lowered, the engagement state is maintained, and when the lock mechanism is in the lock state, if the OFF pressure is supplied to the release side oil chamber, the lock mechanism is in the unlock state, and the release A friction element that maintains a released state even when the oil pressure in the side oil chamber is lowered, a select switch that can select a travel mode or a non-travel mode as a mode of the automatic transmission, and the travel mode is selected by the select switch Then, the ON pressure is supplied to the engagement side oil chamber to bring the lock mechanism into a locked state, and then the engagement control is performed to lower the oil pressure of the engagement side oil chamber, When the non-running mode is selected by the select switch, the OFF pressure is supplied to the release-side oil chamber so that the lock mechanism is unlocked,
- 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 control performed by the transmission controller when the select switch is operated from the D mode to the N mode.
- FIG. 4 is a flowchart showing the contents of the D mode holding control 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.
- 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 traveling state of the vehicle based on various signals input from various sensors and the engine controller, and shift stages (shifts) suitable for the traveling 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.
- An inhibitor switch 104 for detecting the position of the select switch 11, an accelerator opening sensor 105 for detecting an accelerator pedal operation amount (hereinafter referred to as "accelerator opening APO"), and a brake switch 106 for detecting ON / OFF of a brake. Etc. are input.
- 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 forward clutch 5 and the reverse brake 4 according to the mode selected by the select switch 11. Specifically, in the D mode, the forward clutch 5 is engaged and the reverse brake 4 is released. In the R mode, the forward clutch 5 is released and the reverse brake 4 is engaged. In the P mode and the N mode, the forward clutch 5 and the reverse brake 4 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 driven by the urging force of the diaphragm spring 65 that is compressed. Is in a fastened 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 realizes the supply and discharge of the ON pressure is referred to as fastening control, and the transmission controller 9 executes the fastening control when the D mode is selected by the select switch 11.
- the ball holding piston 67 moves in the axial direction (the 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.
- the control of the transmission controller 9 that realizes the supply and discharge of the OFF pressure is called release control, and the transmission controller 9 executes release control when a mode other than the D mode is selected by the select switch 11.
- the transmission controller 9 executes release control when the mode other than the D mode is selected by the select switch 11, so that the N mode is selected during traveling due to an erroneous operation or the like, and the OFF pressure is supplied.
- the lock mechanism BL is released and the forward clutch 5 is in the released state, even if the D mode is selected and the ON pressure is supplied thereafter, the residual pressure of the OFF pressure becomes resistance, and the engagement of the forward clutch 5 is delayed.
- the transmission controller 9 prevents the delay of the engagement of the forward clutch 5 by performing the control described below when the N mode is selected during traveling.
- FIG. 3 is a flowchart showing the contents of control performed by the transmission controller 9 when the select switch 11 is operated from the D mode to the N mode.
- release control is performed to supply the OFF pressure as described above to release the lock state of the lock mechanism BL and to put the forward clutch 5 in the release state. Further, after the OFF pressure is drained, the ON pressure and the OFF pressure are not supplied to the forward clutch 5.
- the transmission controller 9 determines whether or not the vehicle speed is higher than the stop determination vehicle speed.
- the vehicle speed is calculated based on the rotational speed Ne detected by the rotational speed sensor 101 and the output rotational speed detected by the rotational speed sensor 103.
- the stop determination vehicle speed is set at a vehicle speed that is considered to be highly likely to stop when the driver selects the N mode while traveling. In this case, in order to reliably release the lock mechanism BL before stopping, the speed is set to 20 km / h, for example.
- the process proceeds to the D mode holding control without supplying the OFF pressure (S13). If the vehicle speed is equal to or less than the stoppage determination vehicle speed, the OFF pressure is supplied and the routine proceeds to normal control in N mode (S14).
- FIG. 4 is a flowchart showing the contents of the D mode holding control performed by the transmission controller 9.
- the transmission controller 9 When shifting to the D mode holding control in S13, first, the transmission controller 9 starts a timer and measures an elapsed time after starting the D mode holding control (S21).
- the transmission controller 9 determines whether or not the select switch 11 has been operated from the N mode to the R mode. When operated from the N mode to the R mode, the OFF pressure is supplied to shift to the normal control of the R mode (S23). If it is not operated from the N mode to the R mode, the process proceeds to S24.
- the release pressure is supplied as described above to release the lock mechanism BL and release the forward clutch 5. Further, after the OFF pressure is drained, the ON pressure and the OFF pressure are not supplied to the forward clutch 5. Further, after the forward clutch 5 is released, the engagement pressure is supplied to the reverse brake 4 and the engagement state is maintained while the R mode is selected.
- the transmission controller 9 determines whether or not the select switch 11 has been operated from the N mode to the D mode. When the operation mode is changed from the N mode to the D mode, the process proceeds to the normal control of the D mode (S25). If it is not operated from the N mode to the D mode, the process proceeds to S26.
- the ON pressure is supplied to bring the forward clutch 5 into the engaged state, and the engagement control is performed to bring the lock mechanism BL into the locked state. Further, after the ON pressure is drained, the ON pressure and the OFF pressure are not supplied to the forward clutch 5.
- the transmission controller 9 determines whether or not the measurement time after starting the timer in S21 is longer than the operation confirmation time.
- the operation confirmation time is set to a time that is considered to be required until the driver recognizes an erroneous operation and returns to the D mode when the driver selects the N mode by an erroneous operation. For example, 2 sec.
- the OFF pressure is supplied by the release control, and the process shifts to the normal control of the N mode (S28). If the timer measurement time is equal to or shorter than the operation confirmation time, the process proceeds to S27.
- the driver does not feel uncomfortable by shifting to the normal control of the N mode as described above.
- the transmission controller 9 determines whether the vehicle speed is equal to or lower than the stop determination vehicle speed.
- the OFF pressure is supplied to shift to the normal control of the N mode (S28).
- the process proceeds to S22 and the control routine is repeatedly executed.
- the OFF pressure is not supplied when the vehicle speed is higher than the stop determination vehicle speed, so that the lock state of the lock mechanism BL is not released.
- the engaged state of the forward clutch 5 is maintained. Therefore, even if the select switch 11 is subsequently operated from the N mode to the D mode, the engaged state of the forward clutch 5 remains maintained, and there is no delay in the engagement of the forward clutch 5 (claims 1 and 5). Corresponding effect).
- the driver does not select the N mode by mistake but intends to stop. Since it is considered that there is a high possibility that the N mode has been selected, the OFF pressure is supplied to release the lock state of the lock mechanism BL, and the forward clutch 5 is released. Therefore, the driver does not feel uncomfortable (effect corresponding to claim 3).
- the specific configuration of the forward clutch 5 shown in FIG. 2 is an example of a friction element with a lock mechanism.
- the present invention can be applied to a friction element with a lock mechanism having a configuration other than this.
- the present invention may be applied with the reverse brake 4 provided with a lock mechanism.
- the traveling mode is the R mode.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Control Of Transmission Device (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Description
Claims (5)
- 自動変速機であって、
動力伝達経路に配置され、ON圧を締結側油室に供給すると締結するとともに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し、前記ロック機構がロック状態のときに解放側油室にOFF圧を供給すると前記ロック機構がアンロック状態になり、前記解放側油室の油圧を下げても解放状態を維持する摩擦要素と、
前記自動変速機のモードとして走行モード又は非走行モードを選択することのできるセレクトスイッチと、
前記セレクトスイッチによって前記走行モードが選択されたら、前記締結側油室に前記ON圧を供給して前記ロック機構をロック状態にし、その後前記締結側油室の油圧を下げる締結制御を行い、前記セレクトスイッチによって前記非走行モードが選択されたら、前記解放側油室に前記OFF圧を供給して前記ロック機構をアンロック状態にし、その後前記解放側油室の油圧を下げる解放制御を行う制御装置と、
を備え、
前記制御装置は、前記セレクトスイッチによって前記非走行モードが選択された時に、車速が停車判定車速より高い場合は、前記OFF圧を前記解放側油室に供給しない自動変速機。 - 請求項1に記載の自動変速機であって、
前記制御装置は、前記セレクトスイッチによって前記非走行モードが選択された時に、アクセルONかつ前記車速が前記停車判定車速より高い場合は、前記OFF圧を前記解放側油室に供給しない自動変速機。 - 請求項1又は2に記載の自動変速機であって、
前記制御装置は、前記セレクトスイッチによって前記非走行モードが選択され、前記OFF圧を前記解放側油室に供給しない状態が操作確定時間より長く続いた場合は、前記OFF圧を前記締結側油室に供給する自動変速機。 - 請求項1から3のいずれか一つに記載の自動変速機であって、
前記制御装置は、前記セレクトスイッチによって前記非走行モードが選択され、前記OFF圧を前記解放側油室に供給しない場合であって、前記車速が前記停車判定車速以下になった場合は、前記OFF圧を前記締結側油室に供給する自動変速機。 - 動力伝達経路に配置され、ON圧を締結側油室に供給すると締結するとともに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し、前記ロック機構がロック状態のときに解放側油室にOFF圧を供給すると前記ロック機構がアンロック状態になり、前記解放側油室の油圧を下げても解放状態を維持する摩擦要素と、
自動変速機のモードとして走行モード又は非走行モードを選択することのできるセレクトスイッチと、を備えた自動変速機の制御方法であって、
前記セレクトスイッチによって前記走行モードが選択されたら、前記締結側油室に前記ON圧を供給して前記ロック機構をロック状態にし、その後前記締結側油室の油圧を下げる締結制御を行い、
前記セレクトスイッチによって前記非走行モードが選択されたら、前記解放側油室に前記OFF圧を供給して前記ロック機構をアンロック状態にし、その後前記解放側油室の油圧を下げる解放制御を行い、
前記セレクトスイッチによって前記非走行モードが選択された時に、車速が停車判定車速より高い場合は、前記OFF圧を前記解放側油室に供給しない自動変速機の制御方法。
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| JP2014538330A JP5844911B2 (ja) | 2012-09-26 | 2013-09-04 | 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 |
| EP13840978.4A EP2902669A1 (en) | 2012-09-26 | 2013-09-04 | Automatic transmission equipped with friction element having locking mechanism attached thereto, and control method therefor |
| KR1020157007243A KR20150048793A (ko) | 2012-09-26 | 2013-09-04 | 로크 기구를 갖는 마찰 요소를 구비한 자동 변속기 및 그 제어 방법 |
| CN201380049929.7A CN104662338A (zh) | 2012-09-26 | 2013-09-04 | 具备带锁定机构的摩擦元件的自动变速器及其控制方法 |
| US14/430,728 US20150252896A1 (en) | 2012-09-26 | 2013-09-04 | Automatic transmission with friction element having lock mechanism, and control method thereof |
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| JP2012212186 | 2012-09-26 |
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| JPS62160933A (ja) * | 1986-01-08 | 1987-07-16 | Fuji Heavy Ind Ltd | 車両用電磁式クラツチの制御装置 |
| JP2007012221A (ja) | 2005-07-04 | 2007-01-18 | Advantest Corp | 試験装置、及び製造方法 |
| JP2010242852A (ja) * | 2009-04-06 | 2010-10-28 | Honda Motor Co Ltd | 摩擦係合装置 |
| JP2012197851A (ja) * | 2011-03-22 | 2012-10-18 | Jatco Ltd | 多板式摩擦係合機構 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3118565C2 (de) * | 1981-05-11 | 1984-11-29 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | Lamellenkupplung |
| US7891261B2 (en) * | 2007-08-16 | 2011-02-22 | GM Global Technology Operations LLC | Clutch actuation system with locking mechanism and method of controlling engagement of a clutch |
| US7828128B2 (en) * | 2007-11-29 | 2010-11-09 | Ford Global Technologies, Llc | Control of fluid pressure in a torque converter of an automatic transmission |
| US8172058B2 (en) * | 2009-01-12 | 2012-05-08 | GM Global Technology Operations LLC | Latching clutch assembly and method of operating the same |
| JP2012072855A (ja) * | 2010-09-29 | 2012-04-12 | Aisin Seiki Co Ltd | クラッチ |
-
2013
- 2013-09-04 US US14/430,728 patent/US20150252896A1/en not_active Abandoned
- 2013-09-04 WO PCT/JP2013/073826 patent/WO2014050472A1/ja not_active Ceased
- 2013-09-04 EP EP13840978.4A patent/EP2902669A1/en not_active Withdrawn
- 2013-09-04 KR KR1020157007243A patent/KR20150048793A/ko not_active Ceased
- 2013-09-04 CN CN201380049929.7A patent/CN104662338A/zh active Pending
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62160933A (ja) * | 1986-01-08 | 1987-07-16 | Fuji Heavy Ind Ltd | 車両用電磁式クラツチの制御装置 |
| JP2007012221A (ja) | 2005-07-04 | 2007-01-18 | Advantest Corp | 試験装置、及び製造方法 |
| JP2010242852A (ja) * | 2009-04-06 | 2010-10-28 | Honda Motor Co Ltd | 摩擦係合装置 |
| JP2012197851A (ja) * | 2011-03-22 | 2012-10-18 | Jatco Ltd | 多板式摩擦係合機構 |
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| CN104662338A (zh) | 2015-05-27 |
| KR20150048793A (ko) | 2015-05-07 |
| US20150252896A1 (en) | 2015-09-10 |
| JPWO2014050472A1 (ja) | 2016-08-22 |
| JP5844911B2 (ja) | 2016-01-20 |
| EP2902669A1 (en) | 2015-08-05 |
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