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1. 发明专利

JPH05302662A 失效
公开(公告)号：JPH05302662A
公开(公告)日：1993-11-16
申请号：JP10663792
申请日：1992-04-24
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： MOROTO SHUZO , INUZUKA TAKESHI , HATTORI MASASHI , TAGA YUTAKA , HOJO YASUO , TABATA ATSUSHI , OKADA TAKAYUKI
IPC分类号： F16H61/00 , F16H61/02 , F16H61/08
摘要： PURPOSE:To pysically sense a torque change sufficiently by providing a hydraulic circuit to attain respective speed change stages by means of speed change output signals of a control device and a regulating means to make a speed change response in the case of manual speed change larger than in the case of automatic speed change. CONSTITUTION:Though a hydraulic circuit to operate a transmission is used in the same as usual, in order to prevent a speed change shock in the case of speed change, a delay angle quantity is set, and the ignition timing is delayed, and engine torque is reduced. In the case of manual speed change mode, a speed change control device 31 judges that torque reduction control is required in the case of speed change transitional time. The torque reduction control is carried out by reducing the delay angle quantity sent to an engine control device through a torque reduction input/output processing circuit of a driving circuit 39. Thereby, since the delay angle quantity of an engine is reduced and the engine torque is increased, a speed change response caused by engagement with frictional engaging elements can be made large, so that a torque change can physically sensed.

2. 发明专利

JPH05164237A AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH05164237A
公开(公告)日：1993-06-29
申请号：JP33489491
申请日：1991-12-18
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： MOROTO SHUZO , INUZUKA TAKESHI , HATTORI MASASHI , TAGA YUTAKA , HOJO YASUO , TABATA ATSUSHI , OKADA TAKAYUKI
IPC分类号： F16H61/08 , F16H59/02 , F16H59/10 , F16H59/18 , F16H59/22 , F16H59/24 , F16H59/42 , F16H59/44 , F16H59/54 , F16H59/72 , F16H61/00
摘要： PURPOSE:To eliminate a difference or the like between a driver's expected shift stage and an actually attained shift stage by measuring the time for a shift lever to be at the neutral position in a manual gear shift mode, and applying such a means as attaining a forward travel range when the measured time exceeds the prescribed value. CONSTITUTION:In this automatic transmission, a shift lever is moved over the range of a shift pattern comprising a range position for an automatic gear change mode, a shift position for a manual gear shift mode, and neutral positions for respective types of mode. In this case, a sensor or the like 37 detects that the shift lever is moved to each position. Also, a control device 31 outputs a gear change signal, according to a range and a gear selected with the shift lever. Furthermore, an actuator 40 is driven to attain each gear, according to the gear change signal. On the other hand, a timer measures a time for the shift lever to stay at a neutral position in the manual gear shift mode. Also, the gear selected immediately before is maintained until the measured time exceeds the prescribed value, and a forward travel range is attained when the prescribed value is exceeded.

3. 发明专利

JPH0560208A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0560208A
公开(公告)日：1993-03-09
申请号：JP24039391
申请日：1991-08-27
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/00 , F16H61/12 , F16H61/21
摘要： PURPOSE:To surely make an engine brake effective at a gear shift stage where the engine brake is required. CONSTITUTION:A check ball valve 700 is arranged so as to bypass a coast brake cut-off valve 500, which is controlled by a third solenoid valve S3 to selectively supply D range pressure to a third brake B3, so that L range pressure may be supplied to the third brake B3 via this check ball valve 700. Even when a failure is caused in the third solenoid valve S3 and the coast brake cut-off valve 500, the third brake B3 is surely engaged to enhance its durability.

4. 发明专利

JPH062762A SPEED CHANGE CONTROLLER FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH062762A
公开(公告)日：1994-01-11
申请号：JP16124192
申请日：1992-06-19
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/06
摘要： PURPOSE:To improve the shift feeling in the case where the manaul speed change mode is selected (improve the speed change responsiveness without increasing the speed change shock). CONSTITUTION:As for the speed change controller for an automatic transmission for carrying out speed change by controlling the supply and discharge of the engagement pressure for a frictional engagement device, the engagement pressure supplied to the frictional engagement device is made larger than a stationary pressure (Step 510), by increasing the line pressure, when up-shift in a direct shift mode is judged (in case of YES in Step 506 and 508). If the start of inertia phase is confirmed (Step 518) or the pressure increase time of the line pressure exceeds a prescribed time (Step 520) even if the start of inertia phase is not comfirmed, the increase of the line pressure is suspended, and the return to the original stationary pressure is performed (Step 522).

5. 发明专利

JPH0565953A CONTROLLER OF AUTOMATIC TRANSMISSION CAPABLE OF SELECTING MANUAL MODE 失效
公开(公告)号：JPH0565953A
公开(公告)日：1993-03-19
申请号：JP25456491
申请日：1991-09-06
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , TAGA YUTAKA , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/00 , F16H61/02
摘要： PURPOSE:To improve the accelerability at a manual mode. CONSTITUTION:A shift mode being selected by a shift unit 10 is judged by a mode judging means 11, and when a fact that an auto mode is judged is judged, a shift command means 12 selects a shift step out of a first shift step line consisting of plural shift steps selected out of settable shift steps on the basis of a travel state and set up. When a fact that a manual mode is selected is judged, a shift step out of a second shift step line consisting of other plural shift steps selected from the settable shift steps is selected on the basis of the said manual operation and set up as well. Accordingly, the second shift step line is set to such a value as large in a transmission gear ratio in a minimum speed in relation to the first shift step line.

6. 发明专利

JPH0560214A CONTROL DEVICE FOR VEHICULAR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0560214A
公开(公告)日：1993-03-09
申请号：JP24833091
申请日：1991-09-02
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , TAGA YUTAKA , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/00 , F16H59/58 , F16H61/02 , F16H61/06 , F16H61/18
摘要： PURPOSE:To avoid an abrupt engine brake at the time of turning so as to enhance a riding comfort. CONSTITUTION:This device is provided with a friction engagement device 1 for an engine brake to be engaged at a predetermined low speed stage for making the engine brake effective, and a pressure regulating mechanism 2 for regulating oil pressure supplied to the friction engagement device 1 for the engine brake. The device is also provided with a speed change judging means 3 for deciding a speed change to the low speed stage for making the engine brake effective, and a turning detecting means 4 for detecting vehicle turning. The device is further provided with an oil pressure adjusting means 5 for controlling the oil pressure regulating mechanism 2 to decrease a change rate of oil pressure supplied to the friction engagement device 1 for the engine brake to a value lower than that at the time of non-turning of a vehicle. when the speed change judging means 3 decides a speed change to the low speed stage for making the engine brake effective and also the turning detecting means 4 detects vehicle turning.

7. 发明专利

JPH0560210A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0560210A
公开(公告)日：1993-03-09
申请号：JP24497291
申请日：1991-08-30
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/00 , F16H61/12 , F16H61/21
摘要： PURPOSE:To enhance durability of a friction engagement device for an engine brake. CONSTITUTION:Constitution is made so that a coast brake cut-off valve 500 for controlling supply/discharge of oil pressure for friction engagement devices B1, B3 for an engine brake may be controlled by a solenoid valve SL, a third solenoid valve S3. L range pressure and oil pressure of a second brake B2, and oil pressure is supplied to a friction engagement device B1 or B3 for an engine brake at a first speed and a second speed in a manual mode and an L range, and a second speed in an S range.

8. 发明专利

JPH0560209A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0560209A
公开(公告)日：1993-03-09
申请号：JP24497191
申请日：1991-08-30
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , TAGA YUTAKA , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/00 , F16H61/02 , F16H61/12 , F16H61/21
摘要： PURPOSE:To surely engage a friction engagement device for an engine brake at a predetermined engine brake range as well as at a predetermined speed reducing stage. CONSTITUTION:L range pressure and S range pressure at a second speed in the S range are selectively applied via a check valve 600 to a coast brake cut-off valve 500 which controls supply/discharge of oil pressure for friction engagement devices B1, B3 for an engine brake. A state wherein oil pressure is supplied to the friction engagement devices B1, B3 for an engine brake is retained irrespective of presence of a failure in a third solenoid valve S3.

9. 发明专利

JPH05322022A SHIFT CONTROL UNIT FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH05322022A
公开(公告)日：1993-12-07
申请号：JP15296192
申请日：1992-05-20
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H61/06 , F16H61/02 , F16H61/08 , F16H61/10
摘要： PURPOSE:To prevent shift response lag in a manual shift mode. CONSTITUTION:A shift control unit for an automatic transmission A is provided with a shift mechanism 1 selecting a manual shift mode which directs shift according to an upshift signal or a downshift signal with a manual operation, or an automatic gear shift mode which outputs a shift signal based on a running state and a transient oil pressure control means 3 which feedback controls a transient state of engaged oil pressure, which is supplied to or drained from a frictional engagement device 2 at shifting, so that the shift transient state meets the conditions preset beforehand. And the unit is also provided with a manual shift mode detection means 4 detecting whether the manual shift mode is selected and a feedback control inhibition means 5 inhibiting feedback control of the transient state of the engaged oil pressure in the case of detecting that the manual shift mode is selected.

10. 发明专利

JPH05306766A 失效
公开(公告)号：JPH05306766A
公开(公告)日：1993-11-19
申请号：JP13595692
申请日：1992-04-28
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , OKADA TAKAYUKI , INUZUKA TAKESHI , HATTORI MASASHI
IPC分类号： F16H59/02 , F16H61/12 , F16H61/21
摘要： PURPOSE:To surely detect fail in the output system of upshift and downshift signals in a manual speed change mode. CONSTITUTION:The speed change controller for an automatic transmission A can select a manual speed change mode in which speed change is indicated by an upshift signal or a downshift signal given through manual operation, and has an upshift switch 1 to output the upshift signal, a downshift switch 2 to output the downshift signal, an upshift counter 3 to count the outputting duration of the upshift signal, and a downshift counter 4 to count the outputting duration of the downshift signal, and moreover has a fail judging means 5 to judge to be the occurrence of fail in the case where the counted values given by the counters 3, 4 simultaneously exceed each predetermined value.

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