专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0740772A SPEED CHANGE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0740772A
公开(公告)日：1995-02-10
申请号：JP20451693
申请日：1993-07-27
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , OBA HIDEHIRO , HOJO YASUO , KIMURA HIROMICHI , KAIGAWA MASATO , HAMASHIMA TETSUO , FUKATSU AKIRA , ANDO MASAHIKO , YAMAMOTO YOSHIHISA
IPC分类号： B60W10/04 , B60W10/02 , B60W10/06 , B60W10/10 , B60W10/11 , F16H61/04 , F16H61/12 , F16H61/18 , F16H63/50 , B60K41/06
摘要： PURPOSE:To prevent a friction engaging means from juddering when a reverse range is selected by providing the speed change control device with a reverse step detection means detecting a reverse step command, an engine output increasing means increasing an engine output when the reverse step command is directed, and with a high speed step directing means switching an auxiliary transmission section over to high speed steps. CONSTITUTION:The speed change control device is provided with a reverse step detection means 3 detecting that a reverse step has been directed, an engine output increasing means 4 increasing an engine output when a reverse step is directed, and with a high speed step directing means 5 switching an auxiliary transmission section 1 over to high speed steps. When a reverse step is directed, it is detected by the reverse step detection means 5, and the engine output increasing means 4 allows the output of an engine E to be concurrently increased. And at the time when the output of the engine is equal to or more than a specified output, the auxiliary transmission section 1 is switched over to high speed steps by the high speed step directing means 5. Therefore even if a reverse step is directed in an advancing condition, torque trying to reversely rotate the output shaft of the auxiliary transmission section, is small, so that juddering will never take place.

2. 发明专利

JPH074510A HYDRAULIC CONTROLLER FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH074510A
公开(公告)日：1995-01-10
申请号：JP15622893
申请日：1993-06-02
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA , NIIMI MAMORU , IWATSUKI KUNIHIRO , OBA HIDEHIRO , KIMURA HIROMICHI
IPC分类号： F16H61/00 , F16H61/08
摘要： PURPOSE:To reduce speed change shock at the speed-change time when re- gripping operation is done with respect to the brace (or clutch). CONSTITUTION:At the time of speed change 2 3, a timing valve 21 operates such that supply pressure for a hydraulic servo B-2 acts on an oil chamber a1, release pressure from a hydraulic servo B-3 acts on an oil chamber c1, control pressure proportional to the input torque acts on a control oil chamber b1 from a near solenoid valve SLU, and the release pressure is adjusted by a pressure control port c2 according to the oil pressure corresponding to the input torque as the supply pressure rises. At this time, the supply pressure in an oil passage (n) acts on the pressure control port c2. through an orifice 33, oil passage (e), port e1, and n4, thereby compensation is made for the volume shortage of the release pressure.

3. 发明专利

JPH074504A ENGINE BRAKE CONTROLLER FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH074504A
公开(公告)日：1995-01-10
申请号：JP16967393
申请日：1993-06-16
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA , TSUBOI HARUMICHI , NIIMI MAMORU , IWATSUKI KUNIHIRO , KAIGAWA MASATO , OBA HIDEHIRO , HOJO YASUO , KIMURA HIROMICHI
IPC分类号： F16H61/00
摘要： PURPOSE:To zero the loss of the oil pressure by locking, when no brake pressure is necessary, the pressure control valve arranged to supply the brake pressure to a plurality of coast hydraulic servo mechanism. CONSTITUTION:The line pressure PL that has been supplied to a port p1 of the pressure control valve 21 is decreased in level and is outputted, as a brake pressure PB, from a port p2 and is supplied to a coast hydraulic servo mechanism through ports p3 and p5 of the relay valve 25. At this time, by changing the level of the oil pressure PSLN supplied to a port n3 of the pressure control valve 21, the level of the brake pressure PB outputted from the port p2 is controlled to an optimum value to each coast hydraulic servo mechanism When it is not necessary to control the brake pressure by the pressure control valve 21, the relay valve 25 is closed by the solenoid 27. Then, the line pressure PL is supplied as a back pressure to a spring chamber 21a of the pressure control valve 21 through the ports p2, p3, p4 and p6, and the pressure control valve 21 is fixed at a position where the discharge flowrate is zero, and the discharge port PE is closed, thereby zeroing the pressure loss resulting from unnecessary pressure control.

4. 发明专利

JPH06341540A SPEED CHANGE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06341540A
公开(公告)日：1994-12-13
申请号：JP15798793
申请日：1993-06-03
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , KAIGAWA MASATO , KIMURA HIROMICHI , OBA HIDEHIRO , HAMASHIMA TETSUO , YAMAMOTO YOSHIHISA , KUNO TAKAYUKI
IPC分类号： F16H61/12 , F16H61/16 , F16H63/50
摘要： PURPOSE:To previously prevent engine blow-up, etc., by inhibiting achievement of one speed change step when engine blow-up is generated though overlapping is done in up-shifting clutch-to-clutch speed change. CONSTITUTION:In an automatic transmission A for applying clutch-to-clutch speed change by releasing a first friction engaging device 1 and engaging a second friction engaging device 2, engaging oil pressure and drain oil pressure are controlled by means of an overlapping state means 4 to generate no blow-up increasing engine speed during clutch-to-clutch speed change. Abnormality is determined when an abnormal determining means 5 detects from the output from an engine speed detecting means 3 that the engine still has blow-up even if the overlapping state is increased to the maximum. In determining abnormality, clutch-to-clutch speed change is inhibited by means of a speed change step setting inhibiting means 6.

5. 发明专利

JPH06341538A SPEED CHANGE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06341538A
公开(公告)日：1994-12-13
申请号：JP15640093
申请日：1993-06-03
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA , SUZUKI AKITOMO , TABATA ATSUSHI , HOJO YASUO , KAIGAWA MASATO , OBA HIDEHIRO , KIMURA HIROMICHI , HAMASHIMA TETSUO
IPC分类号： F16H61/08 , F16H61/12
摘要： PURPOSE:To eliminate pressure relief of servo oil pressure from a friction engaging element in shifting up an automatic transmission and to prevent engine blow-up due to under lap in speed change. CONSTITUTION:A hydraulic control device has a B-3 control valve 24 juxtaposed with a creating oil pressure for a 2-3 shift valve 21 and a brake B-3, and a B-2 orifice control valve 25 juxtaposed with a connecting oil passage for the 2-3 shift valve 21 and a 6 brake B-2 and also provided in a pressure governing drain oil passage L7 for the B-3 control valve 24. In 2-3 shift, firstly, the B-3 control valve 24 is switched, forming a return intercommunicating state via the 2-3 shift valve 21, and a 2-3 timing valve 23. Oil pressure exhaust to the B-2 orifice control valve 25 for servo oil pressure exhausted from the B-3 brake is blocked. The B-2 orifice control valve 25 is then switched, preventing drain due to intercommunication at the switching transition of both the valves 24, 25.

6. 发明专利

JPH06331016A GEAR CHANGE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06331016A
公开(公告)日：1994-11-29
申请号：JP11957393
申请日：1993-05-21
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： KAIKAWA MASATO , KIMURA HIROMICHI , IWATSUKI KUNIHIRO , NIIMI MAMORU , ANDO MASAHIKO , YAMAMOTO YOSHIHISA , FUKATSU AKIRA
IPC分类号： F16H61/06
摘要： PURPOSE:To carry out down shift operation of clutch to clutch without causing gear change shock with a small time lug by maintaining oil pressure in the abrasion engaging device of an engaging side to a prescribed value in low pressure before input rotary speed of a transmission exceeds the synchronous point of a gear change step, and then boosting oil pressure thereof. CONSTITUTION:In the automatic transmission 2 of forward 5 steps and backward 1 step provided with a torque converter 111, a plural gear change part 112 and a main gear change part 113, transmission between a second speed step and a third speed step is set as clutch to clutch transmission of brakes B2 and B3, and each clutch and brake are engaged and disengaged through an oil pressure control device 20 by command of a computer 30. In this case, at the time of down shift of clutch to clutch, engaging pressure of the abrasion engaging device of an engaging side is maintained to a prescribed low pressure value after input rotary speed of a transmission exceeds the synchronous point of a gear change step, so that opening pressure in the abrasion engaging device of an opening side is maintained to a high pressure value. When input rotary speed of the transmission exceed the synchronous point of the gear change step, opening pressure is reduced while raising engaging pressure.

7. 发明专利

JPH06300126A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION OF VEHICLE 失效
公开(公告)号：JPH06300126A
公开(公告)日：1994-10-28
申请号：JP10751593
申请日：1993-04-09
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , KAIGAWA MASATO , KIMURA HIROMICHI , IWATSUKI KUNIHIRO , OBA HIDEHIRO , HOJO YASUO , NIIMI MAMORU , ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA
IPC分类号： F16H61/00 , F16H61/06
摘要： PURPOSE:To provide an oil pressure control device for the automatic transmission of a vehicle in which sufficiently long pressure-regulated draining period of a first hydraulic frictional engagement device can be obtained despite the fact that a common accumulator back-pressure control valve is used. CONSTITUTION:In the speed change from a second gear stage to third gear stage, an accumulator back-pressure PACC is applied to a first back-pressure chamber 94B1 of a B3 accumulator 94 and, in addition, a forward range pressure PD is applied to a second back-pressure chamber 94B2 of the B3 accumulator 94 through an oil path L06 which is branched from an oil path L03 located on the upstream side from a B2 orifice control valve 96. Accordingly the thrust of a piston 94P of the B3 accumulator 94 is increased remarkably as compared with that of a conventional device in which the accumulator back-pressure PAcc acts on the piston. As a result, a drain pressure at start of pressure reduction of a brake B3 is increased sufficiently. Thus, because the drain pressure PDB3 can be increased despite the fact that a common accumulator back-pressure control valve 102 is used, a sufficiently long pressure-regulate in draining period by 2-3 timing valve 98 can be obtained.

8. 发明专利

JPH06288470A HYDRAULIC CONTROL DEVICE FOR VEHICULAR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06288470A
公开(公告)日：1994-10-11
申请号：JP9875393
申请日：1993-03-31
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： KAIGAWA MASATO , IWATSUKI KUNIHIRO , OBA HIDEHIRO , KIMURA HIROMICHI , HOJO YASUO , TABATA ATSUSHI , ANDO MASAHIKO , NIIMI MAMORU , YAMAMOTO YOSHIHISA , FUKATSU AKIRA
IPC分类号： F16H61/00 , F16H61/06
摘要： PURPOSE:To reduce the number of valves and simplify a hydraulic circuit so as to heighten responsiveness by feeding output control pressure, outputted from an accumulator control valve, directly to a hydraulic actuator for driving a friction engaging device actuated at the engine brake action time, through a change-over valve. CONSTITUTION:At the shift time of an automatic transmission, output control pressure PACC outputted from an accumulator control valve 90 acts as back pressure to the back pressure chamber 106 of an accumulator 104. An electronic control device for speed change therefore controls the back pressure of the accumulator 104 by changing linear solenoid pressure PSLN so as to control the engaging torque of a brake BOa, a clutch C2a, and the like, thus making speed change smooth. At the engine brake travel time, the output control pressure PACC outputted from the accumulator control valve 90 is fed to a hydraulic actuator B1a for driving a brake actuated at the engine brake action time, through a change-over valve 100.

9. 发明专利

JPH06346962A SPEED CHANGE CONTROLLER OF VEHICULAR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06346962A
公开(公告)日：1994-12-20
申请号：JP16046593
申请日：1993-06-03
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： HAMASHIMA TETSUO , OBA HIDEHIRO , KIMURA HIROMICHI , ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA
IPC分类号： F16H61/06 , F16H61/08
摘要： PURPOSE:To prevent generation of blow-up of an engine even if speed change judgement that a speed change stage is changed into a second gear stage in the speed change process for establishing a first gear stage by providing a speed change control means for carrying out the clutch-to-clutch speed change after filling operating oil into an accumulator. CONSTITUTION:When the speed change output into the second gear stage from the first gear stage is output, the forward range pressure PD is supplied into an accumulator 94, and a brake B3 is engaged. When the speed change output into the third gear stage from the second gear stage is output, the forward range pressure PD is supplied into an accumulator 100, and a brake B2 is engaged. Simultaneously, operating oil of the brake B3 and the B3 accumulator 94 is drained, so as to release the brake B3. When the judgement of the speed change into the third gear stage is performed in the way of the formation of the second gear stage, operating oil is filled into the B3 accumulator 94, and then the pressure governing drain action by a 2-3 timing valve 98 is started.

10. 发明专利

JPH06341542A HYDRAULIC CONTROL DEVICE FOR VEHICULAR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06341542A
公开(公告)日：1994-12-13
申请号：JP15608193
申请日：1993-06-01
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , KAIGAWA MASATO , KIMURA HIROMICHI , FUKATSU AKIRA , ANDO MASAHIKO , YAMAMOTO YOSHIHISA
IPC分类号： F16H61/12 , F16H61/14 , F16H63/50
摘要： PURPOSE:To prevent a lock-up clutch from slip and to enhance durability by switching a lock-up clutch control valve to the release side and by retaining the said valve under a released state, using the actuation of an electromagnetic valve for accumulation back pressure control in detecting the abnormal lock-up clutch. CONSTITUTION:Provided in an abnormal detecting means 160 for detecting an abnormal state in which a lock-up clutch (LC) LC24 is located at an engaging side though a releasing instruction for releasing the LC24 is outputted when the output from an engine 10 is inputted to an automatic transmission 14 through a torque converter 12 with the lock up clutch (LC) 24, and transmission output is transferred to a driving wheel through a differential gear device. In detecting the abnormal LC, an electromagnetic valve for accumulation back pressure control (linear solenoid valve SLN) is actuated by means of a control means 162 and the automatic transmission 14 is switched to the fifth speed side. Thus, engaging pressure of a brake for transmission is generated to switch a lock up relay 98 to the releasing side, retaining LC24 under a released state.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式