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1. 发明专利

JP2004036674A Hydraulic control device for automatic transmission 有权
公开(公告)号：JP2004036674A
公开(公告)日：2004-02-05
申请号：JP2002191523
申请日：2002-06-28
申请人： Aisin Aw Co Ltd , Toyota Motor Corp , アイシン・エィ・ダブリュ株式会社 , トヨタ自動車株式会社
发明人： FUJIMINE TAKUYA , FUKATSU AKIRA , NODA KAZUYUKI , ANDO MASAHIKO , NOZAKI KAZUTOSHI , KANEDA TOSHIKI
IPC分类号： F16H61/00 , F16H61/12 , F16H61/21 , F16H61/68 , F16H61/684 , F16H61/686
CPC分类号： F16H61/12 , F16H61/686 , F16H2061/122 , F16H2061/1264
摘要： PROBLEM TO BE SOLVED: To provide a simply structured hydraulic control device of an automatic transmission capable of certainly blocking engagement pressure to a frictional engagement element such as a brake at a direct connection stage even when a fail occurs in a linear solenoid valve or the like. SOLUTION: The hydraulic control device 1 of the automatic transmission has a 3-4 shift valve 23 for outputting initial pressure of a first route at a third speed stage lower than a fourth speed stage directly connecting an input shaft 11 and an output shaft 15 of the automatic transmission and a clutch apply control valve 17 for outputting initial pressure of a second route at a fifth speed stage higher than the direct connection stage.Both valves 23 and 17 perform a control to block both initial pressures of the first and second routes at the direct connection stage. COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2002181173A HYDRAULIC CONTROLLER FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JP2002181173A
公开(公告)日：2002-06-26
申请号：JP2000378073
申请日：2000-12-12
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： FUJIMINE TAKUYA , NODA KAZUYUKI , FUKATSU AKIRA , ANDO MASAHIKO , OZAKI KAZUHISA , KANEDA TOSHIKI , KASHIWABARA YUJI
IPC分类号： F16H57/04 , F16H61/00
摘要： PROBLEM TO BE SOLVED: To provide a hydraulic controller of an automatic transmission capable of selecting oil passages for feeling the lubricant to a transmission gear mechanism corresponding to a necessary amount of the lubricant, and preventing the impairing of the driving force under a condition of a low temperature stopping of a car, and the shortage of the lubricant. SOLUTION: This hydraulic controller comprises oil passages for normal feed a, b, c, j communicated to a lubricant circuit 34 of a gear train part, and oil passages d, e, f, g, j for feeding the oil in need, communicated to the lubricant circuit 34 through 1-2 shift valve 24 and a solenoid relay valve 23, the oil feeding from the oil passages d, e, f, g, j is interrupted by the two valve when a desired amount of the lubricant is a little, for example, at a low temperature stopping the car, and the oil is fed in the other cases. Whereby the lowering of the driving force at the low temperature stopping the car, and the shortage of the lubricant during the traveling can be prevented.

3. 发明专利

JPH1019114A CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH1019114A
公开(公告)日：1998-01-23
申请号：JP18881796
申请日：1996-06-28
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： TABATA ATSUSHI , HOJO YASUO , ANDO MASAHIKO , YOKOYAMA FUMITOMO , OZAKI KAZUHISA , AZEYANAGI AKIHIRO , FUKATSU AKIRA
IPC分类号： F16H61/02 , F16H61/22
摘要： PROBLEM TO BE SOLVED: To prevent twisitng torque when a gear shifting is actuated to a P range from being accumulated, and delayed in response by controlling the releasing speed of a friction engaging device followed by gear shifting from a running range to a parking range P when engine revolutions are greater than a specified value in such a way as to be faster than that for engine revolutions less than the specified value. SOLUTION: In the electronic control device for an automatic transmission 10 to which the various kinds of data for control is inputted, it is judged whether or not a R range has been set, if it is found to have been set, subsequently, it is also judged whether or not engine revolutions are over a reference engine revolution, for example, 700rpm. And when it is found that engine revolutions are over 700rpm, and input torque is great, the back pressure of an accumulator for a second clutch is controlled so as to be low. This constitution thereby allows the torque capacity of the input clutch in the R range to be lowered, allows a torque transmitting route in the automatic transmission 1 to be temporarily in a neutral condition while a range is being changed from the R range to a parking P range, and thereby prevents twisting torque from remaining (being accumulated), and being delayed in response to the P range.

4. 发明专利

JPH0979361A HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0979361A
公开(公告)日：1997-03-25
申请号：JP25726895
申请日：1995-09-11
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： YOKOYAMA FUMITOMO , OZAKI KAZUHISA , FUKATSU AKIRA , MAE TOSHIYUKI , SAKAI MOTOYUKI , HIJIKATA MAKOTO , TAKAHASHI NOBUAKI , HAMASHIMA TETSUO , HOJO YASUO
IPC分类号： F16H61/00 , F16H61/04 , F16H63/02
摘要： PROBLEM TO BE SOLVED: To prevent inclination of a valve element without increasing the stem length of a valve and to improve responsiveness of a valve to a signal pressure. SOLUTION: A valve 25 is axially extended in such a state to surround the outer peripheral side of a spring 259, and comprises a guide part 252a to prevent inclination of a valve element 252 in such a way to make slide contact with a valve hole 32a; and a protrusion part 252b to improve pressure responsiveness by narrowing a signal pressure feed space in a valve chamber 33 protruding to the inner peripheral side of the spring 259. The protrusion part 252b has an axial length exceeding that of a guide part 252a. By making contact with the end face of the valve hole 32, the protrusion part is additionally functioned as a stopper to block the cutoff between a port 34 and the valve chamber 33 by the guide part 252a.

5. 发明专利

JPH08159262A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH08159262A
公开(公告)日：1996-06-21
申请号：JP32949394
申请日：1994-12-02
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： TSUKAMOTO KAZUMASA , ANDO MASAHIKO , FUKATSU AKIRA , MIKAMI TSUYOSHI , KAIGAWA MASATO , FUKUMURA KAGENORI , OBA HIDEHIRO , HOJO YASUO , TABATA ATSUSHI , TAKAHASHI NOBUAKI
IPC分类号： F16H61/00 , F16H61/06
摘要： PURPOSE: To feed an engaging pressure to a hydraulic servo, consisting of two friction engagement elements having different engaging pressures, with high pressure regulation precision by a single pressure regulating valve. CONSTITUTION: A hydraulic control device for an automatic transmission comprises a hydraulic source 10; hydraulic servoes 70 and 80; a signal pressure generating means 20, a pressure regulating valve 30 to regulate an oil pressure (PS) from an oil pressure source 10 by means of a signal pressure (PACC); and a switching valve 40. The pressure regulating valve 30 comprises a pressure receiving surface A1 on which a signal pressure is applied; a pressure receiving surface A2 which is positioned facing the aforesaid pressure receiving surface and feedback of an engaging pressure (PB) to which is executed; and a pressure receiving surface A3 to select whether feedback of an engaging pressure is effected to vary the control gain of the pressure regulating valve 30 according to switching of a switching valve 13 to select the hydraulic servoes 70 and 80 feeding to which is effected.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

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