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91. 发明专利

JPH08226535A CHANGE GEAR CONTROLLER OF AUTOMATIC TRANSMISSION FOR VEHICLE 失效
公开(公告)号：JPH08226535A
公开(公告)日：1996-09-03
申请号：JP3066895
申请日：1995-02-20
申请人： TOYOTA MOTOR CORP
发明人： TABATA ATSUSHI , TAKAHASHI NOBUAKI
IPC分类号： F16H61/08 , F16H59/24 , F16H59/36 , F16H59/44 , F16H61/00 , F16H61/02 , F16H61/06 , F16H61/16
摘要： PURPOSE: To perform change gear point study control which changes a change gear line stably in an automatic transmission in which clutch-to-clutch change gear is performed. CONSTITUTION: Whether overshoot amount ΔNEOV exceeds a predetermined value A or not is judged by a stop means 168. If it is judged that the overshoot amount exceeds the predetermined value, study control operation by means of a change gear point study control means 160 is stopped. For this reason, even if engine rotation speed is increased in a change gear response period due to the effect that release timing of a hydraulic friction engaging device on the release side is too early in clutch-to-clutch change gear and the effect of a drive control system of the hydraulic friction engaging device, the study control operation by the change gear point study control means 160 is stopped. Consequently, the change gear point study control means 160 which changes a change gear line can be operated stably without being affected by changes of engine rotation speed NE due to clutch-to-clutch change gear.

92. 发明专利

JPH08218909A CONTROL DEVICE FOR ENGINE AND AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH08218909A
公开(公告)日：1996-08-27
申请号：JP4484095
申请日：1995-02-09
申请人： TOYOTA MOTOR CORP
发明人： HAMASHIMA TETSUO , OBA HIDEHIRO , TAKAHASHI NOBUAKI
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , F02D29/00 , F02D41/04 , F16H59/14 , F16H61/04 , F16H63/50 , B60K41/04
摘要： PURPOSE: To reduce transmission shock by executing torque-down control based on shifting to a power-on state, completing the torque-down control after a specified time, and thereby properly executing the torque-down control even when the power-off state is switched to a power-on state on the way of transmission. CONSTITUTION: When a power-off state is shifted to a power-on state, it is sensed by means of a power-on sensing means 102. As a result, a torque-down command means 103 commands execution of reduction control of an engine torque. At the same time, time passage from the output of the command signal is counted by means of a counter means 104. When the time passage reaches a present value, a completion command means 105 commands completion of reduction control of the torque based on the command of the torque-down command means 103. When shifting to the power-on state is conducted on the way of transmission, accordingly, shock due to transmission in the power-on state is prevented with certainty.

93. 发明专利

JPH08159265A OIL PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH08159265A
公开(公告)日：1996-06-21
申请号：JP32949294
申请日：1994-12-02
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： TSUKAMOTO KAZUMASA , ANDO MASAHIKO , FUKATSU AKIRA , SAKAI MOTOYUKI , KAIGAWA MASATO , FUKUMURA KAGENORI , OBA HIDEHIRO , HOJO YASUO , TABATA ATSUSHI , TAKAHASHI NOBUAKI
IPC分类号： F16H61/08 , F16H61/02
摘要： PURPOSE: To reduce the occurrence of disturbance during regulation of pressure for the grip change shift of a frictional engagement element and to control a release pressure without a replay delay. CONSTITUTION: A shift is effected through grip change of a frictional engagement element, and an oil pressure control device for an automatic transmission comprises hydraulic servoes 29 and 28, a switching valve 22; a signal pressure generating means; and a pressure regulating valve 25 to regulate a feed pressure to the hydraulic servo 28. The pressure regulating valve 25 comprises a first valve body 253 to receive a signal pressure PSLU and the feedback pressure of the release pressure of the hydraulic servo 28; and a second valve body 252 to receive the engagement pressure of the hydraulic servo 29, and the second valve body 252 is always energized for contact with the first valve body by an energizing means 259.

94. 发明专利

JPH0218122A CONTROL OF TORQUE DISTRIBUTION CONTROL CLUTCH FOR FRONT/ REAR WHEEL DRIVE CAR 失效
公开(公告)号：JPH0218122A
公开(公告)日：1990-01-22
申请号：JP16946388
申请日：1988-07-07
申请人： TOYOTA MOTOR CORP
发明人： NISHIKAWA SEIICHI , FUKUMURA KAGENORI , TAKAHASHI NOBUAKI
IPC分类号： B60K17/35 , B60K17/346
摘要： PURPOSE:To eliminate uncomfortable riding feeling when the change occurs in behavior of a driving car, by suppressing the change in engagement of a torque distribution control clutch, when a certain condition is satisfied for the driving car. CONSTITUTION:For a four-wheel drive car, after the output of an engine 10 is transmitted to an automatic speed changer 14 through a clutch 12, it is divided into two at a center differential device 20, and is transmitted to front/ rear wheels 24, 28 through differential devices for front/rear wheels 22, 26, respectively. A differential control clutch 82 is arranged as a torque distribution control clutch between input/output members 32 and 44 of the center differential device 20. The differential control clutch 82 performs control by an electronic control device 86 through a clutch hydraulic control circuit 84, based on the driving state of the car that is detected at each sensors from 100 to 118. When the driving state satisfies a certain condition, the change in engagement is thus suppressed.

95. 发明专利

JPS62258251A CONTROL DEVICE FOR AUTOMATIC TRANSMISSION FOR VEHICLE 失效
公开(公告)号：JPS62258251A
公开(公告)日：1987-11-10
申请号：JP10228186
申请日：1986-04-30
申请人： TOYOTA MOTOR CORP
发明人： TAKAHASHI NOBUAKI , YASUE HIDEKI
IPC分类号： F16H61/04 , F16H61/10
摘要： PURPOSE:To reduce the speed change shock and improve the durability, by determining a condition of a frictional engaging member by means for detecting a drive hysteresis of a vehicle, and controlling a control oil pressure according to the determined condition. CONSTITUTION:A drive hysteresis detecting means F detects whether or not vehicle running is in an initial state, and determines a coefficient of friction of a frictional engaging member according to the detection result. Then, a speed change pattern in a control means E is changed according to the result of determination by a speed change pattern changing means G. Accordingly, at the initial state of running of the vehicle, the speed change is carried out at a vehicle speed lower than a normal speed, and a speed changing time is not increased. Further, even if the coefficient of friction of the frictional engaging member is varied, the speed changing time is made proper, thus avoiding a reduction in durability and an increase in speed change shock.

96. 发明专利

JPS62171528A OIL PATH STRUCTURE OF HYDRAULIC CLUTCH OF SPEED CHANGE GEAR 失效
公开(公告)号：JPS62171528A
公开(公告)日：1987-07-28
申请号：JP1261386
申请日：1986-01-23
申请人： TOYOTA MOTOR CORP
发明人： YASUE HIDEKI , FUKUMURA KAGENORI , TAKAHASHI NOBUAKI , KURAMOCHI KOJIRO
IPC分类号： F16D25/063 , F16H61/02 , F16H63/46
摘要： PURPOSE:To prevent oil in an oil chamber from getting out during idling by providing a pressure response valve adapted to open when negative pressure larger than a designated value is generated in an oil path communicating with an oil chamber of a hydraulic clutch. CONSTITUTION:An oil chamber 16 of a forward clutch 13 is provided with a check valve 23 adapted to leave the oil chamber open directly in the air with a lowering of oil pressure in the oil chamber 16. Oil paths 25-33 communicating with the oil chamber 16 are provided with a check valve 34 as a pressure response valve, which is opened to leave the oil paths open in the air only when negative pressure larger than a designated value is generated in the oil paths. Accordingly, during idling, negative pressure larger than a designated value is not generated in the oil paths 25-33, so that the check valve 34 will not open to avoid oil pressure in the oil chamber 16 from getting out and accomplish switch in from N-range to D-range by manual shifting with good responsibility.

97. 发明专利

JP2010261508A Oil pump hydraulic circuit 审中-公开
标题翻译：油泵液压回路
公开(公告)号：JP2010261508A
公开(公告)日：2010-11-18
申请号：JP2009112865
申请日：2009-05-07
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： TAKAHASHI NOBUAKI , MATSUO KENJI , NISHIDA TADASHI
IPC分类号： F16H57/04 , F16H59/68 , F16H59/72 , F16H61/00
摘要： PROBLEM TO BE SOLVED: To prevent oil with air sucked from being circulated in a path including a hydraulic operation section, in an oil pump hydraulic circuit including a main pump and a sub-pump which are juxtaposed to each other and supplying oil to the hydraulic operation section or the like.
SOLUTION: Since oil returned from a cooler bypass circulation passage 40 through a cooler bypass valve 38 opened when a temperature is lowered is returned to an oil passage 12a from which only the sub-pump 12 can perform suction, a possibility that oil with air mixed is made to flow into a lock-up main oil passage 10e is considerably low. Even if the oil is made to flow into the lock-up main oil passage 10e from the other route, when the oil flows through a lubricating element 32, air is separated from the oil when the oil is returned to an oil pan 18. Therefore, oil with air mixed is prevented from being circulated through a torque converter 2 including a lock-up clutch 4, and the torque converter 2 does not cause a malfunction.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了防止吸入空气的油在包括液压操作部的路径中循环，在包括主泵和副泵的油泵液压回路中并排并供给油到液压操作部等。解决方案：当温度降低时从冷却器旁通循环通道40返回的冷却器旁通阀38返回到仅通过副泵12可以进行抽吸的油通道12a，油可能性使混合空气流入锁定主油路10e的速度相当低。即使油从另一路径流入锁闭主油路10e，当油流过润滑元件32时，当油返回到油盘18时，空气与油分离。因此，通过包括锁止离合器4的变矩器2防止混入空气的油循环，并且变矩器2不会引起故障。版权所有（C）2011，JPO＆INPIT

98. 发明专利

JPH1137267A HYDRAULIC PRESSURE CONTROL DEVICE OF VEHICULAR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH1137267A
公开(公告)日：1999-02-12
申请号：JP19607797
申请日：1997-07-22
申请人： TOYOTA MOTOR CORP
发明人： TAKAHASHI NOBUAKI , KONDO MASAMITSU , NAKAMURA HIROYA
IPC分类号： F16H61/06
摘要： PROBLEM TO BE SOLVED: To prevent repeated generation of an overshoot by judging whether a learning correction by a released side oil pressure learning control means is prohibited, based on the running state before the generation of an overshoot, on the prescribed running state such as a throttle valve opening. SOLUTION: During vehicular running, in a learning propriety judging means 164, whether a learning correction is carried out by a released side oil pressure learning control means 162 is judged by whether a vehicular running state satisfies a prescribed learning allowable condition. Thereby, the learning correction based on the overshoot amount ΔNE of an engine rotation speed changed by a factor except a precribed timing in a clutch-to-clutch (2→3) speed change term is avoided. The released side oil pressure learning control means 162 corrects the oil pressure in a brake by learning so that the overshoot amount ΔNE is within a prescribed target range, when the throttle valve opening satisfies a prescribed learning allowable condition such as nearly constant.

99. 发明专利

JPH1137264A HYDRAULIC PRESSURE CONTROL DEVICE OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH1137264A
公开(公告)日：1999-02-12
申请号：JP20859597
申请日：1997-07-17
申请人： TOYOTA MOTOR CORP
发明人： TAKAHASHI NOBUAKI , NAKAMURA HIROYA , FUKUMURA KAGENORI
IPC分类号： F16H61/04
摘要： PROBLEM TO BE SOLVED: To control speed change with no speed change shock and delay of speed change by controlling the hydraulic pressure at the speed change time, based on the amount related to an input torque detected before speed change when the speed change is detected. SOLUTION: At the speed change operation time, in a computer 30 for automatic speed change control, an engine torque deviation ΔTE is compared with a standard value A for a prescribed time from this point of time. This standard value A divides ΔTE to plural areas and a correction value is set per respective areas and it is judged whether ΔTE before a prescribed time from a speed change output is bigger than the standard value A. Here, YES is judged, the biggest value α out of the advancely set value is adopted as the correction value of a duty ratio. While, when ΔTE is below the standard value A, it is judged whether ΔTE is bigger than the other standard value B and when YES is judged, a smaller value β than the value α is adopted as the correction value of the duty ratio and the correction amount for reducing the oil pressure of a friction engagement device is minified.

100. 发明专利

JPH10184869A GEAR CHANGE CONTROL UNIT OF AUTOMATIC TRANSMISSION FOR VEHICLE 失效
公开(公告)号：JPH10184869A
公开(公告)日：1998-07-14
申请号：JP34750296
申请日：1996-12-26
申请人： TOYOTA MOTOR CORP
发明人： OISHI TOSHIYA , TAKAHASHI NOBUAKI , NAKAMURA HIROYA
IPC分类号： F16H61/00 , F16H61/06
摘要： PROBLEM TO BE SOLVED: To prevent the multiple gear change by preventing the gear change to a B shift stage, and substantially performing A→C gear change, by performing the gear change from the B shift stage to a C shift stage while limiting the oil pressure of a frictional engagement unit by less than a prescribed value, when the command for the gear change to the C shift stage is output during the gear change from an A shift stage to the B shift stage. SOLUTION: When a 1→2 gear change (A-B gear change) command is output, whether the command of gear change to the third shift stage (C speed) is output or not, is judged in ECU for speed change 78, so that the exciting condition of the electromagnetic valves S1-S3 is switched to obtain the second shift stage, when the judgement is NO, and a corresponding brake B3 is engaged by controlling the oil pressure of a linear solenoid value SLU. On the other hand, when the judgement is YES, the ordinary 2→3 gear change is executed when an accelerating pedal 50 is not stopped on, but when the accelerating pedal 50 is stopped on, the oil pressure of the brake B3 is limited to be less than the comparatively low certain oil pressure free from the engagement of the brake B3, and the 2→3 gear change is executed.

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