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81. 发明专利

JPH09137862A CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH09137862A
公开(公告)日：1997-05-27
申请号：JP31860895
申请日：1995-11-13
申请人： TOYOTA MOTOR CORP
发明人： TAKANAMI YOJI , IWATSUKI KUNIHIRO
IPC分类号： F16H61/10 , F16H61/18
摘要： PROBLEM TO BE SOLVED: To prevent the shock at the high output in the condition in which the snow mode is selected in an automatic transmission for a vehicle. SOLUTION: A control device of an automatic transmission capable of selecting the traveling mode in which the shift position is judged based on the traveling condition of a vehicle, the prescribed lower speed side shift position is prohibited, and other shift position on the high speed side is set in place of the shift position on the lower speed side, is provided with a means (step 1) to detect that the traveling mode is selected, a means (step 3) to detect the throttle opening, and a means (step 4) to set the shift position on the lower speed side according to the traveling condition and driving condition of the vehicle when the throttle opening is not less than the preset prescribed value in the condition in which the traveling mode is selected.

82. 发明专利

JPH0960719A CONTROL DEVICE FOR VEHICULAR DIRECT-COUPLED CLUTCH 失效
公开(公告)号：JPH0960719A
公开(公告)日：1997-03-04
申请号：JP21601695
申请日：1995-08-24
申请人： TOYOTA MOTOR CORP
发明人： MATSUBARA TORU , IWATSUKI KUNIHIRO
IPC分类号： F16H61/14
摘要： PROBLEM TO BE SOLVED: To prevent a sensor of incongruity and a temporary increase in engine revolution speed from taking place even if slip control is executed so as to be started in the middle of gear shifting by executing transient slip control for transferring a slip control means to the usual slip control after it is judged that gear shifting by an automatic transmission has been over. SOLUTION: When it is judged by a slip control condition judging means 194 that a slip control condition can be established in any gear step after gear shifting has been actuated, a slip control switch-over means 200 allows a slip control means 192 to start slip control during gear shifting, after an inertial phase has been judged by an inertial phase judging means 196. And after it is judged by a gear shifting completion judging means 198 that gear shifting by an automatic transmission has been over, transient slip control is executed for transferring the slip control means 192 to the usual slip control. By this constitution, a sense of incongruity and an temporary increase in engine revolution speed can be prevented from taking place even if slip control is started in the middle of gear shifting.

83. 发明专利

JPH07309159A CONTROL DEVICE OF ENGINE AND AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH07309159A
公开(公告)日：1995-11-28
申请号：JP12833994
申请日：1994-05-18
申请人： TOYOTA MOTOR CORP
发明人： MATSUBARA TORU , IWATSUKI KUNIHIRO
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , B60W10/11 , F02D29/00 , F16H61/00 , F16H63/50 , B60K41/06
摘要： PURPOSE:To carry out the starting in the condition to prohibit the gear stage of the maximum change gear ratio, by outputting an instruction signal to increase the engine output to a control means depending on the detecting signal of a prohibition detecting means of an automatic change gear which has a means to prohibit the ahead stage of the maximum change gear ratio. CONSTITUTION:The output of an engine 2 is controlled electrically through an output control means 1. And by operating a lowest speed prohibiting means 3, the setting of an ahead stage of the maximum change gear ratio is prohibited, even though it is the starting from the stopping condition, and as a result, a small change gear ratio of stage is set. This setting is instructed to the output control means 1 by an engine output increase instruction means 6 depending on the detecting signal from a lowest stage prohibition detecting means 5, so as to increase the engine output. In order to start at a change gear stage whose change gear ratio is smaller than the lowest speed stage, the starting operation is simplified by only stepping a little on an accelerator pedal, or only by releasing the braking.

84. 发明专利

JPH07248057A GEAR SHIFT CONTROL DEVICE OF AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH07248057A
公开(公告)日：1995-09-26
申请号：JP6655994
申请日：1994-03-10
申请人： TOYOTA MOTOR CORP
发明人： NOZAKI YOSHINOBU , IWATSUKI KUNIHIRO
IPC分类号： F16H61/04 , F16H61/10
摘要： PURPOSE:To prevent the gear shift shock accompanying a gear shift from idling state to accelerator-on, and attain a gear shift according to the intention of a driver. CONSTITUTION:This device has an accelerator-on detecting means 2 for detecting that throttle opening is enhanced after idling state where downshift line is moved on high vehicle speed side; a downshift line returning means 3 for returning the downshift line moved on high vehicle speed side to low vehicle speed side according to the enhancement of the throttle opening; and a gear shift judging means 4 for judging upshift in the state where the downshift line is returned to the tow vehicle speed side. Further, it has a gear shift progress judging means 5 for judging the progress of upshift, and a downshift line changing means 6 for moving the downshift line on at least either one of high throttle opening side or low vehicle speed side when the progress of upshift judged by the gear shift progress judging means 5 exceeds a predetermined state.

85. 发明专利

JPH07247874A CONTROL DEVICE FOR ENGINE AND AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH07247874A
公开(公告)日：1995-09-26
申请号：JP5985094
申请日：1994-03-07
申请人： TOYOTA MOTOR CORP
发明人： SHIIBA KAZUYUKI , IWATSUKI KUNIHIRO , NOZAKI YOSHINOBU
IPC分类号： B60W10/04 , B60W10/06 , B60W10/10 , F02D17/02 , F02D29/00 , F02D41/04 , B60K41/04
摘要： PURPOSE:To perform execution in a short time without generating the shock of power off down shift by a method wherein when, with an accelerator fully closed, a down shift to a speed at which engine brake is rendered effective is effected, an intake air amount is increased before a speed change is started and simultaneously with the start of a speed change, return of fuel cut is controlled. CONSTITUTION:In an engine 3, when running is effected at a car speed higher than a given speed in a state that a throttle valve 1 is closed, the feed of fuel is suspended and air intake is effected by an intake air control means 2 so that the number of idle revolutions is maintained. Further, an automatic transmission 4 coupled to an engine 3 sets a speed at which engine brake is rendered effective, i.e., a speed at which coast torque is transmitted to an engine 3. When, with the throttle valve 1 closed, a down shift to the speed is decided by a speed change deciding means 5, an intake air amount by an intake air control means 2 is increased by a command from an intake air increase indicating means 6 in prior to the start of a speed change.

86. 发明专利

JPH0771594A CONTROL DEVICE OF LOCK UP CLUTCH FOR VEHICLE 失效
公开(公告)号：JPH0771594A
公开(公告)日：1995-03-17
申请号：JP22102193
申请日：1993-09-06
申请人： TOYOTA MOTOR CORP
发明人： MATSUBARA TORU , IWATSUKI KUNIHIRO , ANDO YASUSHI
IPC分类号： F16H59/34 , F16H61/14
摘要： PURPOSE:To provide a control device of a lock up clutch for a vehicle without returning fuel shutoff work even when shutoff of fuel by a fuel cut control means is carried out during slip control at the time of coasting traveling of the vehicle. CONSTITUTION:By an engine speed change rate detection means 204, a rate of change dNe/dt of engine speed Ne during decelerating slip control is detected. Although this rate of change dNe/dt of the engine speed Ne is initially made negative by the decelerating slip control, within the period of time it reaches zero, a control variable ISLU of the decelerating slip control is changed to the side where a slip amount of the lock-up clutch 32 is decreased, that is, to the increased control variable extending side. Consequently, as dropping of the engine speed Ne is restrained, even when fuel shutoff is started during the decelerating slip control of coasting traveling, it is possible to most favorably eliminate a case that the engine speed Ne becomes lower than fuel cut rotating speed NCUL and fuel supply shutoff work by fuel cut control is returned.

87. 发明专利

JPH0754976A SHIFT TIMING SENSING DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0754976A
公开(公告)日：1995-02-28
申请号：JP22059993
申请日：1993-08-12
申请人： TOYOTA MOTOR CORP
发明人： NOZAKI KAZUTOSHI , IWATSUKI KUNIHIRO , OBA HIDEHIRO , NOZAKI YOSHINOBU , HAMASHIMA TETSUO
IPC分类号： F16H59/68 , F16H59/40 , F16H59/70 , F16H61/08
摘要： PURPOSE:To make precise judgement without lag in the start of shifting in the torque phase by subjecting the minute change amount of the output revolving speed resulting from variation in the output torque after issue of a shift command to a processing using different factor, comparing the two values obtained, and judging the start of the shift. CONSTITUTION:A shift timing sensing device of an automatic transmission A senses the start of the shift on the basis of the variation of the revolving speed of a rotary member 1 after the issue of a shift command, and a sensing means 2 senses the change amount of the output revolving speed of the transmission A. The change amount obtained is subjected to a numerical processing using different factors by a numerical processing means 3, and two processing values are determined, and they are compared by a comparing means 4. According to the result from comparing, the start of shifting is judged by a shift start judging means 5. Thereby the start of the shift is judged which reflects the rotational variation in a minute time of the output revolving speed, and it is practicable to conduct precisely sensing the start of the shifting associate with engagement of a one-way clutch at the on-down time or the start of torque phase at the on-up time without generation of time lag.

88. 发明专利

JPH0727220A AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH0727220A
公开(公告)日：1995-01-27
申请号：JP17022993
申请日：1993-07-09
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： HATTORI MASASHI , INUZUKA TAKESHI , KASUGA SHINJI , HOJO YASUO , IWATSUKI KUNIHIRO
IPC分类号： F16H59/24 , F16H59/44 , F16H61/14
摘要： PURPOSE:To provide an automatic transmission in which a lock-up clutch is not locked up to cause generation of shock when a car runs with a specified gear. CONSTITUTION:A lock-up clutch 15 is arranged on a fluid transmission device 11. A lock-up output generation means 89 of a control device 31 sets ON the lock-up output and locks up the lock-up clutch 15. The control device 31 performs lock-up judgment so that a lock-up diagram 84 is formed. It is judged whether or not vehicle speed and a throttle opening are in an ON-OFF hystersis area in the lock-up diagram 84 by means of a comparator 87. A lock-up output generation means 89 sets ON the lock-up output in the case that the vehicle speed and the throttle opening are in the ON-OFF hystersis area at the generation time of transmission output.

89. 发明专利

JPH06341541A HYDRAULIC CONTROL DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06341541A
公开(公告)日：1994-12-13
申请号：JP15639793
申请日：1993-06-03
申请人： AISIN AW CO , TOYOTA MOTOR CORP
发明人： IWATSUKI KUNIHIRO , ANDO MASAHIKO , FUKATSU AKIRA , YAMAMOTO YOSHIHISA , TSUBOI HARUMICHI , NIIMI MAMORU , KAIGAWA MASATO , OBA HIDEHIRO , HOJO YASUO , KIMURA HIROMICHI , HAMASHIMA TETSUO
IPC分类号： F16H61/14 , F16H61/00
摘要： PURPOSE:To enable lock-up from the third transmission while sharing the linear solenoid valve of an hydraulic control device in an automatic transmission between 2-3 transmission control and lock-up control. CONSTITUTION:A hydraulic control device has a shift valve for switching the supply of oil pressure to two friction locking elects, a timing valve for controlling the supply and exhaust of the oil pressure of both the friction locking elements, a lock up control means 22 for locking a close coupled clutch, and a solenoid relay valve 23 for switching and applying signal oil pressure pressure- governed by a linear solenoid valve SLU to the timing valve and the lock up control means 22. The solenoid relay valve 23 is connected to the locking pressure oil passage L31 of the second friction locking element to form locking oil pressure PA generated by the supply of oil pressure to the second friction locking element into a switching signal.

90. 发明专利

JPH06280978A TIE-UP JUDGING DEVICE FOR AUTOMATIC TRANSMISSION 失效
公开(公告)号：JPH06280978A
公开(公告)日：1994-10-07
申请号：JP6576393
申请日：1993-03-25
申请人： TOYOTA MOTOR CORP , AISIN AW CO
发明人： KAIGAWA MASATO , IWATSUKI KUNIHIRO , KIMURA HIROMICHI , TABATA ATSUSHI , HOJO YASUO , HAMASHIMA TETSUO , NIIMI MAMORU , ANDO MASAHIKO , YAMAMOTO YOSHIHISA , FUKATSU AKIRA
IPC分类号： F16H61/00 , F16H61/21
摘要： PURPOSE:To make clutch-to-clutch shifting-up smoothly with a small shift shock by judging the tie-up from the relationship between the angular acceleration ratio of the rotary part during the shift and the ideal output shaft torque ratio. CONSTITUTION:When clutch-to-clutch shifting is to be made in which engagement and disengagement of two frictional engagement devices, for example brakes B2, B3, are made simultaneously in order to execute a specific shift, for example the second and the third range shifting, a computer 30 determines the minimum value of the angular acceleration of the rotary part during the shift and the input shaft torque of the automatic transmission concerned when this minimum value is obtained. The angular acceleration ratio is determined from the angular acceleration of the rotary part before the torque phase and the minimum value of the angular acceleration of the rotary part during the shift. Also the ideal output shaft torque ratio is determined from the input shaft torque before the torque phase and the input shaft torque when the minimum value of the angular acceleration is obtained, and the tie-up is judged from the angular acceleration ratio and the ideal output shaft torque ratio, and thereupon the shifting-up is executed.

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