Interrelated power delivery controls – including engine control – Transmission control – Transmission controlled by engine
Patent
1995-04-25
1997-08-05
Pitts, Andrea L.
Interrelated power delivery controls, including engine control
Transmission control
Transmission controlled by engine
477156, 477158, 475120, F16H 6104
Patent
active
056536607
ABSTRACT:
The automatic transmission equipped with the control system of this invention is combined with a coupling for transmitting the rotation of the engine to the transmission and includes: a clutch which is applied when a forward running range is selected; a hydraulic servo which receives an oil pressure for applying the clutch; and a hydraulic control unit for controlling the oil pressure to the hydraulic servo. The hydraulic control unit includes: a manual valve which, when moved to a forward drive position by the operation of a shift lever, receives oil pressure from an oil pressure source, and supplies that oil pressure as a forward range oil pressure in a first oil passage; a regulator valve for regulating the oil pressure coming from the oil pressure source to thereby generate a regulated oil pressure in a second oil passage; a change-over valve switchable between (1) a first position for supplying the forward range oil pressure to a third oil passage and (2) a second position for supplying the regulated oil pressure to the third oil passage; a fourth oil passage for feeding the regulated oil pressure to the hydraulic servo while bypassing the change-over valve; and a one-way valve arranged in the fourth oil passage for allowing oil flow only in the direction from the regulator valve to the hydraulic servo.
REFERENCES:
patent: 4445401 (1984-05-01), Ishimaru
patent: 4603604 (1986-08-01), Nishikawa et al.
patent: 4713989 (1987-12-01), Hayakawa et al.
patent: 4722251 (1988-02-01), Sumiya et al.
patent: 4781081 (1988-11-01), Shibata et al.
patent: 4840092 (1989-06-01), Sakaguchi et al.
patent: 4850251 (1989-07-01), Kuwayama et al.
patent: 5050459 (1991-09-01), Ishikawa et al.
patent: 5078028 (1992-01-01), Ishikawa et al.
patent: 5115696 (1992-05-01), Takada et al.
patent: 5157992 (1992-10-01), Hayashi et al.
patent: 5342253 (1994-08-01), Mizobe et al.
Hayabuchi Masahiro
Nishida Masaaki
Tsukamoto Kazumasa
Yamamoto Yoshihisa
Aisin Aw Co. Ltd.
Kwon Peter T.
Pitts Andrea L.
LandOfFree
Control system for automatic transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control system for automatic transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control system for automatic transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1071016