Hydraulic control system for automatic transmissions to improve

Details Hydraulic control system for automatic transmissions to improve Hydraulic control system for automatic transmissions to improve

1997-08-15

1999-09-28

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

F16H 6108

Patent

active

059578092

ABSTRACT:
A hydraulic control system for an automatic transmission includes a pressure regulator to regulate hydraulic pressure produced by an oil pump; a manual and automatic shift controller to form shift modes; and a hydraulic pressure controller to regulate shift quality and responsiveness such that shift modes are smoothly formed during shifting. A damper clutch controller operates a damper clutch of a torque converter. A hydraulic pressure distributor supplies and distributes appropriate amounts of hydraulic pressure to friction members that operate as input and reaction members in each shift stage.

REFERENCES:
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patent: 4569253 (1986-02-01), Higashi et al.
patent: 4607542 (1986-08-01), Sugano
patent: 4617841 (1986-10-01), Sugano
patent: 4742732 (1988-05-01), Hiramatsu
patent: 5010788 (1991-04-01), Sugano et al.
patent: 5094130 (1992-03-01), Hirose et al.
patent: 5634865 (1997-06-01), Jang
patent: 5707318 (1998-01-01), Shimei et al.

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