Automatic transmission control system for automobiles

Details Automatic transmission control system for automobiles Automatic transmission control system for automobiles

1997-03-31

1999-05-11

Wright, Dirk

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

F16H61/00

Patent

active

059022124

ABSTRACT:
A torque responsive hydraulic control system for an automatic transmission with a plurality of hydraulically actuated friction control elements. A working hydraulic pressure in the elements is controlled during shifting such that a pressure in a first element is removed after a specific state of the element is achieved. The removal being responsive to the torque of an input shaft of the transmission, the expiration of a specific time period, or a position of the throttle valve of a driving engine.

REFERENCES:
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patent: 5251512 (1993-10-01), Koenig et al.
patent: 5304102 (1994-04-01), Narita et al.
patent: 5429561 (1995-07-01), Wakahara et al.
patent: 5443595 (1995-08-01), Shimei et al.
patent: 5505675 (1996-04-01), Kuriyama et al.
patent: 5688207 (1997-11-01), Uchida et al.

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