Line pressure control device for automatic transmission

Details Line pressure control device for automatic transmission Line pressure control device for automatic transmission

1989-02-22

1991-01-29

Gruber, Felix D.

Boots, shoes, and leggings

36457104, 36457105, 74867, G06F 1520, G60K 4118

Patent

active

049891472

ABSTRACT:
In order to prevent abnormally high or low line pressures during low throttle operation of the engine, a line pressure control schedule is revised when an idle switch indicates that the throttle valve has in fact assumed a fully closed position, in a manner wherein the fully closed value in the schedule is compared with that produced by throttle position sensor, and is changed incrementally at predetermined time intervals in the event that a difference exits.

REFERENCES:
patent: 4490804 (1984-12-01), Martinsons
patent: 4730521 (1988-03-01), Hayasaki et al.
patent: 4730522 (1988-03-01), Morimoto
patent: 4791568 (1988-12-01), Hiramatsu et al.
patent: 4833613 (1989-05-01), Mack et al.
patent: 4930079 (1990-05-01), Kondo

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