Control system for automatic transmission

Details Control system for automatic transmission Control system for automatic transmission

1988-08-31

1989-12-12

Bonck, Rodney H.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74877, 3644241, B60K 4122, B60K 4118

Patent

active

048859605

ABSTRACT:
A creep phenomenon of an automotive vehicle is prevented by an arrangement which is provided with an anti-creep mode which is operative to change the gear automatically to a speed range having a relatively low speed reduction ratio when the vehicle is at rest. A double engagement within the transmission and resulting oscillations which would occur when a special operation is performed is prevented. At this end, a time delay is provided before shifting to the anti-creep mode when the vehicle is at rest and the throttle valve opening of an engine is equal to or less than a given value.

REFERENCES:
patent: 4513638 (1985-04-01), Nishikawa et al.
patent: 4513639 (1985-04-01), Hiramatsu
patent: 4644826 (1987-02-01), Kubo et al.
patent: 4648289 (1987-03-01), Kubo et al.
patent: 4653622 (1987-03-01), Miyake
patent: 4694709 (1987-09-01), Kikuchi et al.
patent: 4730708 (1988-03-01), Hamano et al.
patent: 4784020 (1988-11-01), Hamano et al.

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