Apparatus for controlling automatic transmission for vehicle

Details Apparatus for controlling automatic transmission for vehicle Apparatus for controlling automatic transmission for vehicle

1993-04-23

1995-03-28

Vrablik, John J.

Machine element or mechanism

Gearing

Interchangeably locked

477117, F16H 6104

Patent

active

054006708

ABSTRACT:
In an apparatus for controlling an automatic transmission for a vehicle in which, at the time of gear engagement due to changing over from a reverse range or a neutral range to a forward range, a speed-change stage of the automatic transmission is shifted down to a low-speed stage after once setting it to a predetermined high-speed stage. The apparatus has a detector for detecting an amount of slippage of high-speed stage engaging elements which establish the high-speed stage and a control device for controlling to shift down, at the time of gear engagement, to the low-speed stage after the amount of slippage of the high-speed stage engaging elements has lowered to a predetermined value or smaller.

REFERENCES:
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patent: 5224398 (1993-07-01), Sasaki
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