Apparatus for controlling automatic trasmission during downhill

Details Apparatus for controlling automatic trasmission during downhill Apparatus for controlling automatic trasmission during downhill

1997-05-01

1998-09-29

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477901, 477904, F16H 6102, F16H 6110, F16H 6116

Patent

active

058139427

ABSTRACT:
A shift control apparatus for controlling a speed ratio of an automatic transmission of a motor vehicle having an engine during running of the vehicle on a downhill road, on the basis of an actual acceleration value of the vehicle as compared with a reference acceleration value of the vehicle, the apparatus including a device for determining reduction of an actual output of the engine with respect to a desired output of the engine as represented by an operating amount of an accelerator pedal, and a device for reducing the reference acceleration value by a compensating amount which decreases with an increase in the running speed of the vehicle, upon determination of the reduction of the actual output of the engine.

REFERENCES:
patent: 4701853 (1987-10-01), Osanai
patent: 5129288 (1992-07-01), Sasaki et al.
patent: 5728026 (1998-03-01), Sakaguchi et al.

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