Control system for automatic transmission

Details Control system for automatic transmission Control system for automatic transmission

1996-05-31

1999-06-01

Louis-Jacques, Jacques H.

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Transmission control

701 51, 701 55, 477120, 477901, G06G 770

Patent

active

059084618

ABSTRACT:
A control system for an automatic transmission having a running status detector for detecting the running status of a vehicle including an input torque from an engine; a running resistance estimator for estimating a running resistance on the basis of the running status of the vehicle; a running resistance comparator for comparing the estimated running resistance and a preset reference value; and a shift characteristic changing device for changing shift characteristics in accordance with the comparison result of the running resistance comparator. The automatic transmission control system further has a temperature sensor for detecting a temperature relating to the temperature of the engine and a decision device for determining a specific engine running status, in which the output of the engine drops, on the basis of an output signal coming from the temperature sensor. The running resistance comparator changes the reference value in accordance with the determination of the decision device.

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