Transmission control system for the automatic transmission of au

Details Transmission control system for the automatic transmission of au Transmission control system for the automatic transmission of au

1988-10-17

1990-07-24

Diehl, Dwight

Machine element or mechanism

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

Preselected indexed position

74878, 3644241, B60K 4106

Patent

active

049427849

ABSTRACT:
A transmission control system for automobiles having an automatic transmission comprises a hydraulic control circuit including a plurality of valves for locking a gear train itself by engaging a predetermined combination of frictional elements in the gear train upon detecting conditions which would result in sudden acceleration of the vehicle, only when the vehicle speed is lower than a predetermined value. The transmission control system of the invention reliably functions as a safety device for preventing unintended sudden acceleration of the vehicle.

REFERENCES:
patent: 3727488 (1973-04-01), Wakamatsu et al.
patent: 3845674 (1974-11-01), Hause
patent: 4566355 (1987-01-01), Sugano
patent: 4665777 (1987-05-01), Kikuchi et al.
patent: 4688449 (1987-08-01), Harada et al.
patent: 4691285 (1987-09-01), Takeda
patent: 4693142 (1987-09-01), Kurihara et al.
patent: 4726262 (1988-02-01), Hayakawa et al.

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