Automatic speed control system for vehicle

Details Automatic speed control system for vehicle Automatic speed control system for vehicle

1989-04-26

1991-08-13

Kashnikow, Andres

Motor vehicles

With means responsive to speed of vehicle for maintaining...

Including electrically actuated servomechanism

180170, 36442604, B60K 3104

Patent

active

050388800

ABSTRACT:
An automatic speed control system for a vehicle includes an automatic transmission, a speed change switch for producing signals for changing a vehicle speed, and a shift down control device. The shift down control device carries out a shift down operation of the automatic transmission of the vehicle under a certain vehicle driving condition when the shift down control device receives the signals from the speed change switch. A gradient detecting device detects a gradient of a running path on which the vehicle is driven, and shift down prohibiting device prohibits the shift down operation even where the speed change switch is actuated to the vehicle speed at least when the gradient of a running path detected is greater than a predetermined value so that unnecessary shift changes are suppressed.

REFERENCES:
patent: 4845621 (1989-07-01), Kawata et al.

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