Automatic speed control system

Details Automatic speed control system Automatic speed control system

1991-09-27

1992-10-13

Bonck, Rodney H.

Motor vehicles

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

Including electrically actuated servomechanism

180177, 74866, 3644241, B60K 3104, B60K 4104

Patent

active

051542501

ABSTRACT:
An automatic speed control system has a device for detecting an actual speed of vehicle, a device for setting a target speed of the vehicle, and a device for controlling the actual speed so that it approaches the target speed by adjusting a throttle opening. The improved system includes a down-shift device for making a down-shift operation of a transmission so as to accomplish the target speed under a predetermined condition when the vehicle runs on an uphill rod, and uphill end judge device for holding that an end of the uphill road has been reached when the throttle opening is reduced beyond a predetermined value from a maximum value after the down-shift operation. An uphill end of a short length can be properly detected so that a desirable speed control can be accomplished.

REFERENCES:
patent: 4285252 (1981-08-01), Yamaki et al.
patent: 4709595 (1987-12-01), Hayama
patent: 4736813 (1988-04-01), Hayama et al.
patent: 4933859 (1990-06-01), Tsuyama et al.
patent: 4967358 (1990-10-01), Etoh
patent: 4982805 (1991-01-01), Naitou et al.

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