Speed control apparatus

Details Speed control apparatus Speed control apparatus

1987-08-19

1989-07-04

Chin, Gary

Boots, shoes, and leggings

3644241, 74864, 74866, 180179, B60K 3100

Patent

active

048456217

ABSTRACT:
There is disclosed a speed control apparatus installed in an automobile equipped with an automatic transmission. This apparatus includes a microcomputer, an input interface circuit, an output interface circuit, an actuator for the automatic transmission, and an actuator for maintaining the speed of the automobile at the speed set by the driver. The apparatus controls the operation of the transmission in such a way that it shifts into another gear, depending on the automobile speed or engine speed and also on the engine load or the throttle opening. The speed set by the driver is maintained by controlling the throttle opening. The apparatus estimates the driving force of the transmission when it makes an upshift, from the present speed, the present throttle opening, and the present transmission gear. If the estimated force is not sufficiently large, then such an upshift is inhibited.

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patent: 4709595 (1987-12-01), Hayama
patent: 4720793 (1988-01-01), Watanabe et al.
patent: 4736813 (1988-04-01), Hayama et al.
patent: 4747326 (1988-05-01), Braun

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