System and method for automatically controlling vehicle speed to

Details System and method for automatically controlling vehicle speed to System and method for automatically controlling vehicle speed to

1988-11-18

1991-08-13

Chin, Gary

Boots, shoes, and leggings

123352, 180179, B60K 3100

Patent

active

050401211

ABSTRACT:
A system and method for automatically controlling a vehicle speed to a desired cruise speed are disclosed in which a vehicle speed sensor which output an analog quantity corresponding to a current vehicle speed is provided, a vehicle speed determining circuit which derives the current vehicle speed on the basis of the analog quantity derived from the vehicle speed sensor and determines whether the derived current vehicle speed is below a predetermined speed above which the cruise speed control run is appropriate is furthermore provided independently of a control unit of the system. When the vehicle speed determining circuit outputs a determination signal indicating that the current vehicle speed is below the predetermined speed and the control unit outputs a predetermined control command signal, a power supply line connected to a throttle valve actuator is, at first, interrupted. Then, the power supply to the control unit is interrupted.

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