Vehicle speed control system

Details Vehicle speed control system Vehicle speed control system

1988-09-29

1990-06-19

Marmor, Charles A.

Motor vehicles

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

Including fluid pressure actuated servomechanism

180177, 36442604, 123360, B60K 3100

Patent

active

049344765

ABSTRACT:
A vehicle speed control system compares current vehicle speed against a target vehicle speed and automatically controls the position of the throttle valve of an engine in accordance with the difference therebetween for reducing the difference. A plurality of brake switches are provided. The system terminates the control of the position when at least one of the switches detects a depression of the brake pedal. If at least one of the switches does not detect the depression of the brake pedal when at least one of the switches detects it, an abnormality signal is generated for blocking commencement of the control of the position of the throttle valve. The abnormality signal is extinguished to enable the commencement of the control when all of the switches detect the depression of the brake pedal.

REFERENCES:
patent: 4084659 (1978-04-01), Abend et al.
patent: 4434469 (1984-02-01), Suzuki et al.
patent: 4629027 (1986-12-01), Shigenobu
patent: 4754831 (1988-07-01), Hyodo et al.

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