Fail-safe circuit of a fixed speed traveling apparatus

Details Fail-safe circuit of a fixed speed traveling apparatus Fail-safe circuit of a fixed speed traveling apparatus

1986-05-22

1988-05-31

Love, John J.

Motor vehicles

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

Including fluid pressure actuated servomechanism

180177, 123350, B60K 3110

Patent

active

047474602

ABSTRACT:
A fail-safe circuit of a fixed speed traveling apparatus wherein there are provided with a control valve for introducing an engine negative pressure to an actuator which controls a throttle opening degree, a release valve for introducing an atmospheric pressure to an actuator and a control circuit for controlling the control valve and the release valve. At brake ON, a first cancel signal is supplied to the control circuit for canceling a fixed speed traveling and to open a current passage of the release valve. A second cancel signal is generated to the control circuit in the case where the current passage of the release valve is open.

REFERENCES:
patent: 4106584 (1978-08-01), Matsubara
patent: 4158398 (1974-06-01), Riddel
patent: 4312419 (1982-01-01), Noddings
patent: 4345663 (1982-08-01), Shields

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