Running speed control device for a vehicle

Details Running speed control device for a vehicle Running speed control device for a vehicle

1995-05-23

1997-04-29

Johnson, Brian L.

Motor vehicles

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

Including electrically actuated servomechanism

B60K 3102

Patent

active

056240058

ABSTRACT:
When an "off" state of an IDLE switch is detected even once after an ignition switch of an internal combustion engine is turned on, a cruise ECU determines that the IDLE switch is normal, and performs constant-speed cruise control if the start thereof is instructed. Because the constant-speed cruise control is normally instructed while a vehicle is running, if the IDLE switch is normal, the IDLE switch becomes the "off" state at least one time during the time period until the start of the constant-speed cruise control is instructed after the ignition switch is turned on. For this reason, if the IDLE switch does not become the "off" state even once, the cruise ECU determines that the IDLE switch has failed and interrupts the constant-speed cruise control.

REFERENCES:
patent: 5014201 (1991-05-01), Tsukahara et al.
patent: 5023792 (1991-06-01), Shioyama
patent: 5054570 (1991-10-01), Naito et al.
patent: 5125471 (1992-06-01), Iwaoka et al.
patent: 5519259 (1996-05-01), Voigt
patent: 5524724 (1996-06-01), Nishigaki et al.

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