Electronic control device for motor vehicle use

Details Electronic control device for motor vehicle use Electronic control device for motor vehicle use

1991-07-30

1992-05-12

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

123585, F02D 4108

Patent

active

051117878

ABSTRACT:
An electronic control device for motor vehicle comprises, a plurality of sensors for detecting the operation conditions of a motor vehicle, control device for calculating control data for the motor vehicle in view of output signals of the sensors, and for outputting control signals according to the control data, solenoid valve controlled in view of the control signals outputted by the control device, and failure detecting device for monitoring the state of the solenoid valve every predetermined period of time to determine that the solenoid valve and a drive circuit thereof are out of order, when the solenoid valve is held in the same state for a predetermined period of time.

REFERENCES:
patent: 4635607 (1987-01-01), Yasuoka et al.
patent: 4760824 (1988-08-01), Sakurai
patent: 4763623 (1988-08-01), Sasaki
patent: 4771749 (1988-09-01), Kiuchi et al.
patent: 4966112 (1990-10-01), Shimomura
patent: 5031595 (1991-07-01), Heck et al.
patent: 5054450 (1991-10-01), Oota et al.

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