Throttle valve control apparatus

Details Throttle valve control apparatus Throttle valve control apparatus

1987-11-25

1989-08-08

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123399, F02D 902, F02D 4114

Patent

active

048542830

ABSTRACT:
A control apparatus for electrically operating a throttle valve adapted to adjust the amount of air drawn into an internal combustion engine to adjust the position of the throttle valve. The position and operating condition of an accelerator pedal are electrically detected to generate a signal in accordance with the accelerator position to drive an actuator adapted to operate the throttle valve, and also a desired throttle position established by the signal, the detected actual position of the throttle valve and the operating condition of the accelerator pedal are suitably compared and examined, thus monitoring to see whether the detection of the accelerator position is not faulty, whether the throttle valve is controlled to follow the desired throttle position and so on and thereby performing a safe control by using a substitute desired position upon occurrence of a faulty condition. Also, during the period of acceleration/deceleration, a driving signal is generated to operate the throttle valve to suit the engine operating condition. Further, when the actuator steps out of synchronism, an evacuation control is performed.

REFERENCES:
patent: 4471610 (1984-09-01), Watanabe
patent: 4488527 (1984-12-01), Pfalzgraf et al.
patent: 4519360 (1985-05-01), Murakami
patent: 4519361 (1985-05-01), Murakami
patent: 4541378 (1985-09-01), Kitamura
patent: 4612615 (1986-09-01), Murakami
patent: 4640248 (1987-02-01), Stoltman
patent: 4671235 (1987-06-01), Hosaka
patent: 4718380 (1988-01-01), Katayose et al.
patent: 4727838 (1988-03-01), Oshiage et al.
patent: 4745899 (1988-05-01), Kiuchi et al.

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