Method of detecting opening of a throttle valve in a fully close

Details Method of detecting opening of a throttle valve in a fully close Method of detecting opening of a throttle valve in a fully close

1985-05-22

1986-04-15

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

123493, G01M 1500

Patent

active

045819246

ABSTRACT:
A method of detecting the opening of a throttle valve in a fully closed position in an internal combustion engine. A first predetermined opening value larger than the minimum opening value of the throttle value determined by structural factors is stored as an initial value of a fully closed position-discriminating variable, while a second predetermined opening value smaller than the minimum opening value is stored as an initial value of a stored opening value of the throttle valve in the fully closed position detected by a throttle valve opening sensor. The fully closed position-discriminating variable is updated or set to a newly detected throttle valve opening value when the latter is smaller than the former. Then, the stored opening value of the fully closed throttle valve is updated or set to the thus updated fully closed position-discriminating variable when the latter continues to be substantially equal to throttle valve opening values subsequently detected over a predetermined period of time after the updating of the fully closed position-discriminating variable has been carried out.

REFERENCES:
patent: 4359894 (1982-11-01), Ikeura et al.
patent: 4515009 (1985-05-01), Hasegawa et al.

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