Throttle valve control for internal combustion engine

Details Throttle valve control for internal combustion engine Throttle valve control for internal combustion engine

1987-06-05

1988-08-23

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123361, F02D 1110

Patent

active

047652969

ABSTRACT:
A throttle valve control apparatus for a vehicle engine, whereby a reference degree of opening of the throttle valve is derived based on the accelerator pedal actuation position and is then corrected in accordance with vehicle operating conditions to obtain a target degree of opening of the throttle valve. An upper limit opening degree and a lower limit opening degree of the throttle valve are also derived, and if the target opening degree, which is obtained on the basis of the vehicle operating conditions, is found to be greater than the upper limit opening degree, then the upper limit opening degree is used as the target opening degree. Similarly, if the target opening degree, which is determined from the vehicle operating conditions, is less than the lower limit opening degree, then the lower limit opening degree is used as the target opening degree. The throttle valve is driven at a controlled drive speed so as to reduce any deviation between the actual degree of opening and the target degree of opening of the throttle valve.

REFERENCES:
patent: 4453516 (1984-06-01), Filsinger
patent: 4470396 (1984-09-01), Hasumi et al.
patent: 4519361 (1985-05-01), Murakami
patent: 4691676 (1987-09-01), Kiluchi
patent: 4691677 (1987-09-01), Hotate et al.

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