Control apparatus for a suction air quantity of an engine

Details Control apparatus for a suction air quantity of an engine Control apparatus for a suction air quantity of an engine

1991-04-05

1992-01-14

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

123479, 123585, F02D 4116, F02M 306, F02M 2306

Patent

active

050800612

ABSTRACT:
A control apparatus for a suction air quantity of an engine adapted to detect a revolution number of the engine, to measure a difference between the detected revolution number of the engine and a target revolution number of the engine, and to regulate a suction air quantity in a bypass passage which bypasses a throttle valve of the engine corresponding with the difference so that the revolution number of the engine agrees with the target revolution number of the engine, which comprises misfire detecting means for detecting a misfire of the engine, means for outputting a first signal of correcting a timewise change of a suction quantity of the engine based on the difference between the revolution number and the target revolution number of the engine, means for retaining the first signal to a value just before the misfire in case of detecting of the misfire, and means for outputting a second signal for increasing the suction quantity so that the suction quantity is increased in case of detecting of the misfire.

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