| 摘要 |
PURPOSE:To restrain change of air fuel ratio sods to improve driving performance by providing a sensor to detect a combustion state of an engine, and regulating fuel amount to be supplied to the engine by output of this sensor. CONSTITUTION:A throttle chamber 17 provided with a throttle valve 3 is fixed to the intake pipe 2 of an engine 1. Intake air amount is regulatingly controlled by the throttle valve 3. An injector 3 supplies fuel. A combustion state of the engine is detected by a pressure sensor 151 mounted on the edge of a spark plug. A signal of the pressure sensor 151 is input to a control unit 10, and supplies fuel amount to the supplied to the engine. In this way, change of air fuel ratio is restrained, and driving performance can be improved.
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