| 摘要 |
PURPOSE:To keep off any overrichness in an air-fuel ratio, by making accelerating interruptive injection after and end of ordinary fuel injection so as not exceed the specified crank angle before the closing of a suction valve. CONSTITUTION:A signal out of the throttle sensor 12 installed in a throttle valve 7 is inputted into a control unit 9, and when an accelerating state is detected out of an opening variation in the throttle valve 7, the control unit performs an accelerating interruptive injection after an orinary fuel injection end out of a fuel injection valve 8. At this time, a signal out of a crank angle sensor 11 is detected, and any injection on and after the specified crank angle before the closing of a suction valve is prohibited. With this constitution, such a possibility that fuel stay at the upstream side of the suction valve and thereby an air-fuel ratio becomes overrich is preventable.
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