| 摘要 |
A fuel injection control system for an internal combustion engine achieves efficient combustion during starting the engine and reduces excess fuel consumption. While the engine has not warmed yet after starting, extra fuel is supplied to the engine by a starting fuel supply means. When the engine rotational speed exceeds a predetermined first speed corresponding to an almost complete combustion state, the fuel injection amount from the starting fuel supply means is gradually decreased. When the engine rotational speed is determined to exceed a predetermined second speed corresponding to a stable combustion state, the extra fuel from the starting fuel supply means is terminated, and the fuel injection amount based on the engine start control is changed over to the amount based on an air-fuel ratio control for post-starting state.
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