| 摘要 |
PURPOSE:To improve operation characteristic by calculating a 1st and a 2nd weighted averages of suction pressures excluding pulsations and, at the time of performing asynchronous fuel injection under a condition where deviations of the said averages are more than a specified value, by making the 2nd weighted average the 1st weighted average during deceleration. CONSTITUTION:During operation of an engine, an electronic control circuit 44 detects a present 1st weighted average PM0 expressed by a 1st weighted average of a suction pipe pressure detected in the past by means of a pressure sensor 6 and by a present suction pipe pressure. Also, a present 2nd weighted average PM1i expressed by a 2nd weighted average of the suction pipe pressure detected in the past with a greater weight than the 1st weighted average and by a present suction pressure is detected. And when deviations of the averages PM0 and PM1i are more than a specified value, a fuel injection valve 24 is controlled to perform asynchronous injection. Also, the value of the 1st weighted average PM0 is set to the value of the 2nd weighted average PM1i.
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