| 摘要 |
PURPOSE:To maintain the constant air-fuel ratio even in the transient operation by calculating the correction rate towards increase according to the transient variation quantity in operation state and obtaining the excessive or insufficient quantity from the equillibrium state quantity of the intake system residual fuel quantity by using said correction rate. CONSTITUTION:The excessive or insufficient quantity DM is calculated by a calculating means 4 from the difference between the equillibrium state quantity MO in the stationary operation condition for the intake system reserved fuel quantity which is calculated by a calculating means 2 according to the operation state and the estimation value M and the correction rate DK calculated by a calculating means 10 according to the transient variation quantity calculated by a calculating means 9. The estimation value M is calculated from DM and the estimation value of the equillibrium state quantity by a calculating means 5. The excessive or insufficient quantity DM is multiplied by the correction rate KGI corresponding to the engine operation state and forms the correction quantity KDM, and the fundamental injection quantity TP is corrected by a correcting means 8. Therefore, in the early period in rapid acceleration, a sufficient quantity of fuel is supplied, and the sufficient reduction of fuel quantity is permitted in the early period of deceleration, and the air-fuel ratio is provided with the flat characteristic.
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