| 摘要 |
PROBLEM TO BE SOLVED: To actualize advantageous effects of improving exhaust emission while properly correcting a fuel amount. SOLUTION: An ECU calculates an engine required correction amount feg consisting of an after-start increased amount, a warm-up increased amount and an OTP increased amount and calculates a catalyst required correction amount fcat consisting of an acceleration/deceleration correction amount based on the accelerated/decelerated condition of a vehicle and an after-fuel-cut correction amount (S201, S202). During supplying secondary air, it calculates a secondary air supplying correction amount fsai in accordance with a secondary air flow amount and a target air/fuel ratio at this time (S204). In the case of feg≤fsai, it adds the fsai and the fcat to a base fuel amount and calculates a final fuel injection amount (S206). In the case of feg>fsai, it calculates to add the feg and the fcat to the base fuel amount and calculates the final fuel injection amount (S207). COPYRIGHT: (C)2006,JPO&NCIPI
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