| 摘要 |
This invention relates to a wall flow correction of an engine having a fuel injector that injects fuel towards a fuel adhesion part such as an air intake valve. An equilibrium adhesion mount of fuel adhering to a fuel adhering part and a quantity proportion are computed based on a cooling water temperature in a temperature equilibrium state. The adhesion amount of fuel adhering to the fuel adhering part is also predicted at the present time, and the temperature of the fuel adhering part is estimated. A temperature difference between a detected cooling water temperature and estimated fuel adhering part temperature is computed, and an adhesion rate is calculated based on this equilibrium adhesion amount, quantity proportion, predicted adhesion amount and temperature difference. A basic injection amount is corrected using this adhesion rate, and the precision of air-fuel ratio control immediately after start-up when the temperature of the fuel adhering part is in a non-equilibrium state, is improved.
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