| 摘要 |
PURPOSE:To control a fuel supply amount to a proper value even if abnormal condition is generated on an alcoholic sensor, in the case when the fuel supply amount is corrected according to alcoholic concentration in mixture fuel to be supplied to an engine. CONSTITUTION:In the case when abnormal condition is generated on an alcoholic sensor 62, such an alcoholic correction coefficient is used, as being estimated from an air fuel ratio obtained on the basis of oxygen concentration VO2 detected by an oxygen sensor 5, instead of alcoholic correction coefficient obtained on the basis of alcoholic concentration signal Va detected by the alcoholic sensor 62.
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