| 摘要 |
<p>PURPOSE:To increase the detection precision of an intake air flow rate and prevent deterioration of the exhaust gas properties and fuel consumption, by using a corrected value regarding to an equivalent volume of intake air flow rate stored in respective plural operation ranges as a detected value of the intake air flow rate, in an operational range where a reverse flow of the intake air is generated. CONSTITUTION:A fuel injection valve 5 is arranged on the downstream side of a throttle valve 4 in an intake air path 3 connected to an air cleaner 2, in an engine 1. The fuel injection valve 5 is controlled by a control unit 6 on the basis of respective detected signals from an air flow meter 7 for detecting the intake air flow rate, a crank angle sensor 8 for detecting the operational conditions of engine 1, and the throttle sensor 9. In this case, the detected value of the intake air flow rate is used in an operational range where the reverse flow of the intake air is not generated while, the corrected value relating to the equivalent volume of the intake air flow rate stored in every one of plural operational ranges, in an operational range where the reverse intake air flow is generated, is used as the detected value of the intake air flow rate.</p> |
