| 摘要 |
PURPOSE:To aim at reducing the amount of emission of CO while aiming at enhancing the performance of acceleration by reducing and compensating the amount of increment of initial acceleration in accordance with an accelerating condition by a decreasing rate which differs in accordance with the rotational speed of an engine. CONSTITUTION:A control device 4 receives values detected by a throttle sensor 5, a heat wire type air flowmeter 6, a rotational speed sensor disposed in a distributor 7, an oxygen sensor 8 or the like, and controls the valve opening time of a fuel injection valve 6. When a condition of accelerating operation is determined in accordance with an engine rotational speed and a throttle valve opening degree, a coefficient of increment of acceleration during initial acceleration is set in accordance with the engine rotational speed and the throttle valve opening degree. Further, simultaneously, a relatively small first decreasing rate is set in a low rotational speed range but a relatively large second decreasing rate is set in a high rotational speed range so as to perform subtraction until the coefficient of increment of acceleration becomes zero for every one half of revolution.
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