| 摘要 |
PURPOSE:To obtain an excellent accelerating performance of an engine over the entire range of engine speed, by increasing the quantity of fuel supplied in inverse proportion to the asynchronous injection with decreasing of the engine speed in a particular range of the engine speed. CONSTITUTION:In controlling fuel injection by an electronic control circuit 22, the quantity of fuel supplied in inverse proportion to the asynchronous injection is increased with decreasing of the engine speed in a particular range of the engine speed. That is, when a throttle valve is opened from its completely closed position, the state of acceleration is detected at first. If it is detected that the engine is in acceleration, the period of asynchronous injection is determined at the next step. The period of asynchronous injection is determined according to the engine speed NE. For instance, when the engine speed NE is higher than 2,000rpm, the period of asynchronous injection is kept constant at 2ms. On the other hand, when the engine speed is lower than 2,000rpm, it is increased with decreasing of the engine speed. Further, when the engine speed NE is lower than 1,000rpm, the period of asynchronous injection is kept constant. By thus effecting asynchronous injection on the basis of the above period, it is enabled to obtain an excellent accelerating performance of an engine over the entire range of engine speed. |
