| 摘要 |
PURPOSE:To improve the drivability and the exhaust emission by improving the acceleration performance during engine warming by taking into consideration of the adhering quantity of fuel due to the variation of the suction pipe pressure and the engine temperature. CONSTITUTION:The suction pipe pressure engine speed, the first and the second weighted average values of the suction pipe pressure, and the engine cooling water temperature at present which are memorized in the RAM of an electronic control circuit 44 are taken in, and the fundamental fuel injection is calculated on the basis of the suction pipe pressure and the engine speed. Then, the constant A which is determined so as to decrease as the engine cooling water temperature increases is calculated through the interpolation method in correspondence with the engine cooling water temperature at present. The increase/ decrease coefficient of the fuel injection quantity is calculated by multiplying the constant A by the value which is obtained by subtracting the second weighted average value from the first weighted average value. The fuel injection is calculated by correcting the fundamental fuel injection by this coefficient, and a fuel injection valve 24 is opened for the corresponding time.
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