| 摘要 |
PURPOSE:To make fuel injection response uniform at transition in each cylinder, by changing a phase of fuel injection timing every start of engine rotation and thereby making uniform a time when fuel stays in an intake manifold. CONSTITUTION:Fuel injection timing is computed by a control circuit 10 on the basis of a rotational speed data by a rotational angle sensor 6 and a suction air amount data by an air flow meter 3 to control a fuel injection valve 7. The control circuit 10 is provided with a setting means for setting a plurality of injection start signal generation conditions according to the number of cylinder. The control circuit 10 is further provided with a decision means for deciding whether or not an engine rotational speed is zero, a selecting means for selecting one of the injection start signal generation conditions upon start of engine rotation, and a timer means for cumulatively calculating a time from end of fuel cut to the next fuel cut for the signal generation condition as selected. The selecting means serves to select an injection start signal generation condition where a cumulative time calculated in the timer means is minimum. |
