| 摘要 |
PURPOSE:To prevent the occurrence of variations in an injection quantity at idling, making the controlling method of a solenoid spill valve differ in times of the idling and non-idling at the time of controlling this spill valve according to an angle count portion and a time count portion in an engine turning angle signal. CONSTITUTION:When an engine 10 is running, a spill angle is calculated on the basis of each output of an engine speed sensor 46, an accelerator position sensor 20, a water temperature sensor 40 and a suction temperature sensor 12, etc., at an electronic control unit BCU 56. And, a solenoid spill valve 50 is controlled for its opening or closing according to an engine count portion and a time count portion in an engine turning angle signal to be outputted at every constant crank angle whereby a fuel injection quantity is controlled. At the time of detection of an idling state, the said angle count portion is kept constant, starting the time count from the same point all the time, and the solenoid spill valve 50 is controlled, while at the time of non-idling, the angle count portion to be varied in response to a spill angle is found, starting the time count from the end point, thus the solenoid spill valve 50 is controlled.
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