| 摘要 |
PURPOSE:To perform proper fuel injection by providing a means for producing a solenoid valve push-up signal and means for producing a solenoid valve holding signal. CONSTITUTION:Ti determining means 101 will determine the output time Ti of a turn-on control signal for injector, while T memory means 102 will store the period T of a pulse signal for holding the solenoid valve. Tomin memory means 103 will store the shortest time Tomin necessary for pushing up the solenoid valve. Operating means 104 will calculate the actual push-up time of solenoid valve. Solenoid valve drive circuit 110 is controlled by solenoid valve push-up signal and pulse signal for holding the solenoid valve thus to regulate the current flowing through the solenoid. Consequently, the proper fuel injection can be performed.
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