| 摘要 |
PURPOSE:To prevent an engine stall at the time of a sudden decrease of a number of revolutions from occurring, by a method wherein a fuel flow control valve is controlled when a state of the sudden decrease of the number of revolutions is detected through an output of a number of revolutions' sensor and a fuel flow is increased during a set period. CONSTITUTION:An engine is formed by providing a fuel injector 12 provided with a solenoid valve 13 as a fuel flow control valve within a fuel duct into which low pressure fuel is fed from a fuel pump within a suction duct 8, and the solenoid valve 13 is controlled by a computer 40. In this case, when a state of a sudden decrease of an engine speed signal to be obtained through an ignition pulse signal from an ignitor 44 is detected, the solenoid valve 13 is controlled and a fuel quantity to be fed to a combustion chamber is increased during a set period. At the time of a sudden decrease of the number of revolutions, earlier stabilization of the number of revolutions is contrived by opening a bypass valve 20 provided in a bypass 18 detouring a throttle valve 10 in a suction duct 8 and increasing a suction air quantity. |
