| 摘要 |
PURPOSE:To prevent a drop in engine speed and improve engine stability by advancing ignition timing when an external load is inputted and a detected value related to a fuel temperature is equal to or smaller than a reference value, and restricting the advance of the ignition timing when the detected value is larger than the reference value. CONSTITUTION:An injector 5 as a fuel injection valve is provided in the pipe line 4 of an engine 1, and a valve 14 and a solenoid 15 are connected to the injector 5, thereby constituting a fuel pressure adjustment device 16. And the control of the solenoid 15 is made with a control unit 9 and when a valve detected by an intake air temperature sensor 6 is, for example, equal to or above a reference value, negative pressure K fed to the valve 14 is shut off, thereby increasing the amount of fuel injection from the injector 5. Also, the control unit 9 is inputted with a signal from each of an idle switch 17 and an external load detecting means 18. As a result, when an external load, for example, is being inputted and an intake air temperature H is equal to or less than a reference value at the time of an idling operation, ignition timing is advanced.
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