| 摘要 |
PURPOSE:To improve combustion efficiency of an engine, by injecting fuel from a fuel injection nozzle at time of relatively low internal pressure in a combustion chamber. CONSTITUTION:An engine load detecting means, consisting of a valve opening detecting means 22 and engine speed detecting means 23, detects a load of an engine to output a signal in accordance with the load of the engine, and this signal is input to a control unit 19, then a pulse signal, commanding injection timing and injection period of fuel, is output. While a fuel injection nozzle 18 receives the pulse signal from the control unit 19 to inject fuel to a combustion chamber of the engine. Then the control unit 19 comprises a basic injection quantity calculator circuit 38, ignition timing calculator circuit 39, injection-end timing calculator circuit 40, corrected injection quantity calculator circuit 41, exhaust gas recirculation (EGR) amount calculator circuit 42, corrected injection- end timing calculator circuit 43, fuel injection command circuit 45, etc., and fuel is injected at time of relatively low internal pressure in the combustion chamber.
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