| 摘要 |
PURPOSE:To improve an output by disposing an injector on the combustion chamber side and an injector on the suction passage side and increasing the injection ratio of the injector on the suction passage with the increase in rotation and a load. CONSTITUTION:An injector 13 on the combustion chamber side to inject fuel directly in a combustion chamber 3 and an injector 14 on the suction passage side to inject fuel to a suction passage 10 are disposed. Injection of fuel through the injectors 13 and 14 is controlled so that the injection ratio of the injector 14 on the suction passage side is increased with the increase in rotation and a load. Namely, by injecting fuel in a high ratio through the injector 13 on the combustion chamber side during low rotation low load running, stratified combustion is carried out. During high rotation high load running, atomization of fuel and mixture of fuel with air are promoted by the increase of the injection ratio of the injector 14 on the suction passage side. This constitution increases air utilization efficiency and improves an output. |
