| 摘要 |
PURPOSE:To ensure high engine output while obtaining stable low load running of engine by promoting carburetion of injected fuel while producing powerful turning stream and turbulence in a combustion chamber. CONSTITUTION:An intake air amount supplied from a second intake path 8 into a combustion chamber 4 is more than that supplied from a first intake path 6 into the combustion chamber 4 so that powerful turning stream and turbulence are produced in the combustion chamber 4. On the other hand, since the sectional area of an air passing gap K is small, the flow speed of intake air flowing in said gap K is speeded up and fuel is injected by a fuel injection valve 22 toward the intake air flow having the flow speed increased to promote the carburetion of the fuel. Also, since the injected fuel does not attach to an intake controlling valve 24, the injected fuel is supplied immediately into the combustion chamber 4 so that highly responsive acceleration can be ensured. |
