| 摘要 |
A basic injection timing (InjO) is set, and an intermediate time ( DELTA Inj) is set based on rotational speed of an engine and fuel injection pulse time in a fuel injector. A fuel injection starting timing ( theta ) is set according to the sum or difference of the basic injection timing and the intermediate time. As a result, mixture is introduced into a vortex controlled combustion chamber so that a rich mixture is distributed to the upper portion of the combustion chamber near the ignition plug to provide satisfactory stratified combustion.
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