| 摘要 |
Provided is a combustion control system for an internal combustion engine, said system comprising: a spark plug that spark-ignites an air-fuel mixture in a combustion chamber; a plurality of ignition coil pairs for generating discharge of the spark plug; and a fuel injection valve that can atomize fuel and inject the fuel into an intake pipe. The atomized fuel is injected into the intake pipe, and a uniform and lean air-fuel mixture is formed in the combustion chamber. The air-fuel ratio of the air-fuel mixture in the combustion chamber is controlled to an air-fuel ratio that is leaner than a predetermined lean air-fuel ratio that is leaner than the stoichiometric air-fuel ratio, and the spark plug discharge start timing and the discharge duration are controlled using the plurality of ignition coil pairs. The discharge start timing is set to be more advanced than the discharge start timing for igniting a stratified and lean air-fuel mixture that is formed so that the air-fuel mixture has a comparatively smaller air-fuel ratio in the vicinity of the spark plug. |
