| 摘要 |
A control system is adapted for a direct injection engine (1) of spark ignition type provided with an exhaust gas purifying catalyst (11) in an exhaust passage (3), a fuel injection valve (5) for directly spraying fuel into a combustion chamber, a sparking plug (4) having an electrode projecting into the combustion chamber. The control system includes an intake air amount controller (18) for controlling the amount of intake air to be admitted into the combustion chambers, and a fuel injection controller (19) for carrying out stratified combustion in a stratified combustion region set in a low engine load region while carrying out uniform combustion in a uniform combustion region set in a high engine load region. When the intake air amount controller (18) executes a control to reduce the amount of intake air in the stratified combustion region when the engine (1) is warm, and the fuel control system advances the fuel injection starting timing within a compression stroke and sets a degree of advancement within such a range where stratified combustion can be maintained. Accordingly, deterioration of combustibility can be effectively prevented when the intake air amount controller (18) executes the control to reduce the amount of intake air in the stratified combustion region. <IMAGE> |
