| 摘要 |
PROBLEM TO BE SOLVED: To provide a compressed self ignition engine 1 with a first turbosupercharger (a small-size turbosupercharger 62) and a second turbosupercharger (a large-size turbosupercharger 61) in which ignitability is reliably secured after end of deceleration when fuel cut is set to be performed in an operational area of the second turbosupercharger.SOLUTION: A controller (PCM 10) allows at least a first turbosupercharger to operate when an operational condition of an engine is in a first area in a low rotation side, and allows only a second turbosupercharger to operate by fully opening a flow control valve (a regulating valve 64a) when the operational condition of the engine is in a second area in a high rotation side. The controller also allows the first turbosupercharger to operate by setting opening of the flow control valve to be in a close side when an operational area of the engine is in the second area to operate only the second turbosupercharger at deceleration of a vehicle when the fuel cut is set to be performed. |
