| 摘要 |
Engine starting performance at the time of starting an engine by ignition start is enhanced. When a cylinder in the expansion stroke following ignition start is in a state enabling the production of high explosive torque, ignition start can be performed for the cylinder in the expansion stroke. Namely, when the state is such that high explosive torque can be produced even if the cylinder in the expansion stroke is combusted first, the cylinder in the expansion stroke is combusted first. On the other hand, in a state where the oxygen concentration in the cylinder in the expansion stroke is decreased, the cylinder in the expansion stroke is not combusted first. Instead, another cylinder other than the cylinder in the expansion stroke is combusted first. In this way, the cylinder in the expansion stroke is combusted after achieving the state where high explosive torque can be produced in the cylinder in the expansion stroke. |
