| 摘要 |
PROBLEM TO BE SOLVED: To promote gasfication and atomization of fuel injected to inside of a cylinder without deteriorating filling efficiency. SOLUTION: A cylinder injection type internal combustion engine is provided with a fuel injection means 9 for directly injecting fuel to inside of the cylinder 4, an exhaust valve 13 that opens mainly in an exhaust stroke and exhausts burnt combustion gas from inside of the cylinder 4 and an exhaust valve driving means 15 for opening/closing the exhaust valve 13, and the exhaust valve driving means 15 opens the exhaust valve 13 also in an intake stroke and flows the the burnt combustion gas into inside of the cylinder 4. The exhaust valve driving means 15 opens the exhaust valve 13 during a period when the fuel injection means 9 injects fuel in the intake stroke. Since the burnt combustion gas at high temperature flowing in again is collided with the fuel flying after the injection, the gasfication and atomization of the injected fuel can be promoted, and the fuel can be prevented from colliding with and adhering to a cylinder wall or the like. COPYRIGHT: (C)2005,JPO&NCIPI
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