| 摘要 |
In a method of improving the combustion characteristics in an internal combustion engine having a cylinder and a piston therein defining a combustion chamber, an inlet valve for temporarily communicating the combustion chamber with an induction system and an exhaust valve for temporarily communicating the combustion chamber with an exhaust gas system, the exhaust valve is partially opened at least during a part of the working cycle during which the pressure in the region of the combustion chamber, that adjoins the exhaust valve, is lower than the pressure in the region of the exhaust gas system, that adjoins the exhaust valve. The flow passage formed by the partial opening of the exhaust valve along the seat thereof is of such a configuration that an exhaust gas backflow which occurs through it flows in directed fashion into the combustion chamber.
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