ENGINE FOR IMPROVING COMBUSTION EFFICIENCY IN FOUR CYCLE GASOLINE ENGINE, AND AUXILIARY DEVICE FOR THE ENGINE

摘要

PURPOSE: To improve combustion efficiency by providing a valve which is opened simultaneously with an intake valve or opened minute slowly more than it when intake stroke of air-fuel mixture is carried out, and which is closed the while between a point when compressing stroke is carried out and a bottom dead point is passed minutely and a point of minute this side of a top dead point. CONSTITUTION: In an engine provided with an intake valve 8 which is provided in order to blow air-fuel mixture to be supplied passing an intake passage provided with a carburetor 11 and a supercharger 12 into a cylinder and an exhaust valve 10 for discharging combustion exhaust gas, a valve 9 is provided so as to open simultaneously with an intake valve 8 or opened minute slowly more than it when intake stroke of air-fuel mixture is carried out, and close the while between a point when compressing stroke is carried out and a bottom dead point is passed minutely and a point of minute this side of a top dead point. As a countermeasure when the open valve is over opened even if compressing stroke is started, an intake valve 7 exclusive for air is provided which opens, before air-fuel mixture has trouble with explosion, over expands and on the contrary resists engine revolution, and which closes at the bottom dead point. A space in which there is no something is connected to the valve 9, compressed air-fuel mixture is housed, and the air-fuel mixture is supplied at the time of the intake stroke.