| 摘要 |
PURPOSE:To raise the efficiency of suction of the mixture and increase output by providing a control communication orifice communicating with a suction passage near a suction valve and connecting the orifice with a supply chamber having a required volume. CONSTITUTION:When the suction valve 4a is opened and a piston is lowered at the time of the suction stroke of the engine, the inside of the suction passage 3a is placed under a fixed negative pressure and simultaneously the negative pressure works also in the supply chamber 10 through the intermediary of the control communication orifice 7 and connecting pipes 8 and 9, thereby the pressure in the chamber 10 being reduced. Even when, on the next stage, the suction valve 4a is closed in preparation of a compression stroke, the negative pressure still remains in the chamber 10, thereby the suction operation being connected with the suction passage 3a and the mixture flowing in the chamber 10. After that, when the engine returns to the suction stroke again, the mixture within the chamber 10 is also sucked along with the suction of mixture through the suction passage 3a. Thus, the efficiency of suction of the mixture is raised.
|
