| 摘要 |
PURPOSE:To simply obtain the proper mixed gas by allowing the fuel necessary for the start of an internal-combustion engine to jet-out into the downstream side of a throttle valve by utilizing the mixed-gas passage in a slow fuel system and similarly allowing air to jet-out into the downstream side of the throttle valve from an air passage which bypasses the throttle valve. CONSTITUTION:A fuel passage 10 is allowed to communicate to a slow fuel series mixed-gas passage consisting of a slow jet 6, bypath hole 7, idle hole 8, and a slow air bleed 9, and opened at A point on the downstream side of a throttle valve 4. An air passage 11 which bypasses said throttle valve 4 is formed, and an orifice 12 is installed midway in the air passage 11, and the terminal edge of the orifice 12 is opened to the downstream side of the throttle valve 4, and an injection port 13 is formed. A starter plunger 16 having two seat parts 14 and 15 for opening the above-described passages 10 and 11 only on starting an internal- combustion engine is installed. Therefore, when the internal-combustion engine is started, the starter plunger 16 is pulled-up, and the fuel necessary for start is jetted-out from A point, and air is jetted-out from the injection port 13, and the proper mixed gas is formed. |
