| 摘要 |
PURPOSE:To make accelerating fuel properly feedable in a wide range accelerating state with a simple structure, by making each accelerating fuel passage open to a position adjacent to a choke valve and to the upstream side of a throttle valve in time of its full closure, while interconnecting each passage through. CONSTITUTION:When an accelerator pedal is operated and an accelerating pump rod 19 is depressed, force is added to a piston 21 of an accelerating pump 19a via a spring 20', and this piston 21 goes down against a spring 20. If so, gasoline fuel inside a pump cylinder chamber 22 pushes an outlet check ball 16 and an injector weight 23 upward, whereby one side fuel is spouted out of a first accelerating fuel passage 17 to the vicinity of a choke valve 2 at a first accelerating fuel nozzle 7 with an adjusted quantity while the other side is spouted out of a second accelerating fuel passage 18 to the vicinity of a throttle valve 5 at a second accelerating fuel nozzle 9 with an adjusted quantity likewise. With this constitution, making responsiveness so better, thus a proper quantity of fuel is smoothly feedable in all accelerating states. |
