| 摘要 |
PURPOSE:To improve startability, by providing a partition, which divides the inside of a carburetor float chamber into two upper and bottom parts, and providing in this partition a flow pipe, introducing a part of fuel in a float valve to the bottom chamber opening a main jet, while a pipe introducing surplus fuel to the upper side chamber. CONSTITUTION:A float chamber 11 in a carburetor 1 is divided into an upper side chamber 38 and a bottom side chamber 39 by a partition 37. And the partition 37 connects with a pipe 56 and a pipe 50. When an engine is started, a choke valve 5 is closed, and if a valve 25, provided in the half way from a tank 24 to a flow pipe 23, is opened, the carburetor, opening a valve 26 of a float 32 and allowing a part of fuel to flow into the bottom side chamber 39 from a chamber 58 through the pipe 56, extrudes deteriorated fuel, accumulated in a bottom side of the float chamber when the engine is not in use for a long period, to the upper side chamber 38 from the pipe 50. In this way, the carburetor, supplying new fuel to the bottom side chamber 39 to be attracted to a main nozzle 14 from a main jet 16, surely starts the engine. |
