FUEL SUPPLY DEVICE FOR ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel supply device for engine which can increase the amount of fuel in a mixed gas with good response in response to operation of a throttle valve and which can be reduced in size. SOLUTION: The fuel supply device 10 for engine is provided with a fuel amount increasing pump 16 built in an insulator part 15. The fuel amount increasing pump 16 is provided with a pump chamber 66 pressurizing a pressurizing chamber 27 and has a negative pressure chamber 65 put adjacent to the pump chamber 66 via a negative pressure diaphragm 57. A negative pressure chamber flow path 38 is formed in the insulator part 15 so as to provide communication between the negative pressure chamber 65 and a mixed gas supply path 36. A pump chamber flow path 31 is formed in a body 21 of a carburetor 11 so as to provide communication between the pump chamber 66 and the pressurizing chamber 27. COPYRIGHT: (C)2010,JPO&INPIT