FUEL SUPPLY DEVICE FOR ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a fuel supply device for an 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 the engine is built in an insulator part 15 and is provided with a fuel amount increasing pump 16 disposed at an upper part of a mixed gas supply flow path 36. 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 set adjacently to the pump chamber 66 via a negative pressure diaphragm 57. A negative pressure chamber flow path 38 is extended out downward to the mixed gas supply flow path 36 from a lower part 45a of the negative pressure chamber 65, and part of the mixed gas 13 is introduced into the negative pressure chamber 65 from the mixed gas supply flow path 36 using the negative pressure chamber flow path 38. COPYRIGHT: (C)2010,JPO&INPIT