| 摘要 |
A transfer pump having a plurality of pistons is provided to reduce the number of parts, monitor amount of fuel injected to an engine with one solenoid valve, emit power by the pistons less than equivalent capacity of a single piston, and improve pressurized moving toward an injection rail, and reduce a torque change on a cam shaft. A transfer pump has bellows type moving parts(4a,4b) for a pump filled with a hydraulic liquid and emptied alternately. An amount of a fuel allowed to chambers(5a,5b) to which the bellows move is decided by a solenoid valve(8) driven by a computer for monitoring an engine at an upper part. The transfer pump includes at least two pump units supplied by a single intake system(6), and a conveyor duct(10) which is common to the pump units.
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