| 摘要 |
In a fuel injection pump, fuel discharged from a feed pump assembly is supplied to each pressurizing chamber through a corresponding metering valve. A portion of the fuel is supplied to a receiving chamber, which receives a drive mechanism that drives plungers, through a space defined between a drive shaft and a bush, which supports the drive shaft. A fuel groove is formed in an inner wall of the bush, so that fuel supplied from the feed pump assembly to the receiving chamber through the fuel groove is also supplied to lubricate between an outer wall of the drive shaft and the inner wall of the bush. |
