Fuel feeding device for fuel injector

摘要

To feed stably fuel through a fuel injection valve for a long period of time and to stabilize pressure controlling characteristics of a fuel pressure controlling valve for a long period of time, a fuel case is partitioned into and formed by a fuel introduction chamber, a pump receiving chamber and a fuel discharge chamber. A fuel pump is received in the pump receiving chamber, an intake passage thereof communicates to the fuel introduction chamber and a discharge passage is directly opened to a filter received in fuel discharge chamber. The fuel discharged from the fuel pump is fed into the filter from the discharge passage and the fuel from which foreign matter has been removed through the filter is fed into the fuel discharge chamber. The clean fuel within the fuel discharge chamber is fed from a fuel discharge passage to a fuel distribution pipe and fed from a fuel introduction passage to the fuel chamber of the pressure controlling valve.