Abstract: To feed stably fuel through a fuel injection valve for a long period and to stabilize pressure controlling characteristics of a fuel pressure controlling valve, a fuel case is partitioned to form 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 opened to the inside of a filter in fuel discharge chamber. Fuel discharged from the fuel pump is fed into the inside of the filter from the discharge passage and clean fuel is fed into a cleaned fuel discharge chamber. The clean fuel within the cleaned fuel discharge chamber is fed from a fuel discharge passage to a fuel distribution pipe and fed from a fuel introduction passage of the fuel pressure controlling valve to the fuel chamber thereof.

Abstract: 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.