Patent ID: 6102010
Filing Date: 2000-08-15
Classification: F02M,F04B

Abstract:
A fuel supplying apparatus, comprising:a fuel injector injecting a fuel into an internal combustion engine;a fuel tank storing the fuel;a fuel path connecting said fuel injector and said fuel tank;a low-pressure fuel pump provided at the end of said fuel path on the side of said fuel tank;a high-pressure fuel pump provided between said low-pressure fuel pump and said fuel injector of said fuel path and having a fuel suction port, a fuel discharge port, a cylinder having a hole, a fuel pressurizing chamber formed on a part of said hole, and a plunger arranged reciprocally movably in said hole, and said high-pressure fuel pump sucking the fuel from said fuel path through said suction port into said fuel pressurizing chamber for pressurizing the same and discharging the pressurized fuel from said discharge port into said fuel path to pressure-feed the discharged fuel to said fuel injector by reciprocation work of said plunger; andhigh-pressure regulator, which is provided between said high-pressure fuel pump and said fuel injector of said fuel path, for adjusting pressure of the fuel discharged from said high-pressure fuel pump;wherein said high-pressure regulator is provided integrally with said high-pressure fuel pump;wherein said high-pressure regulator has a drain communicating with said fuel tank.