Patent ID: 6021763
Filing Date: 2000-02-08
Classification: F02D,F02M

Abstract:
A fuel supply apparatus for a direct injection gasoline internal combustion engine, said apparatus comprising:a fuel injection valve for injecting fuel directly into a combustion chamber of an engine;a high pressure fuel pump for supplying fuel to said fuel injection valve;a low pressure fuel pump for supplying fuel to said high pressure fuel pump;a low pressure pressure regulator for adjusting the pressure in a low pressure fuel system between said low pressure fuel pump and said high pressure fuel pump to a predetermined low pressure;a high pressure pressure regulator for adjusting the pressure in a high pressure fuel system downstream of said high pressure fuel pump to a predetermined high pressure; andvapor management means for stopping, at the time of engine start up, a pressure adjustment function of the low pressure pressure regulator, supplying all fuel discharged from said low pressure fuel pump to said high pressure fuel pump, and returning fuel of said high pressure fuel system by bypassing said high pressure pressure regulator.