Patent ID: 6293296
Filing Date: 2001-09-25
Classification: F02M,F04B,Y10T

Abstract:
A high-pressure fuel pump device comprising a high-pressure pump for increasing the pressure of fuel to a high level and a high-pressure regulator for controlling the pressure of fuel by draining part of the fuel discharged from the high-pressure pump, whereinthe pump body of the high-pressure pump has a high-pressure valve connection portion on the exterior side including a high-pressure passage which is used to connect the high-pressure regulator, the valve housing of the high-pressure regulator has a high-pressure pump connection portion on the exterior side including a high-pressure passage which is used to connect the high-pressure pump, and the high-pressure valve connection portion and the high-pressure pump connection portion are connected to each other to assemble the high-pressure pump and the high-pressure regulator;wherein the valve housing has a drain return passage for returning fuel to the low-pressure passage of the high-pressure pump; andwherein the drain return passage is connected to the low-pressure passage on a downstream side of a filter.