Patent ID: 6254364
Filing Date: 2001-07-03
Classification: F04B

Abstract:
A high-pressure fuel supply assembly comprising:a low-pressure damper for absorbing surges in fuel flowing in from a fuel tank, said low-pressure damper including a low-pressure damper weld portion forming a seal between a first member and a second member which are contacted by said fuel;a high-pressure fuel pump for pressurizing fuel from said low-pressure damper and discharging said fuel into a high-pressure fuel discharge passage, said high-pressure fuel pump being connected to said low-pressure damper by means of a low-pressure fuel intake passage, and said high-pressure fuel pump including a high-pressure fuel pump weld portion forming a seal between a third member and a fourth member which are contacted by said fuel; anda high-pressure regulator for adjusting the pressure of the high-pressure fuel from said high-pressure fuel pump to a predetermined pressure, said high-pressure regulator including a high-pressure regulator weld portion forming a seal between a fifth member and a sixth member which are contacted by said fuel,said first, third, and fifth members being composed of stainless steel and said second, fourth, and sixth member being composed of plated low-carbon steel in at least one weld portion among said low-pressure damper weld portion, said high-pressure fuel pump weld portion, and said high-pressure regulator weld portion.