Patent ID: 6609667
Filing Date: 2003-08-26
Classification: F02M

Abstract:
A fuel injection nozzle comprising:a nozzle body having in its interior a first fuel passage for the supply of fuel to an oil sump; a nozzle holder having in its interior a second fuel passage for the supply of fuel to the first fuel passage; a retaining nut for making a contact surface of the nozzle body and a contact surface of the nozzle holder come into contact with each other using a predetermined clamping axial force to ensure a high-pressure seal between the first and second fuel passages, wherein the retaining nut has a bearing portion, the bearing portion having an inner seating surface opposed to a seating surface of a shoulder portion of the nozzle body; and a frictional force reducing member interposed between the seating surface of the shoulder portion of the nozzle body and the inner seating surface of the bearing portion of the retaining nut to reduce a frictional force developed between both seating surfaces at the time of clamping.