Patent ID: 6648610
Filing Date: 2003-11-18
Classification: F02M,Y10T

Abstract:
A fuel system arranged to deliver fuel at high pressure to a fuel injector through a high pressure fuel line, the fuel system including a pressure relief valve arrangement for relieving fuel pressure within the high pressure fuel line, the pressure relief valve arrangement including:a first housing part defining a first valve surface and a second housing part defining a second valve surface, wherein the high pressure fuel line is defined, at least in part, within the first and second housing parts and wherein the first valve surface is engageable with but separable from the second valve surface; and a clamping arrangement for applying a clamping load to at least one of the first and second housing parts so as to urge the first and second valve surfaces into substantially sealing engagement with one another, wherein the clamping arrangement is arranged to permit separation of the first and second valve surfaces, against the clamping load, in the event that fuel pressure within the high pressure fuel line exceeds a predetermined amount, thereby to relieve fuel pressure within the high pressure fuel line.