Fuel Delivery System

摘要

A fuel delivery system for an internal combustion engine, the system comprising at least one fuel injector (40), said fuel injector (40) comprising a control chamber having an inlet for receiving highly pressurised fuel and an outlet enabling fuel to flow out of the control chamber into a back-leak passage (45) associated with the fuel injector (40), wherein the fuel injector (40) is operable between an injecting state and a non-injecting state in dependence on the fuel pressure within the control chamber. The system further includes pressure regulating means (50) for regulating the fuel pressure within the back-leak passage (45) so as to maintain the injector back-leak pressure at a predetermined target value.