Patent ID: 6336595
Filing Date: 2002-01-08
Classification: F02M

Abstract:
A fuel injector comprising a valve needle slidable within a bore, a surface associated with the valve needle being exposed to a fuel pressure within a control chamber, an electromagnetically actuable control valve controlling communication between the control chamber and a low pressure chamber, and a means for damping pressure waves applied to the low pressure chamber, said means for damping comprises a volume for containing gas, in use, the volume communicating with the low pressure chamber, the volume defined by a blind drilling in an actuator housing, said actuator housing defining a return passage and an actuator compartment having an actuator disposed therein, said blind drilling being oriented, in use, with its blind end uppermost to retain the gas therein, said blind drilling being separate and distinct from each of said return passage and said actuator compartment, said blind drilling further being spaced apart from said actuator and said actuator compartment by said actuator housing.