Patent ID: 6871800

Claim:
A fuel injector which comprises a housing having an inlet for fuel from which fuel can be transferred into a cavity of the injector, at least one outlet orifice communicating with said cavity, a one-way valve carried by the housing operable to prevent fuel leaving the cavity other than by said outlet orifice, and ejecting means operable to reciprocate a piston within the housing, the piston having a force-applying end separated from the cavity by said one-way valve and a passage through the piston communicating with said force-applying end, said piston being operable in reciprocation to transfer fuel through said passage and to apply force to said transferred fuel by way of said force-applying end to cause transfer of said fuel into said cavity to be ejected through said orifice as discrete charges at predetermined intervals, said passage containing a one-way valve mounted adjacent to the force-applying end of the piston.