Patent ID: 8028930

Claim:
A fuel injector for delivering fuel to an engine, the fuel injector comprising: a housing having an internal fuel chamber and at least one exhaust port in fluid communication with the fuel chamber whereby fuel exits the fuel injector at the at least one exhaust port for delivery to the engine; an ultrasonic waveguide separate from the housing, said waveguide being elongate and disposed at least in part within the fuel chamber to ultrasonically energize fuel within the fuel chamber prior to said fuel exiting through the at least one exhaust port; an excitation device operable to ultrasonically excite said ultrasonic waveguide; and a mounting member interconnecting the waveguide to the housing, said mounting member being configured to substantially vibrationally isolate the housing from the waveguide such that the housing is substantially free from vibrating with the waveguide at the at least one exhaust port of the housing, said mounting member being disposed between the waveguide and the housing.