Patent ID: 7424883
Filing Date: 2008-09-16
Classification: F02M

Abstract:
1. 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; a valve member moveable relative to the housing between a closed position in which fuel within the fuel chamber is inhibited against exhaustion from the housing via the at least one exhaust port, and an open position in which fuel is exhaustable from the housing via the at least one exhaust port; and an ultrasonic waveguide separate from the housing and valve member, substantially the entire ultrasonic waveguide being disposed within the fuel chamber to ultrasonically excite fuel within the fuel chamber prior to said fuel exiting through the at least one exhaust port in the open position of the valve member; and an excitation device operable in the open position of the valve member to ultrasonically excite said ultrasonic waveguide.