Ultrasonically activated fuel injector needle
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United States of America Patent
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Issued Date -
Mar 5, 2009
app pub date -
Aug 27, 2008
filing date -
Aug 28, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A fuel injector intended for use on an internal combustion engine contains an injector needle that is longitudinally driven by an ultrasonic actuator during the time the injector valve is open to provide an atomized fuel spray output of sub-micron droplet sizes. A piezoelectric disk stack is mounted within the injector housing to surround a portion of the injector needle component and is used to provide the mechanical ultrasonic stimulation to the injector valve at the end of the injector needle and set up a corresponding wave-front at the injector valve to atomize the fuel as it leaves the injector nozzle.
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