Internally Nested Variable-Area Fuel Nozzle
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United States of America Patent
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Issued Date -
Mar 31, 2011
app pub date -
Sep 30, 2009
filing date -
Sep 30, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A nested fuel injector that includes an injector housing having a bore longitudinally therethrough, and a pintle assembled to the housing and positioned substantially within the bore. The pintle has a head located at an end of a cylindrical portion, wherein the head is seated in one end of the bore, and the seating of the head defines a variable-area exit orifice. A wave spring is assembled onto the pintle and configured to urge the pintle into the seating position. The bore is configured for the passage of a pressurized flow of fuel. The fuel pressure urges the pintle head away from the exit orifice to permit the pressurized fuel to flow from the bore out through the exit orifice.
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