INJECTOR FOR A FUEL INJECTION SYSTEM
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United States of America Patent
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Issued Date -
Sep 17, 2009
app pub date -
Jun 4, 2007
filing date -
Aug 4, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A leak-free injector is proposed, the closing force of which is increased by a closing piston. An injector has a nozzle needle and a control valve, the nozzle needle being guided in an injector housing and cooperating with a nozzle needle seat of the injector housing. A high-pressure chamber is present between the control valve and the nozzle needle seat, and the closing piston is provided on the nozzle needle. The closing piston subdivides the high-pressure chamber into a first region and a second region. The two regions of the high-pressure chamber communicate hydraulically via a closing throttle restriction.
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