Hydraulically intensified injectors with passive valve and methods to help needle closing
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United States of America Patent
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Issued Date -
Aug 31, 2006
app pub date -
Feb 15, 2006
filing date -
Feb 28, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Hydraulically intensified injectors with passive valve and methods to help needle closing. In accordance with the method, at the end of injection, a passive valve is used to couple the expanding high pressure fuel remaining in the nozzle to temporarily hydraulically encourage the needle to close, thereby initiating needle closing prior to the time a needle return spring can start moving the needle to the closed position. Multiple embodiments are disclosed.
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