Fuel injector method and apparatus
Number of patents in Portfolio can not be more than 2000
United States of America
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Nov 28, 1995
Grant Date -
N/A
app pub date -
Jan 29, 1993
filing date -
Mar 28, 1990
priority date (Note) -
In Force
status (Latency Note)
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Abstract
One spring and two spring embodimenls of a fuel injection having a nozzle body and needle valve with cooperating inner and outer metering rings providing a metering passage which (a) meters fuel at a reduced rate during an initial increment of valve lift, (b) assists in maintaining fuel pressure at the valve seat to reduce fuel dribble and cavitation erosion during a corresponding last increment or valve closure and (c) dampens secondary pressure waves to prevent secondary fuel injection.
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