Fuel system having variable injection pressure
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United States of America Patent
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Sep 15, 2009
Grant Date -
May 10, 2007
app pub date -
Nov 9, 2005
filing date -
Nov 9, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A fuel injector for a work machine is disclosed. The fuel injector has nozzle member having at least one orifice and a needle valve element having a tip end. The needle valve element is axially movable to selectively allow and block fuel flow through the at least one orifice with the tip end. The fuel injector also has at least one supply passageway in communication with the tip end of the needle valve and a variable restrictive device disposed within the at least one supply passageway.
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