Fuel injector with grooved check member
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United States of America Patent
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Apr 22, 2008
Grant Date -
Mar 1, 2007
app pub date -
Aug 25, 2005
filing date -
Aug 25, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for injecting fluid into a machine are disclosed. A fluid injector is disclosed having a nozzle body with at least one fluid injection orifice therein and being configured for transmitting fluid toward the injection orifice. The nozzle body may have a generally curved internal wall at an end portion of the nozzle body. A check member may be movably arranged inside the nozzle body for affecting fluid flow through the injection orifice. The check member may have (i) a recessed region on the surface of the check member and (ii) a generally curved region at an end portion of the check member. The check member may be movable to a flow blocking position in which (i) the check member engages the nozzle body to prevent fluid flow through the injection orifice, (ii) the recessed region is disposed proximate the injection orifice, and (iii) a chamber volume exists between the end portion of the nozzle body and the end portion of the check member.
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