Fuel injector
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United States of America Patent
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Oct 18, 2016
Grant Date -
Jun 20, 2013
app pub date -
Dec 4, 2012
filing date -
Dec 14, 2011
priority date (Note) -
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Abstract
The present invention relates to a fuel injector for use in a fuel system of an internal combustion engine. The fuel injector has a supply passage for high pressure fuel and an injection nozzle. The injection nozzle includes a valve needle which can engage with a valve needle seating to control fuel delivery from the fuel injector. A first control valve is provided for controlling fuel pressure within a control chamber to control the valve needle. The fuel injector also includes a second control valve for controlling fuel pressure within a low pressure drain. The invention also relates to a control valve for controlling fuel pressure within a low pressure drain.
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