Fuel system
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United States of America Patent
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Aug 20, 2013
Grant Date -
Jul 17, 2008
app pub date -
Dec 27, 2007
filing date -
Jan 11, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A system comprises a pressure raising valve having a valve member movable within a bore between a closed position and an open position in which fuel supplied to the pressure raising valve from a metering valve, in use, is delivered to an engine manifold, the valve member being urged towards its closed position by the fuel pressure within a control chamber, the pressure raising valve including a low pressure port which communicates with the control chamber when the valve member is in its closed position, the valve member closing the low pressure port upon movement thereof away from its closed position beyond a predetermined distance.
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