System for maintaining a pump inlet pressure
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United States of America Patent
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N/A
Issued Date -
Aug 27, 2009
app pub date -
Feb 25, 2008
filing date -
Feb 25, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A fuel system is disclosed. The fuel system has a first pump configured to provide fuel at a first pressure. The fuel system also has a control valve disposed downstream of the first pump, the control valve being configured to selectively direct the fuel at the first pressure to a treatment device and a regulator valve. The fuel system further has a fuel filter disposed downstream of the regulator valve. The fuel system also has a second pump disposed downstream of the fuel filter. The fuel system further has a relief valve disposed downstream of the fuel filter and upstream of the second pump, the relief valve being configured to maintain fuel upstream of the second pump at a second pressure that is different from the first pressure.
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