Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-07-05
1997-10-07
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123497, 137510, 137907, F02M 4100
Patent
active
056736703
ABSTRACT:
In one embodiment of the present invention, a "returnless" fuel system for a motor vehicle is disclosed. A "series-pass" fuel pressure regulator in the system provides fuel of a regulated pressure to a fuel rail comprising at least one fuel injector. A "bypass" fuel pressure regulator provides fuel with a regulated pressure to the series pass regulator. An in-line fuel filter is located downstream from the bypass regulator, such that only the fuel which reaches the series-pass regulator is filtered. A check valve is located downstream from the bypass regulator as well, to prevent fuel pressure bleed-down through the fuel pump and the bypass regulator. A pressure relief valve is coupled to allow fuel with a pressure above a predetermined value to flow around the check valve.
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Five photographs of a Purolator brand fuel pressure regulator, effective date unknown.
Blanton Brian Michael
Mitchell, Jr. James Witherspoon
Petrich Kyle Lance
Powell Alvin Arthur
Wattleworth Robert Eugene
Ford Motor Company
Miller Carl S.
Sparschu Mark S.
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