Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1997-06-25
1999-03-30
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
F02M 5500
Patent
active
058875735
ABSTRACT:
A fuel circuit for a fuel system including a fuel tank, a fuel injection system, and a fuel filter assembly. Excess fuel flow is recirculated from the fuel injection pump to the base of the fuel filter. The base includes an internal recirculated fuel passageway which is in fluid communication with the fuel injection pump and the fuel tank, an internal fuel inlet plenum that is in fluid communication with the fuel tank, and an internal fuel outlet passageway which is in fluid communication with the fuel injection system. An opening provides fluid communication between the recirculated fuel passageway and the fuel inlet plenum. A thermal flow control valve is positioned in the recirculated fuel passageway to open the opening when the recirculated fuel temperature is below a predetermined temperature and to close the opening when the recirculated fuel temperature is above the predetermined temperature. For pressurized fuel systems, a constant vent passageway provides fluid communication between the fuel outlet passageway and the recirculated fuel passageway to vent air from the filter assembly.
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patent: 5263456 (1993-11-01), Owen-Evans
patent: 5269276 (1993-12-01), Brown
Atwood Richard E.
Janik Leon P.
Williams Michael J.
Moulis Thomas N.
Stanadyne Automotive Corp.
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