Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Patent
1997-06-05
1998-08-18
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
123541, F02M 3704
Patent
active
057945985
ABSTRACT:
A fuel circuit for a fuel system including a fuel reservoir, a fuel injection system, a fuel lift pump, and a fuel filter assembly. The fuel circuit includes a fuel passageway for recirculating the excess fuel flow from the outlet of the fuel injection pump to the inlet of the fuel injection pump. The excess fuel flow, which is pressurized by the fuel injection pump, is preferentially utilized as the fuel source over fuel in the fuel reservoir, which is at a lower pressure. The fuel circuit may include a single fuel-to-air heat exchanger or a fuel-to-coolant heat exchanger and a coolant-to-air heat exchanger to remove heat from the excess fuel flow, depending on the amount of heat generated by the fuel injection system and the fuel lift pump and the expected ambient temperature conditions. Circulation pumps in the fuel passageway and the coolant line may be used to facilitate removal of heat in the two heat exchanger system.
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Janik Leon P.
Williams Michael J.
Moulis Thomas N.
Stanadyne Automotive Corp.
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