Engine fuel supply system

Details Engine fuel supply system Engine fuel supply system

1998-06-16

2000-05-30

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

123516, F02M 3704

Patent

active

060679662

ABSTRACT:
A fuel supply system for providing fuel from a fuel source to a combustion chamber of an engine is disclosed. The fuel supply system includes a vapor separator in which vapor is separated from fuel supplied from the fuel source. A pre-pressurizing pump pressurizes fuel from the vapor separator to a first pressure and delivers it to a high pressure pump. The high pressure pump pressurizes the fuel to a pressure above the first pressure and delivers it to a fuel rail to which is connected a fuel injector for delivering fuel into the combustion chamber. A fuel return line extends from the fuel rail for returning undelivered fuel back to the fuel system. A valve controls the flow of fuel through the return line and maintains the fuel at high pressure in the fuel rail. A fuel cooler is provided along the return fuel line.

REFERENCES:
patent: 5579740 (1996-12-01), Cotton et al.
patent: 5758622 (1998-06-01), Rembold et al.
patent: 5797378 (1998-08-01), Kato
patent: 5832902 (1998-11-01), Davis et al.
patent: 5855197 (1999-01-01), Kato
patent: 5890472 (1999-04-01), Saito

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