Diesel engine fuel system and method of priming

Details Diesel engine fuel system and method of priming Diesel engine fuel system and method of priming

1997-11-18

1999-05-04

Miller, Carl S.

Internal-combustion engines

Charge forming device

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

12317917, 12317911, F02M 3704

Patent

active

058991930

ABSTRACT:
A fuel system and method for priming a diesel engine fuel system after assembly or when run out of fuel in which the system has a filter that can trap air allowing drainback of fuel to the tank. The system is provided with a fuel priming connection to the injection pump inlet, the connection having a closure for shutting the connection when not in use. A mechanically openable check valve, such as a Schraeder valve, is a preferred form of closure. The system is primed by reverse flow of fuel from the priming connection through the filter to the fuel tank to virtually eliminate trapped air from the system. The engine may then be started with a minimum of cranking. The engine may be restarted after running out of fuel by partially filling the tank and operating the normal feed pump while bleeding air from the system through the priming connection, which is closed prior to engine starting. The engine may then be reprimed after shutdown if required.

REFERENCES:
patent: 1495315 (1924-05-01), Ball
patent: 4625694 (1986-12-01), Adey
patent: 4694810 (1987-09-01), Miyamoto
patent: 4984554 (1991-01-01), Ariga
patent: 5103793 (1992-04-01), Riese
patent: 5231967 (1993-08-01), Baltz
patent: 5762050 (1998-06-01), Gonzalez

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