Internal-combustion engines – Charge forming device – Fuel flow regulation between the pump and the charge-forming...
Reexamination Certificate
1999-11-17
2003-08-05
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel flow regulation between the pump and the charge-forming...
C123S1980DB
Reexamination Certificate
active
06601568
ABSTRACT:
This invention generally relates to method and apparatus for maintaining full fuel in a fuel supply line, and more specifically to a supply line of a diesel burning system.
BACKGROUND OF THE INVENTION
Non-ignition type engines such as diesel engines have been around for years. Unlike gas combustion engines which operate by vaporizing a fuel chamber with fuel and igniting the fuel with sparks, commonly from a spark plug, diesel engines operate under high pressure and without any sparks. At a certain range of pressure and temperature, diesel fuel self ignites in an exothermic reaction to give off the necessary energy or power to propel the engine.
However, diesel engines have several shortcomings. Among them, when a diesel supply reservoir runs low on fuel, the fuel supply line typically becomes less “full” and at some point even dries up and “gases” up (rather than staying filled with “liquid” diesel fuel), leading ultimately to a loss of power from fuel starvation. When the reservoir is refueled, engine startup is not necessarily guaranteed. Trapped air in the fuel line can prevent fuel from properly filling and flowing, a symptom commonly referred to as “vapor lock”. More often than not, the vapor must be purged from the line before the fuel line can properly be filled, a task is typically costly (if the user has to take the vehicle in for repair), inconvenient, and time consuming.
OBJECTS AND ADVANTAGES OF THE INVENTION
It is therefore an object of the present invention to supply an apparatus (which, as used herein, includes any system or any physical embodiment of the present invention) and related method capable of maintaining a full fuel line despite having the fuel reservoir running low or even empty. The preferred embodiment of the invention includes fuel sensors, a shut-off valve, and a check valve for isolating the fuel line from the engine and the reservoir until the reservoir can be refueled.
It is a further object of the invention to supply a fuel line of the aforementioned character in which the fuel line is capable of immediate fuel flow without first purging the line of entrapped gas.
Another object of the present invention is to supply a fuel line that is unaffected by the engine status or the reservoir level.
REFERENCES:
patent: 2297238 (1942-09-01), Neugebauer et al.
patent: 2918911 (1959-12-01), Guiot
patent: 3202143 (1965-08-01), Goodwin
patent: 3590798 (1971-07-01), Goodwin
patent: 3738346 (1973-06-01), Goodman
patent: 4020814 (1977-05-01), Hewitt et al.
patent: 4187824 (1980-02-01), Connolly
patent: 4265262 (1981-05-01), Hotine
patent: 4294204 (1981-10-01), Hurner
patent: 4763621 (1988-08-01), Stevens
patent: 5105663 (1992-04-01), Kuhlen
patent: 5201298 (1993-04-01), Shearn
patent: 5526793 (1996-06-01), Johansson
patent: 5576582 (1996-11-01), White
patent: 5715797 (1998-02-01), Minagawa et al.
patent: 5881698 (1999-03-01), Tuckey et al.
patent: 5894857 (1999-04-01), Takaki et al.
patent: 5913294 (1999-06-01), Takahashi et al.
patent: 3411539 (1984-01-01), None
patent: 19612413 (1997-10-01), None
patent: 851213 (1960-10-01), None
patent: 1168489 (1969-10-01), None
patent: 1222820 (1971-02-01), None
patent: 2 140 091 (1984-11-01), None
Holland J. Mark
Miller Carl S.
LandOfFree
Diesel fuel re-priming device for fuel burning apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diesel fuel re-priming device for fuel burning apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diesel fuel re-priming device for fuel burning apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3098773