Internal-combustion engines – Charge forming device – Heating of combustible mixture
Reexamination Certificate
2000-03-03
2001-05-29
McMahon, Marguerite (Department: 3747)
Internal-combustion engines
Charge forming device
Heating of combustible mixture
C123S538000
Reexamination Certificate
active
06237576
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to engines, and more particularly to an improved engine system employing a vaporized fuel delivery system.
Heretofore, typical engine fuel delivery systems have supplied liquid fuel and system/ambient temperature to either fuel injection systems or, with older vehicles, to naturally aspirated carburetion. However, the internal combustion engine employing such fuel delivery has major drawbacks pertaining to air quality standards. The millions of vehicles producing exhaust emissions affect worldwide populations with changes to weather patterns. Also, people are developing new health reactions due to dangerous levels of these exhaust emissions. Further, poor air quality is responsible for the deterioration of natural products such as rubber, buildings, statues and the like. Dangerously high levels of ground level ozone are present in many areas, while upper atmosphere ozone layers are being depleted, fueling concerns about ultraviolet rays from the sun.
These prior systems use liquid fuel delivered to an internal combustion engine. The fuel is sprayed as a liquid mist in to an intake manifold. As the fuel is atomized, upon entry to the intake manifold, it is hoped that the mist will eventually be converted to a vapor when exposed to a partial vacuum within the intake manifold on its way to the combustion chamber. The partial vacuum naturally lowers the boiling point of the liquid fuel. Prior attempts have been made to produce a 100% vaporized fuel, delivered separately to each cylinder of an engine. However, heretofore, these systems have not been successful.
SUMMARY OF THE INVENTION
In accordance with the invention, an improved fuel delivery system employs pre-vaporization of a fuel, suitably by RF inductive heating. The vaporized fuel is provided to the engine intake or to the cylinders.
Accordingly, it is an object of the present invention to provide an improved engine fuel delivery system that results in a significant reduction of tailpipe emissions.
It is a further object of the present invention to provide a clean air solution for diesel, LPG and gasoline power engines.
It is yet another object of the present invention to provide an improved engine with reduced fuel consumption and operating costs.
Yet another object of the invention is to provide an improved engine system with lower buildup of carbon and other foreign matter in the engine.
A further object of the present invention is to provide an improved engine with significant extension of vehicle maintenance cycle.
The subject matter of the present invention is particularly pointed out and distinctly claimed in the concluding portion of this specification. However, both the organization and method of operation, together with further advantages and objects thereof, may best be understood by reference to the following description taken in connection with accompanying drawings wherein like reference characters refer to like elements.
REFERENCES:
patent: 4064852 (1977-12-01), Fulenwider
patent: 5070852 (1991-12-01), Po et al.
patent: 5876195 (1999-03-01), Early
Buccino Giuseppe
Buccino Virginia
Marger Johnson & McCollom PC
McMahon Marguerite
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