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US 4,395,997 AGranted
Fuel pre-heater
OwnerDavid C. Lee, Sr.inventor
Life of this patent
Estimating the term…
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OwnerDavid C. Lee, Sr.inventor
Estimating the term…
A fuel pre-heater including a compartment for receiving fuel, a hollow metal member passing centrally through the fuel space in the compartment and coupled to the liquid cooling system of an internal combustion engine for transferring heat to the fuel, a length of a hollow pipe of insulation plastic material disposed within the hollow metal member and for regulating and controlling water flow therethrough to a heat transfer surface of the hollow metal member so that the heat transferred therefrom is received by the fuel and the fuel, being thus pre-heated, passes to the engine. The hollow plastic pipe regulates the water flow and controls the rate of heat transfer through and around it by an arrangement of apertures therein. The plastic pipe may be of polyvinyl chloride. The compartment may have a bracket for mounting it securely upon a wall in the engine compartment of the vehicle.
Fuel pre-heater apparatus for exchanging engine heat into heat for preheating fuel for an internal combustion engine and for regulating water flow control along a heat transfer surface thereof comprising a compartment formed by an enveloping wall, a hollow metal member passing centrally through the compartment having an inlet coupling and an outlet coupling, the inlet coupling and the outlet coupling each having an inner and outer tapering surface contour adapted for receiving thereon an end of a flexible hose coupled to the cooling system of an internal combustion engine, a length of a hollow pipe of insulation plastic of a diameter to be disposed within the hollow metal member and having ends thereof frictionally engaging respective inner tapering surface contours of the inlet coupling and the outlet coupling, the compartment at separate peripheral locations thereof having a fuel inlet line for receiving fuel into the compartment and a fuel outlet line for discharging preheated fuel from within the compartment to combustion chambers of an internal combustion engine wherein the hollow plastic pipe acts to control the heat of water flowing along the inner surface of the hollow metal member and helps to keep the fuel system cleaner and the carburetor operating smoothly.
Dependencies are inferred from the claim text.