Importance

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Abstract

A method and apparatus for an internal combustion engine liquid fuel delivery system includes an electrical power source to preheat fuel to a maximum temperature for the fuel to remain in the liquid phase just below the fuel vaporization. Preheating takes place immediately before delivery to the engine's carburetor. Fuel is heated in a dual coil assembly having an adjustable valve that controls the volume of fuel flowing through the heating assembly. A temperature control apparatus maintains the fuel temperature at fuel pre-vaporization temperature. The retrofit system includes a solenoid that selectively directs fuel through either the fuel delivery preheating system or the engine's existing fuel delivery system. An operator's control panel for activating or deactivating the solenoid-controlled valve means and the preheating device is located inside the driver's compartment. The control panel allows the vehicle operator to set a desired preselected temperature and displays the actual temperature of the fuel entering the carburetor. Preheating fuel to a maximum preselected temperature immediately before entering the carburetor effects maximum expansion of liquid fuel, improved fuel-air mixture, and a more complete burning which substantially and unexpectedly improves output horsepower and fuel economy while reducing engine component carbon sediment and gaseous exhaust atmospheric pollutants.

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First Claim