Circulating fuel heating system for internal combustion engines
OwnerTheron H. Craininventor
Life of this patent
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Abstract
A circulating fuel heating system for internal combustion engines of both gas and diesel types. The system is sizeable through staged heat exchanger components to provide the necessary fuel heating for various engine sizes and fuel consumption rates. The system basically comprises a plurality of staged fuel/hot water heat exchangers, a fuel controller interposed between the heat exchangers and the carburetor bowl, a by-pass/metering valve and a vapor capture system for returning unused fuel to the heat exchanger and a fuel/exhaust manifold heat exchanger operably connected to the controller to satisfy initial heating requirements for the period after cold-engine starting.
Claims16
A circulating fuel heating system for internal combustion engines having a carburetor, said system comprising
- heat exchanger means for raising fuel to beyond its vaporization temperature, pump means for delivering fuel to said heat exchanger means, a heat source carried by the engine and operably connected to the heat exchanger means for raising the temperature of said fuel, a fuel flow controller operably connected between the heat exchanger means and the carburetor, return control means operably connected between the fuel flow controller and the pump means for routing a first portion of unused fuel back to said pump means and a vapor capture means operably connected between the carburetor and the pump means for routing a second portion of unused fuel back to the pump means.
Dependencies are inferred from the claim text.