초록 ▼

An improved 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 in order to maintain the temperature of

An improved 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 in order to maintain the temperature of the fuel entering the carburetor bowl to just above the temperature of vaporization for the fuel. The system basically comprises a plurality of staged fuel/hot water heat exchangers, a fuel controller interposed between the heat exchanger and the carburetor bowl, a hot water control valve operably connected to a temperature sensor in the controller to control the flow of hot water through the heat exchanger and hence, the temperature of the fuel entering the controller, and a second fresh air fuel/exhaust manifold heat exchanger constructed as a part of the controller to satisfy initial heating requirements for the fuel for a period after cold engine starting and for events of undersizing of the staged hot water heat exchanger.

대표청구항 ▼

A circulating fuel heating system for internal combustion engines having a carburetor, said system comprising heat exchanger means for raising the temperature of the fuel to beyond its vaporization temperature, pump means for delivering fuel to said heat exchanger means, a fluid heat source carried

A circulating fuel heating system for internal combustion engines having a carburetor, said system comprising heat exchanger means for raising the temperature of the fuel to beyond its vaporization temperature, pump means for delivering fuel to said heat exchanger means, a fluid heat source carried by the engine and operably connected to the heat exchanger means, a fluid heat flow control valve operably connected to the heat exchanger for selectively controlling the flow of heated fluid from the fluid heat source through the heat exchanger means, a fuel controller means operably connected between the heat exchanger means and the carburetor, return control means operably connected between the controller means and the pump means for the routing of unused fuel back to said pump means, a first temperature sensor carried by the controller means and operably connected to the fluid heat flow control valve for regulating the flow of fluid from the fluid heat source through the heat exchanger means to maintain the temperature of the fuel in the controller within a predetermined range above its temperature of vaporization.