초록 ▼

A fuel preheating apparatus and method for use in conjunction with an internal combustion engine including a preheater wherein a flow of fuel to be heated is maintained in juxtaposition to a pair of selectively operable heat sources, one of which is a flow of engine coolant. An additional heat sourc

A fuel preheating apparatus and method for use in conjunction with an internal combustion engine including a preheater wherein a flow of fuel to be heated is maintained in juxtaposition to a pair of selectively operable heat sources, one of which is a flow of engine coolant. An additional heat source is provided to heat the flow of engine coolant through the preheater to thereby provide engine block warming during extended periods of engine shutdown.

대표청구항 ▼

In a preheater system for use in conjunction with an internal combustion engine, the combination comprising: a preheater body member; a fuel flow conducting channel defined within said body member and adapted to have a flow of fuel passed continuously therethrough; a pair of selectively operable hea

In a preheater system for use in conjunction with an internal combustion engine, the combination comprising: a preheater body member; a fuel flow conducting channel defined within said body member and adapted to have a flow of fuel passed continuously therethrough; a pair of selectively operable heat sources associated with said body member in heat exchange relationship with said fuel flow conducting channel for supplying energy to heat such a flow of fuel; at least one of said pair of heat sources including an engine block coolant flow conducting channel formed within said body member and adapted to sustain a continuous flow of engine coolant therethrough for recirculation of such engine coolant through said coolant flow conducting channel and the engine block; selectively operable control means for selecting operation of one of said pair of heat sources to supply energy for preheating said flow of fuel said pair of heat sources, including the engine coolant flow conducting channel, being located in a manner that the body member provides for heat transfer from said pair of heat sources to the flow of fuel passing through said fuel flow conducting channel, a selectively operable additional heater means carried by said body member for heating the flow of engine coolant within said engine coolant flow conducting channel, and a thermostatic control for limiting the heat input from said selectively operable additional heater means according to a preselected maximum temperature for said engine coolant.