Abstract: An electrically heated screen arrangement operated from a vehicle battery and automatically controlled to heat the fuel mixture. The fuel mixture provided by the carburetor of the vehicle is drawn through the present system which comprises an outlet conduit from the carburetor delivering fuel mixture through a housing which is closed by a special screen that is electrically heated to the proper temperature and then through a passageway and a cooling device comprising a screen in relationship together with a ceramic filter in a housing. The temperature of the screen is sensed and monitored. Several screens and coolers may be mounted in series.

Abstract: A housing located between a conventional carburetor and the intake manifold inlet on a conventional internal combustion engine (such as that used in an automobile) has internal compartmentation to receive a volume of fuel and air mixture from the carburetor and to direct same through an outlet compartment and thence through a conduit to a fuel mixture heat exchanger mounted on the engine. The heat exchanger comprises one or more heat exchanger units each having a closed cylindrical housing with a plurality of closed, individual fuel mixture conduits therein (such as copper tubing). Each cylindrical housing is connected by a conduit, such as a hose, to the hot air exhaust manifold of the engine so that the heated air from the manifold is directed through each housing and around the heat exchanger tubes therein. A filter unit comprises a closed housing which receives the heated fuel through a porous screen baffle and a series of conventional ceramic or foam plastic or other types of filter material.