Abstract: This carburetion system for automobiles serves to increase gasoline mileage greatly, and it consists primarily of a regulator for metering drops of fuel onto a motor-driven fan in a fuel and air mixing chamber. It further includes a heat expansion cylinder connected to the mixing chamber, so as to vaporize the mixture fully and completely by exhaust gases of the engine, prior to the fuel and air gas entering the cylinders of the automobile engine.

Abstract: An intake heating device of an engine, comprising a hollow heater vessel placed in the intake passage. The heater vessel comprises an inner pipe, an outer pipe, and a plurality of PTC elements. The inner pipe and the outer pipe are interconnected to each other in such a way that the upper end and the lower end of the inner pipe are bent outwards and pressed onto the outer wall of the outer pipe.

Abstract: An intake heating device of an engine, comprising a hollow heater vessel placed in the intake passage. The heater vessel comprises an inner pipe, an outer pipe, and a plurality of PTC elements inserted between the inner pipe and the outer pipe. The outer wall of the inner pipe is surrounded by a belt-like insulating member having a plurality of rectangular holes. The PTC elements are inserted into the rectangular holes and held in a predetermined position by the insulating member.

Abstract: A fuel conservation device for internal combustion engines of vehicles, or the like, comprising a housing interposed between the usual fuel pump and carburetor of the engine, the housing having two compartments, a heating element disposed in one of the compartments, the other of said compartments having an inlet in communication with the fuel pump for receiving raw fuel therefrom and an outlet for discharging vaporized fuel therefrom, a level control device disposed in the second mentioned compartment for controlling the fluid level therein, a secondary carburetor interposed between the housing and the carburetor of the engine and in communication with the outlet of the housing and the throat of the usual carburetor for directing the vaporized fuel into the carburetor for passage therethrough to the engine combustion chamber, the heating element providing heat for the second compartment for vaporization of the fuel therein whereby substantially completely vaporized fuel is delivered to the combustion chamber

Abstract: A fuel system especially designed for use with an internal combustion engine or the like in which fuel system is operable therewith to provide fuel fumes or vapor to the engine from a source of liquid ignitable vaporizable fuel, such as gasoline, of sufficient quantity whereby to significantly increase the efficiency of the engine and thus substantially increase the per gallon mileage rate for the engine when used in an automotive vehicle or the like, and one using liquid fuel as the original fuel source. The system includes improved means for fuming the liquid fuel.

Abstract: A method and apparatus for liquefying a liquid fuel in a fuel supply circuit comprising a filter member, is characterized in that the fuel is heated in the circuit immediately upstream of the filter member. The method and apparatus have particular application in liquefying diesel oil before injection or heating a fuel before metering in a diesel engine.

Abstract: A fuel mixture heating device of an internal combustion engine having a downdraft type carburetor mounted on the collecting portion of the intake manifold. A hollow cylindrical heater vessel is arranged at the lower end of the air horn of the carburetor. The heater vessel comprises an inner pipe, an outer pipe and PTC elements inserted between the inner pipe and the outer pipe for heating the inner pipe before the completion of warm-up of the engine. The inner pipe, having an inner diameter which is almost the same as that of the air horn, is arranged to be aligned with the air horn. The outer pipe is made of a heat insulating material.

Abstract: Diesel engine fuel treating means which heats the fuel flowing from the fuel tank to the engine also furnishes heat to the fuel in the tank, provides for removal of contaminants, and inhibits gelling and wax solidification. In some embodiments the heating device is incorporated in the fuel tank, and includes a fuel filter intimately associated with the treating device but accessible outside the tank. In another embodiment the treating device is located outside the tank and includes two fuel heating circuits, one for fuel flowing to the engine and the other for preheating the main fuel supply in the tank. A third embodiment has an axial tubular member which conducts heated and filtered fuel from a top-mounted spin-on filter back through the heating chamber in a second pass and also forms a clamping device for a removable cover and an attaching and fluid coupling device for the filter.

Abstract: 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.

Abstract: A fuel mixture heating device of an internal combustion engine having a downdraft type carburetor mounted on the collecting portion of the intake manifold. A hollow cylindrical heater vessel is arranged at the lower end of the air horn of the carburetor. The heater vessel comprises an inner pipe, an outer pipe and a PTC elements inserted between the inner pipe and the outer pipe for heating the inner pipe before the completion of warm-up of the engine. The inner pipe, having an inner diameter which is almost the same as that of the air horn, is arranged to be aligned with the air horn.

Abstract: A fuel pre-heater including a compartment for receiving fuel, a hollow metal member passing centrally through the fuel space in the compartment and coupled to the liquid cooling system of an internal combustion engine for transferring heat to the fuel, a length of a hollow pipe of insulation plastic material disposed within the hollow metal member and for regulating and controlling water flow therethrough to a heat transfer surface of the hollow metal member so that the heat transferred therefrom is received by the fuel and the fuel, being thus pre-heated, passes to the engine. The hollow plastic pipe regulates the water flow and controls the rate of heat transfer through and around it by an arrangement of apertures therein. The plastic pipe may be of polyvinyl chloride. The compartment may have a bracket for mounting it securely upon a wall in the engine compartment of the vehicle.

Abstract: A temperature-controlling system for a fuel supply line characterized by a simple and inexpensive thermostatically controlled valve positioned within the flow, and sensitive to the temperature, of the fuel before it has been mixed with bypassed and heated fuel. The valve modulates the flow bypassed through a heat exchanger, which flow later joins the stream of fuel which has not been bypassed and heated.

Abstract: An internal gear pump motor having a housing, a pinion and an internal gear rotatably supported in the housing and meshing with each other, and filler piece means located in a space defined between the pinion and internal gear for dividing the space into two regions providing a low pressure region and a high pressure region during operation. The filler piece means includes at least one filler piece floatingly mounted within the space and having portions capable of coming into sliding engagement with tooth crests of the pinion and internal gear respectively in a portion of the space where the distance between the tooth crests of the pinion and internal gear is reduced toward the low pressure region. A stopper pin is secured to the housing operative to engage one end of the filler piece on the side of the low pressure region for restricting the circumferential movement of the filler piece toward the low pressure region.

Abstract: A suction heating device for an internal combustion engine including a first metal member having a planar portion and a cylindrical portion extending from the flat portion for defining a passage for a fuel-air mixture, and a second metal member having a planar portion and a cylindrical portion extending from the planar portion and arranged outside the cylindrical portion of the first metal member with a predetermined spacing. The two cylindrical portions are joined to each other at the end to provide a casing for mounting therein a ceramic heater of positive temperature coefficient characteristic having a specific Curie point.

Abstract: An apparatus for producing a defined fuel vapor-air mixture for engines with an intake manifold. The apparatus including a float chamber and a vaporizing chamber accommodating a heated vaporizer surface. The intake manifold is provided with a first fixed restrictor or nozzle and a liquid space of the float chamber and a liquid space of the vaporizing chamber are connected with each other by a conduit. A gas space of the float chamber, as seen in a flow direction upstream of the first restrictor or nozzle, and a gas space of the vaporizing chamber as seen in a flow direction downstream of the restrictor or nozzle, are respectively connected to the intake manifold by means of conduits. A conduit from the gas space of the vaporizing chamber into the intake manifold is provided with a second fixed restrictor or nozzle causing a pressure drop of about 85%-99.99% of the first restrictor or nozzle.

Abstract: An intake expansion chamber apparatus (10) for internal combustion engines is disclosed which preheats and expands the vaporized fuel/air mixture as the mixture flows between the carburetor and the combustion chamber. The apparatus includes an expansion chamber section (18) through which the fuel/air mixture flows between an inlet (20) connected in fluid communication with the intake manifold and an outlet (26) joined in fluid communication with the intake manifold at a location downstream from the outlet. The fuel/air mixture is heated during its passage through the expansion chamber by a heat transfer surface (30) to improve the vaporization and to more completely combust the hydrocarbons upon ignition. A safety valve (46) is provided to release pressure built up within the expansion chamber as during an engine backfire.

Abstract: A fuel evaporation device for enhancing fuel evaporation in an automotive fuel supply system without excessively interfering with the flow of an air-fuel mixture to an automotive engine is particularly adapted for use where the system has an air-fuel passage directing the air-fuel mixture into an intake manifold and where fuel tends to condense on the walls of the passage during engine start up on cold days.

Abstract: The present invention relates to a system for achieving improved fuel consumption of internal combustion engines. Both water cooled gasoline and diesel engines are considered as applicable for the utilization of this invention. This invention provides an added segment to the typical fuel line of such engines. Such added segment consists of an elongated U-shaped loop which passes through a cover seal of a typical freeze plug, carrying the fuel line into the coolant chamber of the engine between the cylinders of the engine. The highly elevated temperatures of such coolant are used to transfer heat to the fuel prior to the fuel being delivered to the combustion chamber, thereby preheating the fuel and enabling more efficient combustion.

Abstract: A fuel filter system for a diesel engine has filter means mounted in a housing so that diesel fuel flows through the filter as it passes to the engine and has self-regulating electrical resistance heater means mounted in the housing so that, particularly when the engine is started at low ambient temperatures, the fuel flows directly over the contacts, terminals and heater elements of the heater means for elevating the temperature of the fuel as it passes through the filter without risk of over heating the fuel, thereby to safely deter clogging of the filter by paraffin or other fuel components which may solidify in the fuel at relatively low engine starting temperatures.

Abstract: A self-regulating electrically heated positive-temperature-coefficient (hereinafter PTC) carburetor stove for use in the fuel entry system of a gasoline engine is connected through the ignition system directly to the battery for rapidly heating of the stove upon starting of the car. This system comprises a plurality of PTC pills housed in a container with a high thermal conductivity top plate in direct heat transfer relation with the pills. Gasoline droplets are evaporated on this plate during cold start conditions to minimize the need to run a cold engine in the closed choke gasoline rich mode. During heat-up of the engine the PTC pills reach the anomaly temperature and at that point greatly increase their resistance thereby virtually terminating the power requirement of the stove in the heated engine mode.