Abstract: A fuel system and electronic control therefor which is especially designed for use with an internal combustion engine or the like in which said fuel system is operable 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 incorporates an electronic control operable to monitor the combustion of the vaporizable fuel and which control is responsive to a change in engine demand for said fuel to maintain the optimum ratio of vaporized fuel and air in the mixture delivered to the engine for combustion.

Abstract: A preheating device, particularly adapted to preheat fuel to an internal combustion engine, includes a pair of resistive heating elements which are held in resilient compressive juxta-positional heat transfer relationship with a fluid conduit by a retaining clip.

Abstract: Gasoline treating apparatus for an automotive engine including a modulating heat exchanger heating the gasoline from the supply tank before directing the gasoline into the carburetor and utilizing heat from the engine coolant, the temperature of the heated gasoline being sensed for regulating the flow of the engine coolant; and an additional heater for the gasoline in the air-fuel mixture and obtaining heat for the additional heating from the engine coolant.

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 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 has a thin wall having a corrugated cross-section. The inner wall of the PTC elements are in contact with the outer wall of the inner pipe. An air gap is present between the outer pipe and the outer walls of the PTC elements. A plurality of plate springs is inserted between the outer pipe and the corresponding PTC elements.

Abstract: A smaller diameter tube mounted to an air inlet tube of the air cleaner is disposed in a larger diameter tube mounted on an exhaust manifold cover with an adequate clearance therebetween, so that the heated air in the interior of the exhaust manifold cover is dischargeable to the open air through the clearance.

Abstract: An engine starting apparatus for an extremely cold climate has a regenerator which stores heat of exhaust gas during operation of the engine. The regenerator has sufficient heat capacity to maintain the stored heat for at least 10 hours after stopping the engine. Suction gas to start the engine can be heated sufficiently to facilitate starting of the engine. Temperature control device mixes fresh air with air from the regenerator to obtain suitable suction temperature.

Abstract: In preferred embodiments, the pistons of a 4-stroke cycle diesel engine are provided with blowby storage chambers between two upper piston rings and a scavenging system to flush out blowby gases from the storage chambers when the pistons are at or near their bottom positions of piston motion. The scavenged blowby gas is recirculated to the engine induction system or may be conducted directly to the associated combustion chambers. The system reduces contamination of the engine lubricating oil with sooty particulates and other products in the blowby gases.

Abstract: A fuel heating apparatus for an internal combustion engine has a tubular extension member extending downwardly from the bottom end of an intake pipe into a mixture distribution chamber defined in an intake manifold beneath the inlet opening thereof connected to the intake pipe. An annular electric heater element is disposed in the mixture distribution chamber in vertical alignment with the tubular extension member so that the part of fuel which flows in liquid phase on the inner peripheral surfaces of the intake pipe and the tubular extension member falls therefrom onto the annular electric heater and heated and vaporized thereby and can be easily mixed with air from the intake pipe.

Abstract: An internal combustion engine is provided with an intake vacuum control device through which the upstream and downstream sides of an intake passageway with respect to a throttle valve are communicable with each other, so that additional air is supplied to the intake passageway downstream of the throttle valve during engine deceleration. The intake vacuum control device is composed of a valve member which is normally biased to be closed by a coil spring which is guided by a cylindrical guide member.

Abstract: A fuel evaporator comprises a metal member composed of a pipe portion and a flange portion, a heating element made of PTC ceramic, which is closely adhered to the metal member and an electric connector for electrically connecting the heating element and an electric power source. The metal member is supported by an insulating member which is interposed between an air-fuel passage and an intake manifold. The fuel film flow flowing downwards along the wall of the air-fuel passage is received by the flange portion of the metal member and is heated by the heat transmitted from the heating element. Consequently, unvaporized fuel is effectively evaporated.

Abstract: A system for vaporizing fuel and mixing it in controlled proportions with liquid fuel as a feed to a carburetor in an internal combustion engine comprising a vapor generator for heating liquid fuel to vaporize it, a jacket around the generator filled with a liquid heating medium, a means for controlling the heating of the liquid heating medium by exchange with the exhaust of the engine, a first temperature sensing means to detect when the vaporized fuel in the vapor generator reaches a predetermined value and signaling a controlled means to admit vaporized fuel to the feed line to the carburetor and correspondingly to reduce liquid fuel being fed to the carburetor, a second temperature sensing means in said jacket for controlling the amount of heat absorbed by the liquid heating medium from the exhaust, a first pressure regulator means in the vapor outlet of the vapor generator to direct vaporized fuel to the feed of the carburetor upon reaching a predetermined pressure in the vapor generator, and a second pr

Abstract: Gutter forming ribs are arranged on the valley walls of a V-type internal combustion engine to intercept excess lubricant passing downwardly to the oil sump and direct it first to the individual valve actuating cams of the camshaft for lubricating the cams and second to the lower portions of the piston skirts extending below their respective cylinders at the bottom of their travel to lubricate the piston skirt and cylinder walls.

Abstract: An injector arrangement is disclosed in which liquid fuel in variable quantities is received within an injector chamber in a continuous flow. The admitted fuel is stored and intermixed with hot high-pressure burnt gases retained from previous combustion period for timed injection during or near the end of the compression stroke. During the intermixing period in the injector chamber preheated liquid fuel is partly or fully vaporized. Cam operated linkage is set up to hold over the injector in an open position until hot high-pressure burnt gases of combustion can re-enter the injector chamber for the next fuel charge preparation. A variable delivery liquid fuel pump provides for fuel quantity regulation according to torque output requirements. A tiny capillary passage at the entrance to the injector chamber provides the necessary flow restriction to obtain continuous fuel flow. Disclosed are two injectors of slightly different construction eliminating the need for return springs.

Abstract: For the purpose of increasing internal combustion engine efficiency and of decreasing the polluting content of the engine exhaust, the present invention centrifuges a conventionally produced liquid fuel-air mixture to separate and maintain the liquid content thereof in contact with a heated surface to collect latent heat energy until the same is evaporated and then using the molecular spreading energy forces to attain substantially equally spaced fuel vapor molecules among all of the equally spaced air molecules as they move into the combustion chamber of the engine, to thereby assure a more complete molecular fuel-air mixture, for more complete, efficient and pollution emission free combustion.

Abstract: A fuel vaporizing device for use with internal combustion engines including a carburetor, an air filter, and a fuel tank. In the device of the present invention fuel consumed by the engine is directed to source such as a fuel tank to a conventional carburetor with the fuel aspirated and mixed with engine air and burned in a conventional manner. Fuel in the second fuel conduit is directed to a fuel vaporizer where the fuel is heated to enhance vaporization. An air pump directs air to the fuel vaporizer where the air collects vapor, and the air and vapor are directed to the carburetor upstream of the carburetor throttle valve where the air and vapor are mixed with the air passing through the carburetor.

Abstract: A fuel evaporator for an internal combustion engine is comprised of a metallic casing which is composed of a heating plate portion and a supporting portion projecting from the outer periphery of the heating plate portion downward, a heating element fixed to the heating plate portion within the casing, an insulating and adiabatic covering member which covers the supporting portion and an electrically connecting means which connects the heating element and a battery.The supporting portion of the casing is inserted in a hole formed in an intake pipe so that the heating plate portion is exposed therewithin.Since the supporting portion of the casing is covered with the insulating and adiabatic covering member, very little of the heat of the heating element is dissipated from the supporting portion into the intake pipe.By forming the supporting portion into a plurality of strip shaped legs, the heat escaping therefrom can be further reduced.

Abstract: An internal combustion engine has a carburetor, with a throttle valve and a choke valve, that delivers a fuel-air mixture to the intake manifold. An auxiliary system uses a blending chamber which feeds the manifold exclusive of the engine carburetor and through a metering valve that responds to engine vacuum level for controlling the amount of blend drawn through the blending chamber. At the inlet of the blending chamber is an atomizing throat fed with fuel and air. The drawing of the blend from the outlet of the chamber draws air through the throat and into comminglement with liquid fuel which is atomized by action of the throat. Under normal operating conditions and adjustment, the auxiliary system improves engine performance by increasing fuel economy and reducing engine exhaust pollution.

Abstract: A liquid cooled internal combustion engine including a water heated plenum associated with the intake manifold and a temperature controlled plenum valve in the water line extending to or from the plenum and operable to control the flow of water. The temperature controlled plenum valve comprises a plastic body including a base wall and a peripheral wall and a plastic cap including a base wall and a peripheral wall surrounding the peripheral wall of the plastic body. The peripheral wall of the base has a radially outwardly extending annular rib and the peripheral wall of the cap has a radially inwardly extending rib. The ribs are adapted to pass over one another to provide a snap fit during assembly. The base wall of the body has integral O-ring retainer for retaining an O-ring. A bi-metallic disc is positioned in the body within the confines of the peripheral wall of the body and normally engages said O-ring and is operable to engage the O-ring when the water temperature exceeds a predetermined amount.

Abstract: Apparatus for reduction of pollutant emissions by internal combustion engines includes a tapered, coaxial multiconical structure used as a gas separator. The gas separator is used to provide oxygen enriched air to an engine, thus providing a reduction in the amount of nitrogen provided thereto. The resulting exhaust gas includes fewer oxides of nitrogen, reduced quantities of hydrocarbons, and decreased percentages of carbon monoxide. Air is directed through the structure, entering at a wide mouth thereof. A fan may be provided for directing the air through the structure. The air exiting at the central portion of the narrow end of the structure, which has an increased ratio of oxygen to nitrogen, is directed by a conduit to the engine inlet. The structure is inexpensive, and easily mounted on existing engines, thus providing a retrofitting device for conforming older cars to current pollution standards.