Abstract: A heater for diesel fuel filter system has a thermally and electrically conductive heating plate mounted in a housing chamber so that diesel fuel flowing between the chamber inlet and outlet toward a filter normally passes over both sides of the heating plate in heat-transfer relation to the plate. Self-regulating electrical resistance heater discs of a ceramic material of positive temperature coefficient of resistivity are mounted on the plate in thermally and electrically conductive relation to the plate for heating the plate. The heater discs are arranged so that fuel passing through the chamber also flows directly over the heater discs.

Abstract: A cannister type diesel fuel heater that readily bolts on to a conventional diesel tractor comprising a closed container having two separate heat exchanger coil systems within the closed cannister. One coil is adapted to circulate diesel fuel coming from the fuel tank before combustion and the other coil is adapted to circulate excess diesel fuel returning to the fuel tank. By circulating hot crankcase oil from the diesel engine within the cannister in contact with the heat exchanger coils, the diesel fuel is heated before combustion as well as being heated upon return to the fuel tank. Such a system is particularly useful in maintaining the fuel system free of paraffinic deposits as well as improving overall efficiency and fuel mileage.

Abstract: A supplemental fuel system for a combustion engine has a primary fuel supply feeding the combustion chamber directly and a supplemental fuel supply which feeds into the combustion air intake. The supply of primary fuel is appropriately reduced or regulated by automatic control and the supply of the supplemental fuel is continuously automatically adjusted to the supply of primary fuel. Initially the supplemental fuel in vapor state is introduced into the air intake until the heat exchange vaporizer system warms up, when there is an automatic shift to the liquid state of supplemental fuel. A temperature compensator in the air intake connected to the supplemental fuel supply holds the temperature of the supplemental fuel at the same temperature as the air with which it is mixed before passing to the final metering orifice and then to the combustion chamber.

Abstract: A gasoline vaporizer associated with the carburetor of an internal combustion engine designed to improve the engine efficiency by delivering gasoline vapor directly to the carburetor.A portion of the fuel supplied by the fuel pump is diverted through a metering valve to a close chamber where it is sprayed over copper tubing through which hot water from the engine cooling system is circulated.Gasoline vapors thus produced are drawn into the venturi of the carburetor by the engine suction, or injected directly into the intake manifold.

Abstract: A diesel fuel heater is provided in the general form of a flexible elongate fluid jacket having sufficient length for wrapping around the diesel fuel filter of a diesel engine. The flexible elongate fluid jacket defines a channel having an inlet and outlet for operatively coupling into the liquid coolant circulating system of the diesel engine. The fluid jacket transfers heat from the circulating liquid coolant to diesel fuel passing through the fuel filter. Furthermore, the fluid jacket and channel are distributed and arranged to cover substantially the entire surface of the circumference of the diesel fuel filter thereby insulating the diesel fuel filter from cold air while maximizing heat transfer. In a preferred example the channel defined by the fluid jacket is in the configuration of an elongate "U" shape in which the legs of the "U" may be wrapped around the circumference of the diesel fuel filter as a single unit.

Abstract: Herein disclosed is an improved cold-start boosting device of an automotive engine, which comprises a heat pipe having a heat absorbing end exposed to the vehicle cabin and a heat emitting end exposed to the interior of a passage through which air flows before entering the engine proper, and a portable electric regenerator which is detachably connectable to the heat absorbing end of the heat pipe.

Abstract: A combination fuel heater and fuel filter for improving fuel consumption in an internal combustion engine. The heater and filter device provides heated and cleaned fuel prior to the fuel being introduced to the engine's carburator.

Abstract: The fuel flows to the usual carburetor, initially, and when the engine heats up, the fuel is directed to a vaporizer, continuing through a line in the vaporizer, and then, as vapor, to the carburetor. In the vaporizer, the exhaust gasses flow over and around the fuel line and heat the fuel and vaporizes it. A two-way valve responds to the heat of the exhaust gasses and controls the flow of the fuel to the carburetor or the vaporizer. A single carburetor is used for both the unvaporized fuel and the vaporized fuel. A surge tank is included in the vapor line between the vaporizer and the carburetor. An alternate form utilizes the coolant of the engine for vaporizing the fuel.

Abstract: An engine efficiency device is provided for use in conjunction with an internal combustion engine having an air intake means, such as a carburetor, for mixing fuel with the inducted air to form a combustible charge for the engine. The engine efficiency device comprises a source of petroleum distillates and a pump which feeds the petroleum distillates from the source and into the inducted air flow to the engine continuously during the operation of the engine. In the preferred form of the invention, the petroleum distillate is an aliphatic petroleum naptha-mineral spirit produced by the process of alkylation.

Abstract: This invention relates to an internal combustion engine cooled by water and provided with a Diesel oil heater, wherein the exchanger of the heater is fixed directly to the cylinder head of the engine, the two surfaces in contact being coupled to each other, and this cylinder head comprises, on its face on which the exchanger is applied, orifices which place it in communication with the space in the exchanger through which the water cooling the engine passes.

Abstract: An apparatus for supplying cooled fuel to the fuel injection valves of a fuel injected internal combustion engine. In the engine, there is a distribution tube having a fuel passage for fuel and a coolant passage for a cooling medium such as water or air. The fuel passage is provided in close proximity to the coolant passage, whereby the fuel in the fuel passage is cooled by the coolant in the coolant passage. Consequently, the cooled fuel is supplied to fuel injection valves.

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 modular fuel conditioner having a base and a disposable filter/water separator cartridge releasably secured to the base and defining a filter chamber in fluid communication with fuel inlet and outlet passageways in the base. A three stage filter assembly within the cartridge includes filtering and coalescing media and separates an upper portion of the chamber from a lower portion which defines a water collection sump. A heater in the base warms fuel before it enters the cartridge. Sensing devices in the base are provided for operating signals to indicate the presence of a predetermined quantity of water in the sump and the occurrence of a plugged filter condition. A priming pump on the base is manually operated to restore the fuel conditioner to operational condition after cartridge replacement.

Abstract: The operating efficiency of a Diesel engine is improved by method and means which prevaporize the injected fuel, and which establish initial combustion in a thermally-isolated, high-temperature chamber, and also which rely on various sources of heat in the operating engine to preheat the fuel to gaseous state prior to injection into the combustion chamber.

Abstract: A valve assembly for use in internal combustion engine applications, of the type designed to regulate air-fuel mixture from a carburetor or other fuel injection means entering the cylinders of either two stroke cycle or four stroke cycle spark ignition engines to improve the part-load and full-load fuel efficiency of such engines by minimizing the pumping losses. This increase in efficiency is accomplished by regulating engine power output by employing time-duration-modulation control instead of the throttled or resistive intake control which is empolyed in the engines of the prior art. A rotary valve structure employs a tubular multi-port member comprising a rotary valve, with an outlet for each cylinder, operating at 15 p.s.i. maximum differential pressure and relatively low temperatures, connected in series with presently used poppet or reed or port type intake valves. Rotary valve timing or phase control is accomplished with a multi-pulley belt drive system.

Abstract: A device for vaporizing liquid fuel for increasing burn efficiency within an internal combustion engine has been provided. Fuel is injected by means of a fuel injector (I) in timed sequence without the presence of air into a closed vacuum chamber (C) wherein the droplets of fuel are immediately changed to gaseous form. A pressurized oil lubrication system lubricates the piston walls and provides a vapor barrier within a rolling piston vacuum pump (P). Heat exchange means (H,H') are provided to maintain the temperature of the gaseous fuel substantially constant and at a lower vapor point to minimize recondensation as it is supplied to the intake manifold of the internal combustion engine. Control means (U) are provided to adjust both the frequency and duration of the injection liquid fuel droplets into the vacuum chamber (C).

Abstract: A fuel vaporization device is provided wherein atomized liquid fuel is injected in timed sequence directly into the vacuum chambers of a rolling piston vacuum pump. Optionally, minute amounts of air are bled into the vacuum chamber as the liquid fuel droplets are injected resulting in substantially complete and immediate vaporization of the fuel which is fed as gaseous fuel from the vacuum pump to the intake manifold of an internal combustion engine. A water jacket surrounds the pump for circulating heated liquid coolant from the engine in heat exchange relationship with the fuel in the vacuum pump.

Abstract: A device for aiding in the control of the fuel-air mixture in an internal combustion engine having an accelerator linked mechanically to a carburetor and a ventilation passage from the crankcase of said engine to the intake manifold, said device comprising a valve housing having a seat coupled to an air passage adapted to communicate between outside ambient air and the ventilation passage; a valve means for seating in the seat in the valve housing to prevent ambient air from flowing into the air passage, and a rotatable valve control cam means coupled to the accelerator to gradually open and close the valve as the accelerator is depressed. This device is used to increase the air in the fuel mixture so as to provide a more complete combustion.

Abstract: A cylinder head of an internal-combustion engine, operating with the four-strike Otto cycle, has a pair of diametrically opposite outlet ports and a pair of diametrically opposite inlet ports offset by 90.degree. from each other. Two coaxial annular shutters in the cylinder head, corotating with a speed ratio of 2:1, have each two mutually opposite solid quadrants and two intervening quadrants with valve apertures registering with the outlet ports and then with the inlet ports in two angular positions of the slower-rotating shutter spaced 45.degree. apart, both pairs of ports being blocked during the next quarter-turn of this shutter. A flow divider in the cylinder head directs richer components of an aspirated fuel/air mixture toward a spark plug while leaner components are diverted toward an associated piston head.

Abstract: A fuel vaporizer for an internal combusion engine comprises an elongate vaporizer chamber having one end connected to a source of air and atomized liquid fuel and the other end connected with a throttle valve for controlling flow of vaporized fuel to the cylinders of an engine. A passage extends longitudinally of the chamber for flow of hot exhaust gasses in heat exchange relationship with the air and atomized fuel mixture to vaporize the fuel to a heated, dry vaporous state. The atomized fuel and air mixture flows through a plurality of passages extending through a body of material having high thermal conductivity.