Abstract: An apparatus and method are provided for supplying an additive to enhance the performance of an internal combustion engine. The additive is introduced to the engine through the air intake system, preferably through the PCV line which normally interconnects exhaust gases accumulating from the crankcase to the air intake manifold. In a preferred embodiment, an air regulator provides a controlled flow of air through a container which houses a desired quantity of additive. A resulting air/additive mixture is produced which is introduced through the PCV line into the air intake system of the engine. The additives disclosed are paraffin and mothballs. The apparatus is mounted externally to the engine.

Abstract: The clog resistant oil pan adapter for an engine flushing system has a main body portion having an interior duct, a tubular connector hub with a primary fluid entry port at the proximal end of the main body portion for connecting with the oil pan drain port, and a distal portion with an annulus with one or more exit ports. One or more secondary fluid entry ports are also formed in the proximal end portion of the tubular connector hub connecting with the interior duct for also receiving flushing fluid from the oil pan interior chamber. The secondary side fluid entry ports can be formed in the proximal end portion of the tubular connector hub and connecting with the primary fluid entry port at the end of the tubular connector hub. Alternatively, the secondary fluid entry ports can be formed in the proximal end portion of the tubular connector hub, and spaced apart from the primary fluid entry port.

Abstract: A method of lubricating and cleaning a fuel injector of a fuel injection system of an internal combustion engine during running of the engine including delivering both a lubricant and a cleaning additive to the injector. The injector injects directly into the combustion chamber of the engine. The lubricant and cleaning additive are delivered to the fuel exit area of the injector.

Abstract: The invention relates to the measuring of the cetane number of fuels supplied to diesel engines. According to the invention, the combustion chamber of a diesel engine for measuring the cetane number of a fuel is decoked by creating, between two measurement cycles, for 80 to 160 seconds, strong turbulence in the gases inside the combustion chamber. The invention finds its application in research laboratories, test laboratories and the units which manufacture these fuels in crude oil processing plants.

Abstract: A herbal catalytic composition for controlling pollution and saving fuel energy in the automobiles, comprising of from about 50-65% by weight of Aegle marmelos and from about 45-50% by weight of Ocimum basilicum.

Abstract: In order to achieve an effective cleaning of all the cooling circuit of an automobile vehicle engine, a device is provided which consists of a tank (1) for an adequate cleaning liquid mixture which is equipped with a filling/emptying tap (2) and two in-takes (3) for insertion in said cooling circuit. In which, said tank (1) has, additionally, a pressure valve (4) and a bleeding tap (5) for reaching the preset work pressure values, preferably the operational pressure values of this cooling circuit. Additionally, and to the effects of monitoring the work pressure and the level of the cleaning liquid in tank (1), a manometer (6) and a control viewer (7) are provided. The result is an easily manageable embodiment, when, in the housing of the tank (1), fittings in the shape of a handle (8) and with rolling wheels (9), is provided.

Abstract: The present invention relates to a purifying device for cleaning the nozzle of combustion chamber of car engine and carbon accumulated in the valve, which is to use an inlet tube connecting fuel oil pump of car for feeding fuel oil into a provision oil reservoir and mixing with an additive. An oil pump of the present invention is connected with the car power supply and starting oil pump, and a solution of oil and additive extracted from the oil reservoir are fed into an oil spraying system by a filter for cleaning the nozzle and valve. The oil spraying system has an oil return tube for returning a part of the oil back into the provision oil reservoir for cycling use.

Abstract: An engine cleaner composition and method for removing carbonaceous deposits from engine fuel-system components such as mechanical and electronic fuel injectors, intake valve seats, valves, combustion cylinders, spark plugs, and oxygen sensors may be used on both gasoline and diesel engines. Preferred compositions comprise a synergistic solution of a heterocyclic ring compound in an azeotrope of acetonitrile and water, together with selected surfactants and aromatics. Preferred compositions of the invention may be placed in an aerosol pressurized unit utilizing a compressed gas, such as nitrogen or nitrous oxide, or compressed liquid gas, such as a hydrocarbon or fluorohydrocarbon. Preferred engine cleaning compositions of the invention are substantially non-ozone depleting, are low in global warming, and have a low order of human toxicity. Preferred compositions have a moderate pH and are essentially compatible with metals and elastomers conventionally used in engine fuel-system components.

Abstract: An electronically controlled carbon-cleaning apparatus for removal of carbon deposits in internal combustion engines. A microcomputer and associated electronics controls the solenoid valve and pump motor. The microcomputer performs all user interface functions. Firmware provides self test, automatic voltage verification and a variety of safety features. The apparatus includes a fill feature whereby a solution tank is filled automatically. The apparatus is designed to gradually provide power to the pump so that leaks or faulty connections can be detected before the pump reaches full pressure. The apparatus circulates a fuel-cleaner solution through the fuel injection system of the engine while it is operated, thereby saving the time and cost associated with the removal and hand cleaning of injectors. Fuel-cleaner solution level and run time are continuously monitored by the microcomputer and displayed on a LED display.

Abstract: Carbon deposits and related residue are removed from he internal surfaces of components of an internal combustion engine, particularly the fuel ports of a carbureted engine and the injection nozzles of a fuel injection engine, by circulating an engine conditioning fuel, through the engine utilizing a conditioning fuel pump, preferably driven by a fluid driven motor, for pumping conditioning fuel to the engine. The conditioning apparatus can detect leakage of the fuel pressure regulator of a fuel injected engine and can operate in both a one-line mode in which conditioning fuel flows one way from the apparatus to the engine and a two-line mode wherein the conditioning fuel is recirculated through the engine and conditioning apparatus. A preferred embodiment provides diagnostic features for checking the conditioning apparatus and certain engine components.

Abstract: This invention comprises an improved process and apparatus for flushing carbon deposits and contaminants from fuel and air intake systems of an internal combustion engine. The process includes replacing the regular fuel supply with a mixture of fuel and a cleaning agent, operating the engine at idle speed and introducing another cleaning agent through the air intake system. The first and second cleaning agents can be of the same or different composition. By simultaneously introducing cleaning agents through the fuel supply system and the air intake system, the process combines the two cleaning agents on the surface area around the intake valves, the combustion chambers and other critical areas to remove stubborn carbon deposits.

Abstract: An anti-corrosion fogging device for internal combustion engines, such as marine engines, includes a system which injects oil having anti-corrosive properties into the engine of a boat. The device may be applied to two cycle outboard motors as well as four cycle engines. The system dispenses the anti-corrosive oil by means of an aerosol spray can permanently connected to a remotely controlled solenoid valve which through a hose supplies oil to a spray nozzle permanently installed on the engine. A user can at will dispense a controllable quantity of anti-corrosive oil into an internal combustion engine at the end of an operating cycle to protect the engine against corrosion during prolonged idleness.

Abstract: An apparatus (1) is used for cleaning the fuel injection system of a motor vehicle. The apparatus (1) includes an adaptor body (3) which fits onto a container (2). The adaptor body (3) has an inlet port (6) and an outlet port (7) which connect the interior of the container (2) to the fuel system of the motor vehicle. The outlet port (7) has an extension pipe (16) which has an opening adjacent the bottom of the container (2) while the inlet port (6) opens adjacent the top of the container (2). The apparatus (1) is used to direct cleaning solvent (26) to the fuel system of the motor vehicle.

Abstract: The amount of nitrogen oxide (NOx) and hydrocarbon emissions emanating via the exhaust during operation of a gasoline engine is reduced by dispensing to a gasoline engine adjusted to operate primarily at an air-to-fuel ratio between lambda of about 0.9 to about 1.15, a gasoline that contains a minor amount of (i) a cyclopentadienyl manganese tricarbonyl compound and (ii) an alkyllead anti-knock agent. Components (i) and (ii) are proportioned such that there is dissolved in the fuel a substantially equal weight of manganese as (i) and lead as (ii), and the amount of (i) and (ii) used in the fuel is an amount that reduces the amount of NOx and hydrocarbons in the engine exhaust on combustion of the fuel with an air-to-fuel ratio between lambda of about 0.9 to about 1.15. Lambda is the actual air-to-fuel ratio divided by the stoichiometric air-to-fuel ratio. The stoichiometric air-to-fuel ratio is a lambda value of one.

Abstract: Disclosed is an apparatus for cleaning fuel injectors used for injecting fuel into an internal combustion engine. The apparatus comprises a first means for connecting a source of cleaning fluid to a first end of said apparatus, the cleaning fluid introduced to the apparatus being pressurized; a second means for connecting a second end of the apparatus to a fuel delivery line used for delivering fuel to the injectors, the second means permitting delivery of cleaning fluid into fuel in the fuel line, the first means and second means connected by a cleaning fluid delivery conduit.

Abstract: Flushing apparatus for internally cleaning internal combustion engines includes an adapter system with sets of both oil port filter port and oil drain plug port adapter sets. For a kigiven engine a selected oil filter port adapter couples the fluid conduit from the flushing apparatus to the oil filter port on the engine block with the adapter allocating the flow of fluid between the two passages in that oil filter port in a predetermined ratio, approximately a ratio of 4 to 1, irrespective of the diameter of the oil filter port passages. A universal coupling member to which the adapter attaches is formed of two parts rotatably mounted to one another and includes a rotary gland. The companion set of oil drain plug port adapters for the flushing apparatus includes a universal coupling member of like construction.

Abstract: A method and apparatus for removing internal carbon deposits and related residue and contaminants from fuel injected and carbureted internal combustion engine systems by delivering fuel to the inlet of the engine fuel pump while the engine is cranked by battery power to start the engine and then delivering an engine conditioning fuel, which is a mixture of normal engine fuel and a carbon cleaning agent, to the fuel pump inlet so that the conditioning fuel passes through and removes carbon deposits from the engine fuel injectors or carburetor, as the case may be, and is then combusted in the engine cylinders to power the engine. The effectiveness of the carbon cleaning operation is determined by monitoring the flow rate of normal engine fuel to the engine.

Abstract: A method and apparatus for flushing an automatic transmission cooling system. A sealed pressurized canister having an outlet and no inlet and a biodegradable soap solution thereinside is coupled to the cooling system, and a valve releases the soap within the canister through the cooling system. A tube within the canister extends from the canister's outlet into the soap solution, and after the soap is expelled from the canister, the canister is inverted and pressurized air from the canister purges the soap solution from the cooling system. A bag may be provided to catch the waste soap solution emerging from the cooling system.

Abstract: An electronically controlled carbon-cleaning apparatus for removal of carbon deposits in internal combustion engines. A microcomputer and associated electronics perform all control, and user interface functions. Firmware provides self test, automatic voltage adjustment to direct current systems used on internal combustion engines. The apparatus includes a fill feature whereby a solution tank is filled automatically. The apparatus circulates a fuel-cleaner solution through the fuel injection system of the engine while it is operated, thereby saving the time and cost associated with the removal and hand cleaning of injectors. Fuel-cleaner solution level and run time are continuously monitored by the microcomputer and displayed on a LCD display. Solution pressure is continuously monitored and necessary adjustments automatically made while circulating fuel-cleaner solution. An engine cut-off solenoid driver is provided to shut down the engine in the event of a empty solution tank.

Abstract: A system for enhancing the efficiency of an engine includes a container for holding an oil-based liquid. Intake tubes extend into the liquid and cause air to create turbulence in the liquid. This turbulence forms particles in the container above the level of the liquid which are carried out of the container as enriched air. The enriched air is combined with air from the crankcase prior to the PCV valve. The enriched air and the air from the crank case are then provided to the intake manifold of the engine.

Abstract: A method and an apparatus are provided for complete fluid exchange and internal system flushing of an automatic transmission system without disassembly. The apparatus is connectable to the transmission system and, in a preferred embodiment, is operable at an adjustable output fluid flow rate and pressure setting to act as an independent fluid supply and storage system for the automatic transmission system in the course of a fluid exchange and flushing operation. In addition to its application to an automatic transmission system, the apparatus of the present invention can be used to flush the fuel system of any internal combustion engine.

Abstract: A method and apparatus for removing internal carbon deposits and related residue and contaminants from fuel injected and carbureted internal combustion engine systems by delivering fuel to the inlet of the engine fuel pump while the engine is cranked by battery power to start the engine and then delivering an engine conditioning fuel, which is a mixture of normal engine fuel and a carbon cleaning agent, to the fuel pump inlet so that the conditioning fuel passes through and removes carbon deposits from the engine fuel injectors or carburetor, as the case may be, and is then combusted in the engine cylinders to power the engine. The effectiveness of the carbon cleaning operation is determined by monitoring the flow rate of normal engine fuel to the engine.

Abstract: A device for introducing a small amount of a rare earth mixture or composition in the combustion chamber of an combustion engine (1) comprises a container (4) containing a dry, air-permeable filling (5) of rare earth-containing fibers and/or powder, wherein the container (4) communicates via an opening (11) with the atmosphere and via a suction line (8) with a vacuum line (2), which is connected to the combustion chamber of the engine (1).

Abstract: Carbon deposits and related residue and contaminants are removed from the fuel ports and internal surfaces of an internal combustion engine fuel system, particularly fuel injectors, carburetors, fuel pumps, fuel passages, and the like, by initially utilizing a priming pump to pump priming fuel to the engine from an external fuel source while the engine is being cranked to start the engine and then utilizing the engine fuel pump to pump a combustible, carbon removing conditioning fuel from the fuel source through the engine fuel system along a flow path which by-passes the priming pump so as to avoid restriction of the conditioning fuel flow by the priming pump and thereby increase the conditioning fuel flow rate sufficiently to permit simultaneous servicing of several engines.

Abstract: The method of cleaning internal combustion engine fuel injector structure, valves and combustion chambers, and employing a canister containing a liquid mixture that includes engine fuel and injector cleaning solvent, the steps that include charging pressurized gas into the canister to a selected high-pressure level; communicating the interior of the canister with a passage extending to the injector structure and operating the engine, including a fuel pump to provide pressurized fuel discharge which is delivered to the passage; terminating operation of the fuel pump; continuing operation of the engine by allowing substantially continuous pressurized flow of the mixture in the canister to the injector structure, via the passage, and until the mixture in the canister depletes; and after pressure drops to a selected lower level, re-charging pressurized gas into the canister to a selected high-pressure level, and continuing the communication of the canister interior with the passage to flow more of the mixture to

Abstract: A method for the controlled addition of an additive to the fuel supply of a vehicle internal combustion engine, in particular a diesel engine with an exhaust particulate filter, in which the addition is performed as a function of an increase in the fuel supply. While the vehicle is in motion with the engine running, the fuel level is measured at predetermined short time intervals and, having been averaged over a predetermined number of these time intervals, is fed to a measured-value storage device in which the previous average value is compared with the new average value. When a differential value is detected in the average value comparison which exceeds a predetermined tolerance level, an addition of additive proportional to the increase in the level is triggered. After each comparison, the previous average value is erased and replaced by the new average value.

Abstract: A method and apparatus for operating an internal combustion engine fuel injection system wherein fuel is cyclically injected directly into an engine combustion chamber though a selectively openable nozzle, whereby the nozzle is periodically maintained open while no fuel is being delivered through the nozzle and while the gas in the combustion chamber is at a temperature and pressure so that gas from the combustion chamber will pass into the open nozzle means to raise the temperature thereof sufficient to combust contaminate deposits thereon.

Abstract: Disclosed herein is an emission control system including an air pretreatment system for enhancing the ability of air passing therethrough to absorb moisture, a humidification chamber having an inlet and an outlet, the inlet being attached to the air pretreatment system, the pretreated air passing from the air pretreatment system into the inlet and through the humidification chamber so that it is humidified at a consistently controllable rate in its passage through the humidification chamber to and out of the outlet.

Abstract: An internal combustion engine having pistons, cylinders, an air cooler, an air manifold and a turbocharger with a compressor. There is a tank to contain hot water under pressure. The pressure in the tank and the water temperature can be controlled. At least one injector allows heated water to be injected into the turbocharger compressor. A further injector allows water to be injected into the air cooler and a plurality of yet further injectors allow water to be injected into the air manifold. Conduits supply water from the tank to the injectors. Control of flow in the conduits is by valves. The invention permits the cleaning of an internal combustion engine without dismantling the engine or the turbocharger.

Abstract: The method of cleaning internal combustion engine fuel injector structure, valves and combustion chambers, and employing a canister containing a liquid mixture that includes engine fuel and injector cleaning solvent, the steps that include charging pressurized gas into the canister to a selected high-pressure level; communicating the interior of the canister with a passage extending to the injector structure and operating the engine to provide pressurized fuel discharge delivered to the passage; terminating operation of an engine fuel pump; continuing operation of the engine and flow of the mixture in the canister to the injector structure until the mixture in the canister depletes; and re-charging pressurized gas into the canister to a selected high-pressure level, and continuing flow of the mixture to the injector structure while the engine is running.

Abstract: A fuel injection system cleaning kit includes a pressurizable container of cleaning fluid, and a regulator to control the discharge pressure of the cleaning fluid. An isolating valve is located in the conduit between the regulator and container and a charging valve is placed between the container and isolating valve. With the isolating valve closed, a pressurized gas such as air, can charge the container through the charge valve.

Abstract: The invention comprises an apparatus for cleaning chambers such as those of engines and transmissions, including a reservoir, a quantity of synthetic cleaning fluid disposed in the reservoir, a first channel for fluidly connecting the reservoir with a first oil passageway opening in an internal combustion engine, a second channel for fluidly connecting the reservoir to a second oil passageway opening in the internal combustion engine, and a pump for pumping the synthetic cleaning fluid from the reservoir through the first channel and into the engine and then back to the reservoir through the second channel.

Abstract: Method and apparatus for cleaning fuel injector systems of internal combustion engines which comprises avoidance of burns and possible injuries in setting up the conventional system apparatus in the engine compartment. The present method is characterized by setting up the required connections and apparatus at the rear of the vehicle in an area isolated from the region under the vehicle hood. The invention has other advantages. In particular, filter replacement in the isolated area subsequent to completion of the cleaning process is effected by a novel aspect of the method which involves filter removal as a step in the method. In a conventional method the filter is left in place but ultimately replaced, for comprehensive maintenance of the fuel system, as an additional step. Another advantage of the invention is the method of detecting leakage in injector and fuel flow systems and to detect the extent of clogging of individual injectors to determine the need for replacement.

Abstract: Disclosed herein is an internal combustion engine comprising a cylinder defining a combustion chamber, a primer fuel conduit communicating with the combustion chamber for supplying a primer fuel to the combustion chamber, and a valved supply conduit for introducing an engine maintenance fluid into the primer fuel conduit.

Abstract: The present invention is a method and apparatus to clean the intake system of an internal combustion engine including the intake valves. An air metering block is connected to the intake manifold of the engine by means of an adaptor tube. The only air that can get into the intake manifold of the engine is through inlet ports in the air metering block. An air adjusting screw selectively uncovers the inlet ports to vary the amount of air which can be introduced into the intake manifold. An electrically operated injector is fitted in the air metering block to inject solvent directly into the intake manifold. An adjustable injector driver varies the duty cycle or the on time of the injector to control the amount of flow of solvent into the intake manifold. A pumping unit is provided to pump solvent from a holding tank, through the injector, into the intake manifold.

Abstract: Injector cleaning/testing apparatus is arranged to enable electrically actuated injectors to be cleaned and tested while in situ on an engine. The apparatus is connected to the fuel supply system of the engine which feeds fuel and/or cleaning fluid to the engine injectors. Measuring means is also provided for measuring the rate of flow of fuel through the injectors. Fuel is pumped to pressurize the supply of fuel to the injectors; the pressure is measured and the rate of change of the pressure is determined as an injector is opened thereby determining the rate of flow through the injector. The apparatus also includes an arrangement whereby the engine fuel supply pump is used during cleaning and an arrangement by which the injectors may be actuated in different modes without disconnection.

Abstract: The invention relates to a method and arrangement for cleaning the spark plugs of an internal combustion engine automatically subsequent to the engine stopping and then, preferably, after an unsuccessful attempt to start the engine. Consequently, conditions for a successful starting attempt are made more favorable. Conditions preventing the start of an engine are often due to the presence of deposits on one of the spark plugs, these deposits preventing an ignition spark from being produced in the cylinder. The inventive method and arrangement solve this problem by burning clean the spark plugs immediately after the engine has stopped, and then preferably after the engine has failed to start. A detection means establishes whether or not the engine has started by sensing a suitable engine parameter, preferably engine speed, through a speed indicator.

Abstract: An apparatus for introducing a fuel additive into the fuel tank of an automotive vehicle comprising a pumping device including a pneumatically actuated displacement pump the pumping element of which is displaceable by pressure against the force of a pretensioned spring by means of a control valve and the control valve is preferably directly actuable by the lid of the fuel tank.

Abstract: Cleaning of gums, sludge and other adhering on a fuel injection valve in a fuel injection internal combustion engine can be done by driving of engine with a cleaning agent as a mixture of gasoline and an aromatic solvent. The mixture is adjusted the mixture rate thereof to satisfactorily combustion in an engine cylinder and dissolve gums, sludge and other adherings on the fuel injection valve. The cleaning agent is supplied to the engine cylinder through the fuel injection valve and during passing through the fuel injection valve it dissolves the adherings.

Abstract: An improved apparatus for cleaning internal combustion engines by providing a cart with wheels to transport the apparatus to the engine to the serviced. The apparatus can contain a battery or be connected to the power supply of the engine. A cleaning solution is poured into the reservoir of the apparatus. A pump delivers the cleaning solution to the input junction of the fuel supply line of the engine. Control switches insure the apparatus is started and brought up to operating pressure. If internal pressure is not achieved or if pressure is lost during operating, the power to the pump is interrupted. A return line is provided to establish a pathway for excess cleaning solution to be returned to the reservoir of the apparatus. The return line incorporates an adjustable pressure regulator to compensate for an inadequate or manufactioning engine fuel pressure regulator.

Abstract: A mixture control device is disclosed that is used to test internal combustion engines. The device is usually temporarily installed on an engine to test catalytic converters, to clean internal engine parts, or to determine specific operating problems with an engine. The device can also be used as a teaching aid to show different operating conditions without making permanent or difficult adjustments. The device can also be used in racing applications to allow a driver to adjust the mixture of an engine, while on the course, to ensure peak efficiency under varying race conditions. The device consists of a housing that has a plenum formed within its center. The plenum runs the entire length of the housing. A venturi port is also formed on the housing and it feeds fuel and air into the plenum for injection into an engine. Fuel is supplied through an internal tank and is supplied to the venturi port through a small hose and a needle valve assembly.

Abstract: An apparatus for cleaning the fuel injectors and combustion chambers of an internal combustion engine. The apparatus can safely be used "under the hood" of the engine and features a safety fitting which is designed to mate only with a compatible container of cleaning mixture.

Abstract: A cleaning system is provided for cleaning fuel injectors of deposits inhibiting their efficient operation. The system provides a circuit for cleaning fluid to be passed through the injector and includes a pump for fluid and controls whereby the fluid is passed through the injector with periodic reversals of flow. A flowmeter is provided to check the cleaning action and an electrical supply to the injector ensures it is in an open condition during cleaning. The injector is releasably located in fluid communication with the fluid.

Abstract: Engine exhaust gas containing soot is bubbled through a magnesium-water mixture and the resulting mixture is fed to the intake of the engine.

Abstract: A fluid injection system for injecting atomized fluids into the intake manifold of an internal combustion engine comprising: a fluid reservoir to hold a supply of fluid, means to transport the fluid to a mixer having (i) a mixing junction, (ii) a flow adjustable fluid intake port to receive the fluid and deliver it to the mixing junction, and (iii) a restricted fixed air flow intake port to deliver a predetermined approximately constant air flow into the mixing junction for atomization of the fluids, and collector means and transport the atomized fluid mixture into the intake manifold.

Abstract: A fuel injector cleaning kit includes a pressurized container containing a pressurized mixture of a fuel injector cleaning fluid and a motor vehicle fuel. The kit includes instructions, hoses and adapters for connection to a plurality of different motor vehicles. An adjustable pressure regulator, included as part of the kit, controls the pressure of the mixture delivered to the vehicle to a value specific to the particular vehicle.

Abstract: In a diesel engine fuel injection system, a fuel injection pump draws fuel from a reservoir, delivers a portion of the fuel to the engine, and directs excess fuel through a return line back to the reservoir. A supply pump delivers fuel from a tank to the reservoir to maintain a constant volume of fuel in the reservoir. A fuel metering unit measures the rate of fuel delivery by the supply pump. An additive pump feeds an additive through the return line to the reservoir where the additive mixes with the fuel. The fuel metering unit controls the additive pump to proportion the rate at which additive is fed to the reservoir to the rate at which fuel is delivered by the supply pump, and the amount of additive delivered to the engine is thereby proportioned to the amount of fuel consumed by the engine.

Abstract: A method of delivering fuel to an internal combustion engine comprising delivering individual metered quantities of fuel into a conduit, and propelling each individual metered quantity of fuel along the conduit by an individual gas pulse. During the time interval between the respective gas pulses that deliver the metered quantities of fuel there is established a secondary gas flow in the conduit so as to limit variations in the quantity of fuel retained in the conduit as the metered quantity of fuel varies with engine fuel demand.

Abstract: A liquid dispensing device particularly suitable for automatically dispensing a lubricant to the combustion zones of an internal combustion engine. A sealed lubricant reservoir conjoins with an air and liquid blending chamber formed by a housing. The housing is sealed save for a minute air bleed aperture. An inlet to the chamber for the liquid is provided in an upper part of the housing and an outlet from the chamber provided in a lower part of the housing. The outlet is set up higher than a lower extremity of the chamber such that the outlet operates as a weir. The outlet conjoins with a turbulating device comprised of an axially adjustable pin having an external helical groove. The pin is mounted in a bore conjoining with a conduit to a required dispensing port, for example, in an inlet manifold of an engine. Inlet manifold vacuum draws lubricant from the reservoir via the air with lubricant blending chamber and the turbulating device.

Abstract: A mixture control device is disclosed that is used to test internal combustion engines. The device is usually temporarily installed on an engine to test catalytic converters, to clean internal engine parts, or to determine specific operating problems with an engine. The device can also be used as a teaching aid to show different operating conditions without making permanent or difficult adjustments. The device can also be used in racing applications to allow a driver to adjust the mixture of an engine, while on the course, to ensure peak efficiency under varying race conditions. The device consists of a housing that has a plenum formed within its center. The plenum runs the entire length of the housing. A venturi port is also formed on the housing and it feeds fuel and air into the plenum for injection into an engine. Fuel is supplied through an internal tank and is supplied to the venturi port through a small hose and a needle valve assembly.