Abstract: A fuel delivery system for automobile engine and like applications in which a canister is positioned within a fuel tank and has an open lower end and an internal wall spaced from the lower canister end for dividing the canister into upper and lower chambers. An electric fuel pump is carried by the canister wall within the upper chamber and has an inlet coupled through the wall to the lower chamber. The pump outlet feeds fuel under pressure to an engine, and excess fuel is returned to the upper chamber which thus forms a fuel reservoir. A valve is responsive to fuel level in the upper chamber for selectively feeding fuel from the upper reservoir chamber to the lower chamber, and thence to the pump inlet, when fuel level in the upper chamber approaches maximum reservoir capacity.

Abstract: A fuel delivery system (10) includes a fuel tank (12) for storing a supply of fuel (16) and conduits (18) for conducting the fuel (16) from the fuel tank (12) to an engine (20). A separator module (22) in fluid communication with the conduits (18) separates by cross-flow separation a substantially water and particle free fuel permeate flow from a fuel retentate flow. The conduit (18) includes a first passageway (24) conducting the fuel permeate flow to the engine (20) and a second passageway (30) conducting the fuel retentate flow back to the fuel tank (12).

Abstract: A fuel feed system for supplying fuel to a combustion chamber of a first internal combustion engine and to a combustion chamber of a second internal combustion engine. The fuel feed system includes a fuel tank, and a first fuel pump including an outlet, and an inlet communicating with the fuel tank. The system also includes a fuel vapor separator including a first outlet, a second outlet, and an inlet communicating with the first fuel pump outlet, a second fuel pump communicating with the fuel vapor separator first outlet and communicating with the first engine combustion chamber, and a third fuel pump communicating with the fuel vapor separator second outlet and communicating with the second engine combustion chamber.

Abstract: A fuel pumping apparatus for supplying fuel to a compression ignition engine includes a high pressure pump to which fuel is supplied by a low pressure pump by way of a throttle which is responsive to the output pressure of the low pressure pump for the purpose of providing a governing action. A valve is connected in series with the pumps and is energized to the open position through a pressure responsive switch which closes when the output pressure of the low pressure pump is above a predetermined value. Means is provided to energize the valve for the purpose of starting the associated engine.

Abstract: A water removal device for placement in the fuel line of an hydrocarbon fueled engine between the fuel tank and the engine. The device includes a hermetically sealed housing which has an inlet end and an outlet end, respectively, for receiving and discharging flowing fuel. Within the interior of the housing a quantity of hygroscopic material is tightly packed. The grain size and shape of the grains of the material is selected so that substantially no particulate matter will enter the fuel stream. In a preferred embodiment conventional filters are utilized downstream of the device. A screen filter or filter made from a fibrous material may be used upstream of the device. Also, a screen may be attached within the housing adjacent the inlet and outlet ends to prevent granules of the hygroscopic material from passing out of the device and into the fuel stream. A viewing port may be incorporated in the housing to allow the operator of the vehicle to visually determine whether the chemical needs replacement.

Abstract: An arrangement for supplying fuel from a supply tank to an internal combustion engine, particularly in a power vehicle, comprises a container, a feeding aggregate arranged in the container, two pump stages arranged in series in a flow direction of a fuel and sealed from one another, the pump stages including a pre-stage and an end stage and each having a suction opening and a pressure opening, and unit for warning about the dry running of the pre-stage and including a sensor which is arranged between the suction opening and the pressure opening of the pre-stage in a region of the feeding aggregate through which fuel flows, and a warning device operatively connected with the sensor and activated in response to dry running of the pre-stage.

Abstract: A low pressure fuel circulation with fuel preheating for an air-compressing injection-type internal combustion engine, preferably for commercial vehicles, in which a heat-exchanger and a by-pass by-passing the fine filter and having an excess pressure valve opening in dependence on a predetermined maximum pressure acting on the fine filter as a result of paraffin formation is arranged in an inlet line leading to a high pressure injection pump.

Abstract: The present invention relates to a filtering fuel collector arranged inside a fuel tank to provide a running reserve fuel supply for a combustion engine when subjected to considerable g forces or while inclined. A running fuel reserve is obtained by making the fuel collector out of a porous, dimensionally stable material capable of supplying the collector with fuel when the engine is running.

Abstract: A method for feeding fuel in a fuel system is disclosed in its most preferred form utilizing a device including a valve stem which is reciprocally received through a bore in a foam rubber ball. The valve stem includes a plate which may be pulled against the ball to seal the valve stem in the bore. The ball is of solid cross section and has a size for overfitting and abutting with the fill opening of a fuel tank. The ball is deformable to conform to the perimeter of the fill opening for sealingly engaging the perimeter of the fill opening and has a firmness for transmitting a force applied to the ball in the direction of the fill opening into a sealing force applied by the ball to the fill opening to balance opposing forces created by the introduction of air pressure into the fuel tank through the valve stem and for allowing an excessive air pressure to escape from the fill opening around the ball.

Abstract: A fuel system for automotive vehicles including a main liquid fuel tank which has a vertical fuel canister within the tank containing an electrically powered fuel pump. The canister has an open bottom positioned at the bottom of the fuel tank. The pump delivers liquid fuel from an inlet at the bottom of the canister to the engine and a pressure regulator in the line diverts fuel above the required volume back to the top of the canister which has an overflow to the main tank. The canister, which serves as a fuel reservoir, has a bottom septum closed by a movable valve. A filter material extends over the bottom of the canister to filter fuel entering the pump inlet. The filter is mechanically associated centrally with a spring biased lever connected to the movable valve. Under conditions where the bottom of the canister is starved of liquid fuel, the filter acts as a diaphragm to shift the lever against the resilient bias and open the valve to admit reservoir fuel from the canister to the pump inlet.

Abstract: Several embodiments of outboard motor fuel feed systems wherein a position responsive valve is interposed between a remotely positioned fuel tank and the engine charge former for precluding the inadvertant flow of fuel to the charge former when the outboard motor is tilted up. In each embodiment, the valve is a gravity responsive valve and in another embodiment a pressure responsive valve member is provided for ensuring fuel flow when the outboard motor is again tilted down to its normal running position.

Abstract: A valve body has a bore with a tapered bore portion fuel inlet and outlet ports and air inlet and outlet ports which are communicated with the bore. The fuel cock is provided with a fuel plug having a piston end and is rotatably engaged in the tapered bore of the valve body so as to close and open a fuel passage between the fuel inlet and outlet ports, and an air plug rotatably engaged in the bore so as to close and open an air passage between the air inlet and outlet ports. A chamber is formed between the piston end of the fuel plug and the air plug, and the pressure of the air at the air inlet port is applied to the chamber and to the piston end to urge the fuel plug towards a small diameter end so as to insure sealing effect. The fuel plug and air plug are so arranged as to close and open both the fuel passage and air passage at the same time.

Abstract: Liquid fuel from a controlled supply is delivered to a delivery tube under a pressure which is too low to deliver a charge of fuel under static conditions. During an induction stroke however, air entering a cylinder of an engine is drawn through a venturi-type constriction and thereby draws air from a duct by-passing the engine throttle. This air is drawn through a convergent passage to pass the delivery end of the tube at supersonic velocity to draw therefrom a charge of fuel. The tubes for each inlet passage are in permanent communication with the same metered supply so each cylinder draws its appropriate charge in turn.

Abstract: A pressure regulating device is proposed, which serves to regulate the fuel pressure in a fuel injection system for internal combustion engines. The pressure regulating device includes a pressure regulating valve which has a valve diaphragm fastened in a valve housing and defining a fuel chamber which communicates via an inflow opening with a fuel distributor line. Protruding into the fuel chamber is a valve seat body joined to the valve housing, on one end of which body a valve seat is formed and the other end of which is embodied as an outlet pipe that passes through the wall of the fuel distributor line. The fuel distributor line is formed of two shell halves inserted one inside the other, of which the first shell half has a tub-shaped end into which the pressure regulating valve is inserted and with which it is securely fastened.

Abstract: A fuel rail for internal combustion engines utilizing fuel injectors which includes an elongate housing having an internal chamber with a fuel inlet near one end and a fuel outlet leading to a pressure regulator valve. The chamber is divided longitudinally by a flexible metal membrane which absorbs pulsations created by the injectors and stabilizes the fuel supply to the fuel injectors.

Abstract: A pressure regulator valve for use in fuel systems for internal combustion engines which includes a two-part housing lamination with a diaphragm between the bottom and top housings and a centering valve guide disc above the diaphragm. The diaphragm is responsive to fuel pressure and will open a valve to by-pass fuel to a fuel tank. The centering valve guide disc functions to locate a diaphragm backing disc above the valve seat. A preferred diaphragm is formed of thin metal such as stainless steel which is confined at its periphery by housing elements to avoid destructive deformation in maximum pressure testing. In another embodiment, the metal operating diaphragm is secured at its periphery and formed in a manner to react in response to pressure to counteract increased spring force of a diaphragm backing spring. A press-in spring cap or cup allows calibration of the unit during assembly with a strike-in to fix the calibration in a tamperproof structure.

Abstract: A pressure regulator having a housing with a chamber disposed therein. A diaphragm is sealingly connected around the inner periphery of the housing for dividing the chamber into two parts. A first port is fluidly connected to a first part of the chamber and is adapted to be attached to a fuel return line. A second port is fluidly connected to the first part of the chamber and is adapted to be fluidly attached to a fuel rail having fuel injectors attached thereto. A third port is fluidly connected to the second part of the chamber and is adapted to be fluidly connected to an intake manifold of an internal combustion engine. A resilient flat washer is attached around the outer periphery thereof to the housing, adjacent to the first part. An elongated valve member is disposed in the first part of the chamber and has one end thereof adapted to be selectively and sealingly received within the opening in the washer.

Abstract: A fuel system for a compression ignition engine includes a high pressure pump to which fuel is supplied through a filter by a low pressure pump. A fuel heater is provided to supply heat to the fuel. Fuel is returned from the housing of the high pressure pump through a conduit which includes in a valve housing a restricted orifice. The valve housing also includes temperature responsive means which when the fuel temperature is low reduces the size of the orifice.

Abstract: Fuel for a working cylinder chamber (8) of an internal combustion engine is drawn through an atomizing nozzle (39) from an accumulator (30). Fuel is supplied by a low pressure source (12) through a variable constriction (16) linked to the throttle (4) and through a solenoid valve which is pulsed at a frequency proportional to engine speed.

Abstract: This disclosure relates to a fuel supply system for an internal combustion engine, wherein a suction type fuel supply system supplies fuel through a fuel pump to a carburetor which is located at a level higher than the fuel level of the main fuel tank. In one disclosed embodiment, a reserve fuel tank is provided on the line connecting the main fuel tank with the fuel pump, and the reserve tank is at a level higher than the carburetor and the fuel pump, the fuel outlet of the reserve tank is located at a level lower than the fuel inlet. According to an alternative embodiment, a fuel supply system is provided wherein a suction type fuel supply system supplies fuel through a fuel pump to a carburetor which is located at a level higher than the fuel level of the main fuel tank.

Abstract: In a device for temperature responsive switching of overflow fuel quantities from a diesel fuel injection pump to a fuel supply tank or a filter of a fuel supply system a switching valve, arranged between the fuel injection pump and the tank, is actuated by a bimetallic element. Parallel to the switching valve is provided a throttle for continuous air venting. A pressure control valve with a low opening pressure is installed in the connection between the switching valve and the filter. The heated overflow fuel quantities are mixed with cool fuel from the tank and therefore the danger of clogging of the filter, which could be caused by paraffin separation, is substantially reduced.

Abstract: An apparatus used in combination with a gasoline powered internal combustion engine. The apparatus allows a fuel-air inlet charge to be applied into the engine combustion chamber that is comprised of an optimized mixture of gasoline, air and unburned hydrocarbon exhaust gases. The apparatus is comprised of four elements that are synergistically combined with existing engine and engine-related components. The four elements include a thermic reactor, a catalytic gas injector, a thermic reactor exhaust filter, and a fuel regulator/restrictor. The thermic reactor supplies heated clean air and exhaust gases to the catalytic gas injector where the clean air and exhaust gases are mixed. The mixed gas together with a regulated quantity of gasoline supplied from the fuel regulator/restrictor are applied to the carburetor or fuel injection system. The fuel-air mixture improves the thermal efficiency of the engine, thereby reducing fuel consumption, and reducing air-contaminating exhaust emissions.

Abstract: A fuel injection unit includes a body housing a high pressure fuel pump, the body having a stepped cylindrical portion 11 to which a nozzle head is attached by a cap nut having a skirt portion. A fuel supply port opens onto a step and located against the step is a ring member the surface of which presented to the step defines an annular recess. Inner and outer annular legs are defined by the recess and the inner leg engages the step and the outer leg has a clearance with the step, the clearance forming a filtration gap for fuel flowing to the supply port.

Abstract: In combination with a vehicle powered by an internal combustion engine mounted within a relatively enclosed engine compartment, an engine fuel conditioning apparatus for heat conditioning fuel prior to flow into the carburetor, the fuel conditioner being located at the uppermost portion of the engine compartment and adjacent the carburetor so that the fuel therein is exposed to the maximum temperature conditions in the engine compartment to pre-heat fuel prior to flowing into a heated carburetor thereby preventing fuel foaming which adversely richens the fuel-air ratio to the engine.

Abstract: Apparatus for ejecting water from a fuel system having a fuel reservoir with a water trap which is open to a pump in the presence of water and closed in the absence of water. The pump operates each time the engine is started to receive a charge of water and each time the engine is stopped to discharge the charge of water to the exterior of the reservoir.

Abstract: A fuel supply apparatus for a diesel engine includes a fuel tank and a fuel injection pump. The fuel injection pump has an inlet and an overflow outlet. A fuel feed line connects the fuel tank to the inlet of the fuel injection pump. A fuel feed pump is disposed in the fuel feed line to supply fuel from the fuel tank to the fuel injection pump. A fuel filter is disposed along the fuel feed line. A main fuel return line connects the overflow outlet of the fuel injection pump to the fuel tank. An auxiliary fuel return line connects the overflow outlet of the fuel injection pump to the fuel feed line at a position upstream of the fuel filter. A control valve is disposed in the auxiliary fuel return line to selectively block the latter. A device drives the control valve in response to the temperature of fuel in the fuel filter so that the control valve will block the auxiliary fuel return line only when the temperature of fuel in the fuel filter is higher than a preset value.

Abstract: A method and apparatus for automatically changing and disposing of used engine oil for a diesel engine. An oil conduct means is provided which conducts a portion of the engine oil circulating through the lubrication system of a diesel engine to the fuel system to be mixed with the fuel. The oil/fuel mixture is burned in the combustion chamber. An oil tank is provided outside of the lubricant system. An oil supply means is provided which automatically supplies oil from the oil tank to the lubricant system when the amount of oil within the lubricant system decreases.

Abstract: A combustion engine is shown with a fuel metering device having a fuel reservoir or fuel bowl with such, in turn, having a float-controlled fuel inlet valve; a fuel supply conduit leading from a vehicular fuel tank to the inlet of the fuel bowl has a normally open solenoid valve and a flow meter situated in series therewith; a control device receiving signals indicative of engine speed and rate of fuel flow to the fuel bowl is effective to cause the solenoid valve to close and terminate further fuel flow whenever the numerical ratio of the rate of fuel flow divided by the engine speed exceeds a preselected magnitude of such a ratio or index.

Abstract: A diesel engine may have an electrically-actuated cold starting device in its inlet manifold, gravity fed with fuel from a reservoir interposed in a pipe for returning excess fuel from the injectors and injection pump to the vented fuel tank. If the pipe opens below the fuel level in the tank because the latter is full, or if oil is retained in the pipe by capillary action when the tank is not full, air cannot reach the reservoir to permit fuel flow to the device when required. The reservoir outlet to the tank therefore includes a restriction from which fuel emerges as a jet while the engine is running, and a vent hole within the zone containing the jet. The velocity of the jet carries fuel past the vent hole without any loss of fuel through the latter. When the engine is not running, the vent hole connects the reservoir to atmosphere.

Abstract: A fuel injection system for an internal combustion engine, comprising cylinder which has a delivery plunger slidable therein, an injection plunger which is hydraulically actuated by the delivery plunger and which defines an injection pump chamber, a timing plunger which defines a timing pump chamber selectively connected to a drain and which is hydraulically actuated by the delivery plunger to control the connection of the timing pump chamber to the drain, a controllable electromagnetic control valve, balance timing orifice, non-return valve, fuel passage and metering groove feeding the fuel into the injection and timing pump chambers, and nozzle for injecting the fuel delivered by the injection pump chamber, the injection plunger and timing plunger being axially displaced by the fuel fed into the respective pump chambers, in directions opposite to the directions of the movement of the two plungers caused by the delivery plunger, through a stroke in proportion to the amount of the fed fuel.

Abstract: An improved fuel temperature control system is disclosed for attachment to a diesel engine. The control system comprises a fuel tank, an injection pump and a transfer pump along with associated fuel lines. The transfer pump is designed to draw fuel out of the fuel tank and route it to the injection pump. In the injection pump, a portion of the fuel is directed to the cylinders of the engine while the unused portion is returned via a return line to the fuel tank. In addition to the above, a temperature control means is positioned across the fuel supply line between the transfer pump and the injection pump. This temperature control means contains a temperature sensor interconnected to a temperature compensator valve. The temperature sensor is capable of sensing the temperature of the fuel as it flows through the fuel supply line while the temperature compensator alters the direction of flow of the fuel in response to commands from the temperature sensor.

Abstract: A fuel filter assembly and cartridge for filtering, coalescing and separating solids, liquids, and gases from a fluid flow including a housing adapted to a removable cartridge. The cartridge is in the form of an annular member having an outer annular filtering section to remove solids an an inner annular coalescing section to cause emulsified liquids to form readily removable droplets in the flow. A separator is situated within the inner periphery of the coalescing section to deflect coalesced liquid for separation while permitting passage of the purified fluid.

Abstract: A device for the magnetic treatment of fluids including water, and liquid and gaseous fuels such as gasoline, diesel, gasahol, fuel, propane, natural gas, oil and the like. The device comprises an elongated, tubular, intermediate casing of a magnetic material, such as a ferromagnetic material, having an elongated magnet received therein. An inner casing of non-magnetic material, such as copper, encases the magnet and includes open tubular end portions extending beyond opposite ends of the magnet and having inner and outer surfaces extending longitudinally with respect thereto. A pair of non-magnetic end fittings are connected to opposite ends of the intermediate casing and include recesses in which are received the respective opposite tubular end portions of the inner casing so as to space the inner casing from the intermediate casing thereby forming an annular treatment chamber therebetween.

Abstract: A fuel system for a diesel engine includes a low pressure pump for supplying fuel to a high pressure pump, the low pressure pump drawing fuel from the outlet of a filter unit having an inlet connected in use to a fuel tank. A reservoir is provided having an outlet connected by restricted passage means to the outlet of the filter unit and an inlet through which fuel can flow to the reservoir and a further outlet through which surplus fuel can flow from the reservoir. Fuel being drawn from the reservoir in the event that the fuel tank is emptied to allow a restricted flow of fuel to the engine, the fuel in the reservoir allowing the engine to be operated at low speed to assist fuel flow from the tank when the latter is re-filled.

Abstract: A fuel system particularly useful with diesel fuel. The fuel is picked up through a fuel strainer system and pumped through a supply line to the engine. Excess fuel is returned to the fuel tank through a fuel return line. Since any water in the fuel separates from diesel fuel and settles in the bottom of the tank, the water must at times be removed. By extending the fuel return tube to the bottom of the tank a syphon tube is provided which can be connected to a pump to pump out the water. If the water in the bottom of the tank freezes, a bypass valve in the upper portion of the fuel return line, but within the tank, operates so that returned fuel may still be discharged in the tank. Two flexible bypass valve arrangements are shown, both using variations of a duckbill valve to provide a closed valve when syphoning or pumping of the water takes place.

Abstract: A fuel supply system for a diesel engine includes a fuel pump drawing fuel through a filter unit. The pump has an outlet for surplus fuel and also leakage fuel and this fuel is heated during operation of the pump. Most of this fuel is passed along a passage in a through bolt which holds the filter unit in assembly. Heat exchange occurs with the fuel entering the filter unit and this minimizes the risk of freezing of fractions of the fuel.

Abstract: The system includes a fuel storage tank connected to a vacuum pump by a supply line, a fuel/water separator, a fuel lift pump, a fuel/water return line and a fuel injector pump or carburetor. The fuel/water separator includes a coalescer interposed between the fuel lift pump and the injector pump or carburetor to separate the water from the fuel. Water collects in the lowest portion of the separator housing, is removed through an orifice in the fuel/water return line, and is routed back to the fuel tank. With moderate levels of water contamination in the fuel tank the system prevents water from reaching the fuel injector pump or carburetor for an indefinite period of time. The separator housing is constantly drained since the separator is under pressure. The system has a suitable detector to detect the water level in the fuel storage tank. Water may be removed from the fuel storage tank by temporarily converting a part of the water/fuel return line to a water outlet pumping line through a three-way valve.

Abstract: A fuel system for a motor vehicle with a passenger space and driven by an internal combustion engine that includes a fuel tank, a fuel feed pump, a mixture-producing device, a fuel inlet line leading from the fuel tank to the fuel feed pump and a fuel return line leading back to the fuel tank, and a liquid/air heat-exchanger arranged in the fuel system which is traversed on the liquid side by the fuel and on the air side by the ventilating discharge air out of the passenger space.

Abstract: This invention relates to an apparatus for controlling at least one electrical switching element in internal combustion engines, particularly the main relay of the voltage supply, in accordance with one operating characteristic and with a switch position which indicates an operating condition, in which the signal corresponding to the operating characteristic can be fed to a storage device whose charging and/or discharging process can be influenced by the switch relative to the ignition with the value of the storage signal serving to control the electrical switching element. Furthermore, the signal in accordance with the operating condition and, indirectly or directly, corresponding to the operating characteristic can be fed to a connection point whose output signal can be switched to a switching device for heating the heating wire in an air flow rate meter to a red-hot condition.

Abstract: The invention relates to an injection internal combustion engine.The engine has a device for injecting fuel, preferably at high pressure, into the cylinder of cylinders, a device adjusting the injection advance in dependence on the load, and a controlled ignition device, the said engine being arranged to use a fuel other than a petroleum product, preferably an alcohol based product, and being characterized in that its dimensional characteristics are determined to supply a volumetric compression ratio between 12 and 20, preferably between 15 and 18 and in particular close to 16, and in that the device adjusting the injection advance is such that it supplies, at least for starting, a high value of advance, particularly of the order of 180.degree..

Abstract: A air/fuel ratio regulator for control of the movement of a fuel flow control lever on a fuel injection pump. A lever is connected to the pump lever and moved by an aneroid to change the pump fuel flow as a function of engine manifold vacuum changes to maintain a constant air/fuel ratio to the mixture charge. A fuel enrichment lever moves to modify the movement of the fuel control lever to compensate for changes in intake manifold gas temperature as sensed by a coil thermostat, to maintain the constant air/fuel ratio. A fuel enrichment shaft having a piston is connected to the enrichment lever and to a number of spaced, interconnected but relatively movable pistons, and that are adjustable to change the position of the enrichment lever and therefore the air/fuel ratio as a function of exhaust gas recirculation back into the engine, and operating the engine at cruising conditions for an extended period, or operating the engine at idle speed, all with leaner air/fuel ratios.