Abstract: An apparatus for injecting a fuel-air mixture, including a cup-shaped gas delivery hood with a bottom part of a jacket part between the valve end of a fuel injection valve and a gas delivery element, the jacket part has at least one gas delivery opening through which gas is injected and which strikes the injected fuel. The size of the opening cross section, which meters the gas, of the at least one gas delivery opening is accordingly fixed from the very outset and need not be adjusted. Moreover, because of a directional flow of the delivery of gas, very good atomization of the fuel is attained. The embodiment of the apparatus is especially well-suited for use in mixture-compressing internal combustion engines with externally supplied ignition.

Abstract: A fuel nozzle comprises a body (1) with a cylindrical sleeve (2) accommodating a tubular element (3) having an axially extending channel (16). At the end of the element (3) there is arranged an acoustic head (5) having a conically shaped surface (6) adapted to generate acoustic vibrations. An annular recess (12) is formed on the surface (6). The nozzle body (1) carries a reflecting surface (9) formed as a plurality of pyramids. The fuel nozzle is provided with a device (18) adapted to swirl the gas flow and a regulating element (17) accommodated in the axial channel (16).

Abstract: A fuel collision surface 40 is provided so as to be spaced from and axially opposite to a fuel injection port 14. A ratio of a width of the fuel collision surface 40 to a diameter of the fuel injection port 14 is set in the range of 0.2-0.3 so that fuel flows in a membrane-like pattern in branch ports 34 without attaching to the branch port surfaces and is effectively atomized. Further, it is desirable that an angle defined between an air injection passage 36 and a fuel injection valve axis is set in the range of 45.degree.-75.degree. so that a good air atomization due to air injection is obtained.

Abstract: A fuel injection valve for injecting a fuel-gas mixture into a mixture-compressing internal combustion engine with externally supplied ignition comprising a mixing conduit secured to one end of the fuel injection valve. The mixing conduit includes at least one cross-sectional constriction and an adjoining widening of the cross-section, through which the fuel-gas mixture flows at increased speed which tears off the fuel film from the wall of the mixing conduit and atomizes it into fine fuel droplets. In this way, the quality of fuel atomization can be substantially improved.

Abstract: Improved fuel injection valve arrangement for so called dual fuel engines operated using two types of fuel, comprising a valve housing (2), which includes at least one nozzle orifice (5) opening into a combustion chamber of a cylinder in a combustion engine and which further includes first valve means for gaseous fuel and, independently controllable thereof, second valve means for pre-injection fuel used for ignition of the gaseous fuel. The valve means for the gaseous fuel comprises an axially movable, cylindrical, substantially hollow valve member (3), the mantle surface of which is sealed to the valve housing (2), at least at the end located at the side of the combustion chamber of the cylinder, and inside of which there is a separate valve means (7;8) for the pre-injection fuel.

Abstract: The apparatus has a fuel injection valve with an injection end which rests on a bearing face of a stepped longitudinal bore. An annular gas conduit communicates with a gas source and an annular gas gap formed between the bearing face and a mixing chamber, and an exact, symmetrical, annular gas gap is formed between the injection end and the stepped longitudinal bore. The embodiment of the apparatus is especially suitable for use in internal combustion engines with externally supplied ignition.

Abstract: The atomizer is a cap-shaped shroud that contains a flat stamped metal insert. When assembled onto the nozzle of a fuel injector, the atomizer causes the insert to be axially sandwiched between the shroud's end wall and the exterior end of the nozzle. In the zone of sandwiching, the insert has circumferential discontinuities that in cooperation with the nozzle end and the shroud's end wall define air assist openings for the assist air to flow radially inwardly toward the injected fuel that has just been injected from the nozzle.

Abstract: A fuel supply device comprising a pressurized air passage, a nozzle opening formed at a tip end of the pressurized air passage to inject fuel and pressurized air, a valve for opening or closing the nozzle opening, a fuel injector for injecting fuel in the pressurized air passage, and a guide member arranged in the pressurized air passage between the nozzle opening and the fuel injector. The guide member has a least three contacting faces which are in contact with a cylindrical inner wall of the pressurized air passage, and at least three substantially flat faces each extending approximately in a straight line between the contacting faces which are located on each side of the flat face to form a narrow passage between the cylindrical inner wall of the pressurized air passage and the flat face.

Abstract: Two embodiments of air/fuel injectors wherein the fuel is injected to a chamber through a venturi section that receives pressurized air so that the fuel is injected to an area of lower pressure than the air pressure. The chamber is communicated with the engine through an injector valve which opens and closes. The isolation of the point of fuel delivery from the injector valve reduces the likelihood of fuel variations due to variations of the lift of the injector valve. In one embodiment, the venturi section is formed co-axially with the chamber and in another embodiment it is formed externally of the chamber.

Abstract: A single fuel metering injector directs fuel through a plurality of nozzles to a plurality of charge delivery injectors.

Abstract: In a fuel injection system for a multi-cylinder internal combustion engine, a plurality of injection nozzles discharge fuel adjacent the engine inlet ports, and a single injector meters the fuel to all of the injection nozzles. The injector may include an annular valve surface, a plurality of discharge passages opening through the valve surface to direct fuel to the nozzles, and a single valve member associated with the valve surface to control fuel delivery to the discharge passages. The injector may include a rectifier valve that admits air to the discharge passages when the valve member precludes fuel delivery to the discharge passages. The fuel discharge lines that connect the injector discharge passages to the nozzles may be surrounded by air lines.

Abstract: A number of embodiments of fuel injection systems using air/fuel injection and wherein the fuel is not delivered to the injection unit until after the injection valve is open so that fuel cannot flow back into the pressurized air system. In some embodiments, a single valve element and valve seat controls the flow of both fuel and air.

Abstract: An apparatus for the combined blow-injection of fuel and air for fuel injection systems of internal combustion engines having a housing with a fuel connection an air connection and a blow-injection opening communicating with the air and fuel connections. Two valves are disposed in the housing and simultaneously actuated by an electromagnet. Both valves are disposed concentrically with one another, directly at the blow-injection opening to make it possible for the mixing ratio to be determined solely by the opening duration of the valves by means of synchronously clocked metering of fuel and air. The valve seat of the air valve and the valve seat of the fuel valve are carried in common by a hollow shaft valve member actuated by the electromagnet.

Abstract: A fuel injection system for a multi-cylinder internal combustion engine, which includes a rigid elongated unitary member incorporating a gas supply duct, a fuel supply duct and a fuel return duct, each of which extends in the direction of elongation of the unitary member. A separate fuel metering device and fuel injecting device is provided for each engine cylinder. The fuel metering device is arranged to deliver metered quantities of fuel to the fuel injection device and is in communication with the fuel supply and fuel return ducts so that fuel can be circulated through each of the fuel metering devices. The fuel injecting devices are each in communication with the gas duct and communicable with one of the engine cylinders. The fuel injection devices are adapted to effect delivery of a metered quantity of fuel entrained in gas supplied from the gas duct when the fuel injecting device is in fluid communication with a cylinder.

Abstract: A nozzle for injecting a viscous fluid, such as a molten plastic and a non-viscous fluid, such as a gas, includes a nozzle body having an inlet end, a discharge end and a flow passage for viscous fluid extending from the inlet end to the discharge end. A shut off valve device is provided for reciprocating in the nozzle body flow passage to control the flow of viscous fluid through the nozzle body discharge end. The shut off valve device includes a valve body and a non-viscous fluid flow passage provided in the valve body. A baffle device is located in the non-viscous fluid flow passage of the shut off valve for retarding a flow of viscous fluid in the non-viscous flow passage.

Abstract: A fuel injector nozzle comprising an inner member including an axially extending fuel passage adapted to communicate with a source of fuel under pressure and having an outlet end with a surface defining a valve seat, and an outer surface extending axially outwardly and converging to the valve seat, a valve member located in the fuel passage and movable axially thereof relative to the valve seat between open and closed positions, which valve member includes a valve head which is engageable with the valve seat when the valve member is in the closed position and spaced from the valve seat when the valve member is in the open position, and which includes an axially outwardly extending and converging surface, and an outer member surrounding the inner member and the valve head in spaced relation thereto and defining therebetween an air flow passage adapted to communicate with a source of air under pressure, which outer member includes an axially outwardly extending and converging surface located in spaced relation

Abstract: A fuel injector for an internal combustion engine includes a body having fuel and air inlet ports and fuel and air outlet ports located within the combustion chamber of the engine cylinder. A pair of valves open and close the air and fuel outlet ports and are sequenced so that fuel is introduced into a flow of air and the flow of air continues briefly after the fuel flow has been discontinued.

Abstract: The injection device has a nozzle body with a needle valve controlled by id. At the front end of the nozzle body there are, in the case of a single hole nozzle, one injection channel and in the case of a multi-hole nozzle, several injection channels which may be at any angle to each other. In the narrowest cross section of the injection channel suction slots lead into the combustion chamber. Air is drawn in from the combustion chamber by the jet of fuel leaving the injection channel. This air mixes with the fuel in the narrowest cross section of the injection channel so that, at the base of the injection jet, there is a two-phase flow having particularly favorable properties for the subsequent mixture formation.

Abstract: A device to atomize and inject a coal slurry in the combustion chamber of an internal combustion engine, and which eliminates the use of a conventional fuel injection pump/nozzle. The injector involves the use of compressed air to atomize and inject the coal slurry and like fuels. In one embodiment, the breaking and atomization of the fuel is achieved with the help of perforated discs and compressed air. In another embodiment, a cone shaped aspirator is used to achieve the breaking and atomization of the fuel. The compressed air protects critical bearing areas of the injector.

Abstract: A fuel atomizing nozzle for use as a component part of a pressurized carburetor for an internal combustion engine in an automotive vehicle includes a housing forming part of the induction fluid passage through the carburetor, the housing having an inlet passage therein terminating at one end at an induction port, flow through which is controlled by a throttle-nozzle in the form of a poppet valve having a head and a stem, the stem being slidably received within a stepped valve guide bore in the housing, the guide bore having a stepped enlarged internal diameter adjacent to the induction passage to form, with the stem of the throttle-nozzle, a fuel discharge outlet, a fuel pressure regulator is associated with the housing to control fuel flow from a source of fuel under pressure to the fuel discharge outlet.