Abstract: A fuel rail crossover hose connection is disclosed for spaced apart fuel rail segments for V engines, the connection including a separate hose barb fitting installed in each end fuel rail segment in lieu of a conventionally configured end cap, and the crossover hose fit to the projecting ends of the fittings.

Abstract: An integral pressure damper is designed for use with an internal combustion engine having a fuel return line and a fuel rail in a fuel system that requires a damper. The integral pressure damper comprises a fitting securable to the fuel return line, and a damper assembly securable to the fitting. The fitting is securable to the return line. The present invention allows the flexibility of attaching the return line to the fuel rail using braze or any other suitable attachment process, before the damper is attached to the return line. The damper is subsequently secured to the fitting, such as by crimping a housing of the damper to the outside of the fitting, or by crimping the fitting to the outside of the housing.

Abstract: A fuel rail assembly for an internal combustion engine including an elongated rail having a longitudinal inlet passage and a longitudinal outlet passage. The upstream end of the inlet passage is connected to a fuel supply line while the downstream end of the inlet passage is connected through a pressure regulator to the upstream end of the outlet passage. A return fuel line is connected to the downstream end of the outlet passage. A plurality of injector bores communicate with the inlet passage and extend to the exterior of the rail and each injector bore receives one end of a fuel injector, while the opposite end of each injector is sealed within a bore in a runner of an intake manifold. The injectors are mounted in a manner to provide limited tilt to facilitate assembly with the bores in the fuel rail and the manifold reservoir.

Abstract: A fuel rail assembly that possesses a number of novel features relating to joints for connecting metal tubes such as crossover, inlet, and return tubes, to main plastic fuel tubes; retainer clips for retaining various fuel handling components in sockets formed in the plastic fuel tubes, such as retaining a fuel pressure regulator in a plastic cup of a main plastic fuel tube; and the construction of various plastic sockets in a main plastic fuel tube, such as the cups for receiving the fuel injectors.

Abstract: A multi-line fluid supply manifold assembly comprising multiple parallel fluid supply lines for supplying fluid through a common block section to a fluid-receiving member. The assembly contains individual fluid supply fittings to which the fluid supply lines are attached, such as by crimping. The fluid supply fittings are detachable from the assembly so that the fuel lines can be crimped thereto without interference.

Abstract: A connector structure is provided for securely connecting a concentric fuel line having a plurality of tubes to a manifold having corresponding fluid passages in communication with the plurality of tubes. The manifold includes coupling unions having axial bores for receiving one end of each of the plurality of tubes. The connector structure includes mounting holes extending transversely to the axial bores. Each of the mounting holes receives a screw so that the outer edge of the screw is tangentially aligned with a corresponding circumferential portion of the outer wall of each one of the plurality of tubes to mechanically and positively secure the ends thereof in the respective bores.

Abstract: An injection molded fuel injection rail for an automotive engine. The fuel rail is designed to supply fuel to a plurality of electromagnetic fuel injectors oriented at acute angles relative to vertical. The socket inlet apertures through which fuel is fed from the rail interior into the respective fuel injector sockets are located in the bottom of the rail. This prevents the ingestion of vapor, which is normally present in the upper portion of the rail, into the injectors. In order to maintain both sides of these socket inlet apertures at substantially the same level the tilted injector sockets are provided with an occlusive lip along the high side of each inlet aperture. Additionally, the tilted socket axes may be offset laterally downward from the longitidinal rail axis. A plug type fitment is used to close the barrel core pin opening at one end of the rail.

Abstract: A fuel cooling device for motor vehicles which is adapted to cool fuel with refrigerant from an air-conditioning equipment. In a fuel delivery pipe for delivering the fuel into fuel injection valves, refrigerant passages connected to the refrigerant system of the air-conditioning equipment are juxtaposed, adjacently to the fuel passage. The fuel passage is formed longitudinally within the fuel delivery pipe. On both sides of this fuel passage are provided separate refrigerant passages extending in parallel with the fuel passage. These refrigerant passages communicate with each other in one end, and communicate with a refrigerant inlet pipe and a refrigerant outlet pipe in the other end. From the fuel passage are branched off a plurality of branch passages, which have their openings on a side surface of the fuel delivery pipe. The fuel injection valve is installed in each of the openings.

Abstract: A fuel air injection system for a multiple cylinder engine wherein an air manifold is rigidly affixed to all of the fuel air injectors so as to form a unitary assembly that can be removed from the engine as a unit.

Abstract: A metal tube, such as an inlet, outlet, return, or cross-over tube, is connected to a non-metallic fuel rail by means of a tubular sleeve that has one axial end embedded in the fuel rail coaxial with the hole with which the tube is in communication and its other axial end non-embedded. Non-metallic fuel rail material lines the interior of the sleeve from the innermost point of its embedded end to a point that stops short of the outermost point of its non-embedded end. The tube is sealed to this liner, and is prevented from coming out by a retainer, such as a crimp, retention ring or snap ring, that extends radially from the sleeve to overlap a flange that extends around the outside of the tube. The sleeve constitutes an insert onto which the fuel rail is molded during the process of fabricating the fuel rail. A plug of the mold closes off the outer end of the sleeve during molding.

Abstract: The joint between a molded plastic fuel rail and a metal fuel tube uses a metal tube retainer clip to keep the fuel tube inserted within the end of the main fuel rail hole in the molded plastic fuel rail. The molded plastic fuel rail has a slot in its sidewall, and the clip has a forked blade that is inserted through this slot so as to be disposed in interference relationship with an upset bead in the tube to thereby prevent the tube from being withdrawn from the plastic fuel rail. The clip is secured to the fuel rail assembly, either by a resilient clasp portion of the clip snapping onto the metal fuel tube exterior of the plastic fuel rail or by an apertured tab portion of the clip being fastened to the fuel rail by a screw. Where the end of the main fuel rail hole is considerably larger than the diameter of the fuel tube, a tubular plug is used between them.

Abstract: A fuel delivery rail assembly for supplying fuel to a plurality of fuel injectors in an engine is provided. The assembly comprises an elongated conduit having a rectangular section and a plurality of tubular sockets. The conduit and each socket are tightly combined with a connection utilizing a caulking deformation of an annular extension, which is formed within either the conduit or the socket. A seal member is disposed between the surface of the conduit and the bottom side of each socket.

Abstract: A fuel rail for an engine fuel injection system comprises a pair of main tubes on opposite sides of the engine. A baffle is disposed within each main tube, dividing the tube into first and second flow channels. Injectors are fed from the first flow channels. A pair of closely adjacent transverse tubes intercept the main tubes at one end of the main tubes. One transverse tube introduces fuel into the first flow channel of each main tube. The fuel flows through these channels and returns via the second flow channels. The other transverse tube carries return fuel from one main tube to the other main tube where it joins the return flow from the other main tube and the flows enter a pressure regulator. The one main tube contains a twist in its baffle so that its injectors are properly communicated to the inlet fuel entering via the one transverse tube.

Abstract: A fuel distributor for fuel injection systems of internal combustion engines, having at least one fuel injection valve including a housing and a valve carrier that has at least one axial, open, stepped receiving bore that communicates with a fuel supply line, for the fuel injection valve. A bearing shoulder surrounds the receiving bore and the fuel injection valve is supported on the shoulder by a collar and is firmly fastened by an end holder. For acoustic decoupling of the fuel injection valve and the valve carrier, the collar is encompassed by a shaped ring of an elastomer material that fits over the collar on upper and lower face ends, at least in a vicinity of a bearing surface of the bearing shoulder and holder.

Abstract: A reliable, consistent, facile, and economical mounting of a fuel rail on an engine for attenuating vibration between the fuel rail and the engine. An attaching bracket that is joined to the fuel rail has a hole that aligns with a threaded hole in the engine. An elastomeric grommet is situated in the bracket hole and compressed in a controlled manner by a threaded fastener that is passed through the grommet and threaded into the threaded engine hole until a shoulder of the fastener abuts the engine.

Abstract: A fluid conduit system especially for high pressure fuel connections in engines comprises an elongate tube having a fitting asssembly mounted at each end thereof. Each fitting assembly is identical to the other and includes a stepped outer diameter sleeve member having a larger diameter distal portion and a narrower proximal portion. A nut is slidably received about the tube and has a threaded bore therein which is of a diameter greater than the diameter of the larger diameter portion of the sleeve member and a proximal flange surrounding a reduced diameter bore having a diameter substantially greater than the diameter of the narrower portion of the sleeve member but less than the diameter of the larger diameter portion of the sleeve member.

Abstract: An internal combustion engine comprising an engine block including first and second cylinders and first and second combustion air passages for supplying combustion air to the first and second cylinders, respectively, a first carburetor communicating with the first combustion air passage, having therein a first opening, and including a first fuel supply passageway communicating with the first opening, a second carburetor communicating with the second combustion air passage, having therein a second opening, and including a second fuel supply passageway communicating with the second opening, and a fuel manifold including an integrally molded first manifold portion comprising an elongated portion defining a first main passagewy having a closed end and an opposite open end, and a first nipple portion defining a first nipple passageway communicating betwen the first opening and the first main passageway and extending transversely to the first main passageway, and an integrally molded second manifold portion compris

Abstract: A fuel delivery rail assembly is disclosed for supplying fuel to a plurality of fuel injectors in an engine. The assembly includes an elongated conduit having a rectangular or square hollow section with a fuel passage therein and a plurality of sockets for making fluid communication between the conduit and the injectors. One end portion of the conduit at the fuel inlet side thereof is transformed into a circular hollow section by shrinking work or enlargement work from said rectangular or square section. Within the inside of the circular hollow section a fuel inlet pipe is inserted directly or indirectly via a straight adaptor and is brazed together, whereby the fuel inlet pipe is connected in alignment with the conduit.

Abstract: Fuel rail assemblies include a tubular fuel rail for supplying fuel to a fuel injector of an internal combustion engine. Rigid conduits are coupled to the fuel rail so as to allow relative rotational movements therebetween and thus permit, during production, the correction of any angular mismatch between the injectors and the engine with which the injectors are to be associated. A longitudinally extending, lateral ledge may be provided so as to support a clip which retains the injectors in the fuel rail assembly during production. Countercurrent flow within some embodiments of the fuel rail assemblies is provided by positioning an inner conduit within an outer conduit so as to establish therebetween a fuel flow passageway. Thus, the supply and discharge nipples for the fuel rail may be provided in close physical relationship with one another and thereby more easily facilitate their interconnection to a vehicle's fuel system during production.

Abstract: The invention concerns a method of manufacturing a single-block fuel injection rail. The rail according to the inventive process comprises at least one rectilinear hollow tube, to which are joined at least one fuel intake tip, at least one injection intake and rail fastening means. The method comprises striking, in the hot state, a metal billet placed in a die, imparting thereto a longitudinal solid primary shape having transverse branching, whose axes are perpendicular to the longitudinal axes of the primary form, and cooling and machining the primary form so as to give the rail its final shape. The rail is formed from an aluminum alloy and the billet is struck at a temperature between about 430.degree. and 460.degree. C. The process may be used in the manufacture of fuel injection rails for the automobile industry.

Abstract: A manifold for conveying a high-pressure fuel comprises a main pipe having an axial bore and a plurality of ports formed through its wall, connected with the bore and spaced apart from one another along the length of the pipe, and a plurality of branch pipes each connected at one end thereof with one of the ports. The main pipe is provided with a plurality of short cylindrical projections extending laterally outwardly from its wall and each having an axial bore defining one of the ports. Each projection has an outer end provided with a conical or spherical surface, and an outer peripheral surface provided with a screw thread. Each branch pipe has a diametrically enlarged connecting head having a frustoconical or spherical surface closely fitting the conical or spherical surface of one of the projections.

Abstract: A fuel injection line for an internal combustion engine is provided at least one of its ends with a compression nipple formed thereon by upsetting, with a sealing taper portion having a sealing surface at a taper angle relative to the axis of the nipple. The taper portion, with plastic deformation of its sealing surface, serves for sealing against a hollow taper surface, with a corresponding taper angle, of a co-operating portion which is harder than the sealing surface of the nipple. Its rearward bearing surface which is intended for bearing against a hollow taper surface of a cap nut for fixing the nipple is in the form of a spherical segment which blends into the outside peripheral surface of the adjoining pipeline by way of a rounded portion.

Abstract: A fuel supply line, which serves to supply fuel to a fuel injection system for internal combustion engines. The fuel supply line includes receptacles, in each of which a stepped receiving bore is formed with the bores arranged to surround the injection valve in the axial direction and open both at the mouthpiece and the connection end of the injection valve. The injection valve is held by a holding body with a holding shoulder of the injection valve resting on a holding step of the receiving bore. The receiving bore of the receptacle extends outside the flowthrough cross section of the fuel supply line. A filter element is provided in the flow path of the fuel between the flowthrough cross section and fuel openings at the circumference of the injection valve. The fuel supply line, together with the receptacles, is advantageously manufactured of plastic as an extruded part.

Abstract: A low profile fuel injection rail assembly for supplying fuel to a plurality of electromagnetic fuel injectors on an internal combustion engine. The fuel rail assembly is characterized by a plurality of fuel sump chambers defined by linearly spaced apart nodular rail sections which are connected in series by a plurality of tubular rail sections having cross sectional openings of reduced size. A recessed socket which embraces an end of a fuel injector and has an aperture for supplying fuel thereto is formed in each sump chamber.

Abstract: The safety plug device is adapted to releasably plug the fluid fuel line of an internal combustion engine. The device has an external multiple stepped cylindrical configuration and/or central cavity with a like configuration so that it can be used effectively with various diameters of fuel lines and can either be inserted in the central opening of the fuel line or can be disposed over the fuel line, to prevent loss of fuel after the fuel line is removed from, for example, a carburator. The device is preferably of resilient elastomeric material resistant to deterioration by fuel and can include metal inserts, or be all metal, ceramic, etc. Thus, danger of fire from spilled fuel such as gasoline, kerosene, oil and the like can be readily avoided by the use of the plug device. Moreover, because the plug device physically reinforces the fuel line, clamping of the fuel line at the plug device does not damage the fuel line, in contrast to conventional clamping which breaks down the fuel line.

Abstract: An injection line connection for internal combustion engines having for each pressure connection a connecting fitting which hitherto was upset out of the material of the injection line but which is still defective and which can be pressed by a cap nut, by way of a pressure ring, against an internal taper portion of a connecting member which carries the cap nut, is also suitable for thinner injection lines, free of disadvantages, by virtue of the following features, some of which are known and which are reproduced here by way of abstract:(a) the injection line (1) is a wall thickness in the range of from 1/5 to 1/3 of its outside diameter (D);(b) each pressure ring (6) is provided with a support projection (10) which is rounded off at the end towards the connecting fitting and which is of a tapered configuration along its outside periphery, while the associated connecting fitting (3) comprises the end of the injection line (1) which is flanged over outwardly about the support projection (10) and there forms th

Abstract: A connector head construction for a high-pressure fuel injection tube comprises a metal tube having a relatively large wall thickness and small diameter and including an abacus-bead-shaped connector head having a front outer peripheral pressor wall for engagement with a mating connector seat and a rear outer peripheral pressure-bearing wall for engagement with a fastening nut on the metal tube. The connector head includes an integral gradual slant surface extending as a skirt from a top of said pressure-bearing wall at an angle ranging from 2.degree. to 5.degree. to the axis of metal tube and having a length equal to at least an outside diameter of the metal tube.

Abstract: A fuel injection system for internal combustion engines with multiple fuel injection valves. The fuel injection system includes a dimensionally stable fuel manifold distributor with nipple plug connections, by means of which the fuel is directed to the individual injection valves. The fuel manifold distributor is disposed over the injection valves and is pitched with respect to the horizontal, with a fuel injection connection located at the lowest point of said manifold and connected to the pressure side of a fuel pump, with a return line connection provided at the highest point of the fuel manifold distributor leading to a return flow line, over which a portion of the fuel may be redirected to a pressure regulator and from there to the suction side of a fuel tank to which the fuel pump is connected.

Abstract: A fuel rail supporting injectors for delivering fuel to an engine has fuel supply and fuel return passages interconnected through a recess in a plug at each end of the fuel rail. The recesses are calibrated to direct the proper proportion of the fuel past the injectors. The fuel supply passage is configured to allow separation of fuel vapor from the liquid fuel received by the injector and to conform to the shape of the plug and the fuel return passage.

Abstract: A fuel rail assembly for a V engine has a pair of fuel rails connected by crossover and discharge conduits. The crossover and discharge conduits are secured to the fuel rails in a manner which permits relative motion between the fuel rails without loss of fuel from the fuel rail-conduit intersection.

Abstract: This invention relates to a petrol injector protection sheath constructed of thermally insulating material such as rubber, for preventing overheating of said injector.

Abstract: A bulkhead-fluid-line connector (10) is disclosed for supporting and directly sealably connecting two fluid lines (20,22) which conduct a pressurized fluid, such as fuel, through a housing wall (16) of an internal combustion engine (18).Unlike conventional bulkhead-fluid line adapters or unions which have a plurality of fluid supply path joints, the connector (10) requires only one fluid supply path joint by directly and sealably connecting the end portions (52,54) of the respective fluid lines (20,22) with a releasable coupler (56).

Abstract: A fuel injection system for internal combustion engines having a multiplicity of injection valves which serves to provide fuel supply is proposed. The fuel injection system includes a common, rigid fuel line, having plug nipples into which the injection valves associated with the individual cylinders of the engine can be inserted in a sealing manner. The fuel line comprises one fuel distributor line and one fuel return flow line located one above the other. Each injection valve has one inlet stub and one outlet stub disposed concentrically relative to one another, protruding into the plug nipple in such a manner that the inflow stub communicates with the fuel distributor line and the outflow stub communicates with the fuel return flow line. As a result, not only is it possible to provide simple sealing toward the outside between the injection valve and the plug nipple but also rapid assembly of the fuel injection system is assured.

Abstract: A connecting conduit arrangement with several branch sections which lead to attachment points where hollow fasteners are provided. The arrangement includes a drain conduit connectible to injector-nozzle holders of internal combustion engines with fuel injection. A one-piece conduit is included in the arrangement having at least one branch section. The branch section is bent at an angle of about 180.degree. in the vicinity of the attachment point to provide a bent branch section. A connecting part is also disclosed which is operatively associated with the hollow fastener belonging therewith.

Abstract: The invention relates to a fuel injection valve having a plug connection to the fuel line, wherein at least two sealing rings are provided between the connection stud and the fuel line nipple in order to obtain emergency sealing capacity.

Abstract: A fuel injection installation for internal combustion engines having a plurality of injection valves for supplying fuel to the engine. Each injection valve is sealed to fuel distributing line and to either the intake manifold of the engine, or to the cylinder head of the engine, by at least one O-ring, each O-ring being braced only in the radial direction. Each injection valve is fixed in an axial direction on the fuel distributing line by means of a fastening plate yielding in the radial direction and embodied as bracket-like, which is insertable through appropriately shaped recesses in each insertion nipple on the fuel distributing line and can be snapped into an annular groove of each injection valve. As a result, there is assured not only a secure connection between the fuel distributing line and the injection valves which compensates for axial clearances required for manufacture, but also rapid mounting or dismounting of the fuel injection installation.

Abstract: A fuel injection system is proposed which serves to supply fuel to a mixture-compressing, externally ignited internal combustion engine in accordance with operational parameters of the engine. The fuel injection system includes a metallic fuel distributor tube, which communicates via at least one branch line with at least one fuel injection valve, wherein the branch line is embodied as a metal tube and is connected with the fuel injection valve by means of a threaded assembly. The material used for the branch line is easily bendable metal. Between the threaded assembly at the branch line and the fuel injection valve, a thin-walled metallic bellows is provided, by means of which a lateral displacement between the attachment point of the branch line at the fuel distributor tube and the installation point of the fuel injection valve is compensated for, and the noise of operation produced by the fuel injection valve is damped.

Abstract: A fuel injection system is proposed for internal combustion engines having a plurality of injection valves for supplying fuel to the engine. Each injection valve is connected by a yieldable support bracket with a rigid fuel distributor line. The bracket is mounted pivotally with an annular coller secured to the injection valve. The fuel distributor line is arranged to engage rib-like carrier members connected with the internal combustion engine and is held against the carrier member by yielding clamp elements. After the valves are engaged in the sockets of the fuel distributor line and the bore of the cylinder head, then the support brackets are swung upwardly to tension the seal elements that are disposed in proximity to the opposite ends of the valve. As a result, not only a more secure connection between the fuel distributor line and the injection valves is obtained, but also rapid assembly or disassembly of the fuel injection system.

Abstract: A fuel rail of unitary construction for supplying fuel to a plurality of fuel injectors in an engine such as a V-8 engine. The fuel rail contains a plurality of connectors, one for each injector. Each connector is fitted with an one for each injector. Each connector is fitted with an O-ring to provide a liquid tight seal between the connector and each injector. The connector and O-ring are so sized to permit the connector to swivelably engage each injector permitting the injector to rotate in a conical fashion about an axis through the center of the connector.