Abrégé

The invention relates to a method for producing a screw foundation (1) for fastening elements in an underlying surface, in which method at least one first cylindrical tube (5) is provided as a first initial shape and at least regions of the first tube (5) are provided, adjacent to a front insertion end (1b), with a thread-like outer contour (4) for screwing into the underlying surface, wherein a contour (2) for a screwing-in tool is moulded into a rear end (1a) of the first tube (5) by means of a forming process. According to the invention, the rear tubular end (1a) of the first tube (5) is radially moulded from the outside without an inner counter mould in such a way that the contour (2) is formed in a star shape with internal and external toothing (2a, 2b).

Classes IPC  ?

• E04H 12/22 - Semelles ou montures pour pylônes ou poteaux
• B21D 15/04 - Opérations permettant d'obtenir des tubes à surface ondulée les ondulations étant faites dans le sens transversal, p. ex. helicoïdalement
• B21D 53/24 - Fabrication d'autres objets particuliers d'écrous ou pièces filetées similaires
• B21D 53/60 - Fabrication d'autres objets particuliers d'articles de coutellerieFabrication d'autres objets particuliers d'outils de jardinage ou d'outils similaires
• E02D 5/80 - Ancres de fondation
• B21H 3/02 - Fabrication de corps hélicoïdaux ou de corps ayant certaines parties de forme hélicoïdale de corps à filetage extérieur

Abrégé

A hollow rotor shaft for an electric machine rotor rotating about a longitudinal axis includes: a cylinder shell surrounding a shaft cavity; and end flanges on both shell ends transitioning into respective shaft journals. One end flange has an inlet for leading a cooling medium into the cavity and onto the shell inner surface. Inside the cavity, guides distribute cooling medium entering via the inlet over the inner surface, the shell having at least one cooling-medium outlet opening. The shaft is formed in one piece from a tubular initial body. The guides are raised contours formed from the inner surface and protruding into the cavity. The shaft is flow formed by pressing the raised contour out of the inner surface. The end flanges with respective shaft journals are formed by pressing the two initial body ends. The at least one cooling-medium outlet opening is formed in the raised contour.

Classes IPC  ?

• H02K 1/32 - Parties tournantes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 7/00 - Dispositions pour la mise en œuvre d'énergie mécanique associées structurellement aux machines dynamo-électriques, p. ex. association structurelle avec des moteurs mécaniques d'entraînement ou des machines dynamo-électriques auxiliaires

Abrégé

The invention relates to a method for producing a hollow cylindrical workpiece from a solid initial workpiece, in which a cup-shaped intermediate form is produced in the solid initial workpiece without cutting by drilling pressure, in which a rolling mandrel is pressed axially into the initial workpiece and at the same time at least one forming roller is provided on an outer face of the outer workpiece. The intermediate form has a solid bottom portion and a sleeve portion attached to the bottom portion with a first length and a first wall thickness. The cup-shaped intermediate form is further subjected to stretch-flow forming in the course of which the sleeve portion is stretched to a second length, which is longer than the first length, and to a second wall thickness which is smaller than the first wall thickness.

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21C 23/20 - Fabrication de produits non revêtus par extrusion inversée
• B21K 1/06 - Fabrication d'éléments de machines d'arbres
• B21H 1/20 - Fabrication d'articles en forme de solides de révolution de cylindres, p. ex. laminés transversalement laminés longitudinalement
• B21J 5/10 - Perçage des billettes
• B21J 1/06 - Méthodes ou dispositifs de chauffage ou de refroidissement spécialement adaptés aux opérations de forgeage ou de pressage

Abrégé

The invention relates to a method for producing a hollow shaft, which has at least one shaft shoulder, from a tubular preform by means of roller spinning. Provision is made here for the tubular preform (1) to be arranged, during the entire forming operation, on a stretching mandrel (2) having at least two regions (2a, 2b) with different outside diameters (D1, D2), wherein a first region (2a) has an outside diameter (D1) corresponding to the inside diameter (D1) of the tubular preform (1), and at least one second region (2b) has an outside diameter (D2) corresponding to the inside diameter (D2) of the at least one shaft shoulder (7), which is to be produced, of the hollow shaft, wherein the first region (2a) of the stretching mandrel (2) is fixed by its free end (2c) during the entire forming operation, wherein, in a first forming step, the tubular preform (1) is pressed by a clamping means (4) radially against the first region (2a) of the stretching mandrel (2) and, by roller spinning by means of at least one roller-spinning roller (5), the tubular preform (1) is drawn in towards its free end about the at least one second region (2b) of the stretching mandrel (2) with the formation of a radial end face (6) and the at least one shaft shoulder (7), and, in a second forming step, along the longitudinal axis (L) of the tubular preform (1), a tubular mandrel (8) is pressed by its end face (9) axially against the radial end face (6) produced in the first forming step, the clamping means (4) is released and the as yet not formed region of the tubular preform (1) is stretched out along the first region (2a) of the stretching mandrel (2) by means of at least one roller-spinning roller (5).

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21K 21/12 - Formage des extrémités d'articles creux

Abrégé

The invention relates to a hollow rotor shaft for a rotor, which rotates about a longitudinal axis, of an electric machine, comprising a cylindrical casing (2), which surrounds a shaft cavity (3), and end flanges (4) arranged on the cylindrical casing (2) on both sides. At least one end flange (4) transitions into a hollow shaft journal (5), and the outer circumferential surface of the shaft journal (5) is designed as a bearing seat (7) in some regions. Rotor windings which are connected to power feed lines (10) are arranged on the outer circumference of the cylindrical casing (2), wherein the power feed lines (10) lead to sliding contacts (11) at the end facing away from the rotor windings, said sliding contacts being arranged on the free end of the shaft journal (5). According to the invention, the rotor shaft is formed as a single piece from a tubular or circular starting body by means of a shaping process using a flow forming method, and the power feed lines (10) are arranged in the cavity (6) of the shaft journal (5) at least in the region of the bearing seat (7) and are integrated into a tubular casing (12) made of plastic, said casing being injection molded onto the inner circumferential surface of the shaft journal (5) as a single piece. The tubular casing (12) made of plastic together with the integrated power feed lines (10) extends axially outwards beyond the free end of the shaft journal (5) into a free end region (12a), and the sliding contacts (11) are integrated into the tubular casing (12) and are arranged on the outer circumference of the free end region (12a).

Classes IPC  ?

• H01R 39/16 - Assemblage de collecteurs ou de bagues collectrices avec les arbres au moyen de matériau moulé ou fondu appliqué pendant ou après l'assemblage
• H02K 13/00 - Association structurelle de collecteurs de courant et de moteurs ou de génératrices, p. ex. plaques de montage des balais ou connexions avec les enroulementsAgencement des collecteurs de courant dans les moteurs ou les génératricesDispositions pour améliorer la commutation

Abrégé

A method for producing a hollow shaft from a tubular preform by pressure rolling shapes each end of the preform using at least one forming roller. A tubular preform with a round or polygonal cross-section is used, and the preform is held on a workpiece holder in the central tube region during the entire production process until the hollow shaft is completed.

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21D 41/04 - RétrécissementFermeture
• B21H 1/18 - Fabrication d'articles en forme de solides de révolution de cylindres, p. ex. laminés transversalement
• B21K 1/06 - Fabrication d'éléments de machines d'arbres

Abrégé

The invention relates to a process for manufacturing a rotor shaft for an electric motor, said rotor shaft having a single-piece circumferential stop for a laminated rotor core that is to be disposed on the outer circumference of the rotor shaft. According to the invention, the stop (6) is formed by compression rolling a cylindrical metal blank (1) by means of at least one compression roll (3) without any shaping tool that externally surrounds the cylindrical blank (1).

Classes IPC  ?

• H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• F16C 3/02 - ArbresManivelles
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 7/00 - Dispositions pour la mise en œuvre d'énergie mécanique associées structurellement aux machines dynamo-électriques, p. ex. association structurelle avec des moteurs mécaniques d'entraînement ou des machines dynamo-électriques auxiliaires

Abrégé

A housing for an electric machine, in particular an electric motor, with an inner housing part (3) and an outer housing part (4) which surrounds the inner housing part (3), wherein there is an intermediate chamber (5) which forms a cooling duct between the two housing parts (3, 4), wherein one housing part is provided on the side which faces the intermediate chamber (5) with a cooling duct structure which consists of plastic, and wherein one housing part consists of metal and the other housing part consists of plastic, is to be capable of being produced particularly simply. This is achieved by virtue of the fact that the cooling duct structure has webs (3) which are moulded onto the housing part (3, 4) which is made from metal, wherein the webs (3) configure cooling ducts which are open towards the housing part (3, 4) made from metal along the length of the intermediate chamber (5).

Classes IPC  ?

• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 5/06 - Enveloppes en métal coulé
• H02K 15/14 - EnveloppesEnceintesSupports
• H02K 5/08 - Enveloppes en matériau isolant

Abrégé

The invention relates to an electric machine with a rotor and a stator (1) which surrounds said rotor concentrically, wherein the stator (1) has a shell-shaped outer surface (2) which is surrounded by a housing with a cooling duct structure, wherein the cooling duct structure which consists of plastic is moulded onto the shell-shaped outer surface (2) of the stator (1), and the stator (1) with the cooling duct structure is surrounded on the outer side by a housing outer part (10) which is made from plastic. It is provided here that the cooling duct structure has webs (3) which are moulded onto the shell-shaped outer surface (2) of the stator (1) and delimit cooling ducts (4) which are open towards the shell-shaped outer surface (2) of the stator (1), wherein at least one electrically conductive foil (5) or coating is integrated into the cooling duct structure.

Classes IPC  ?

• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement
• H02K 11/02 - Association structurelle de machines dynamo-électriques à des organes électriques ou à des dispositifs de blindage, de surveillance ou de protection pour la suppression des parasites d’origine électromagnétique
• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques

Abrégé

A method for chipless production of a rotationally symmetrical body from a circular sheet metal blank shapes the circular sheet metal blank into a pot-shaped body by pressing or pressure rolling around an inner mandrel, and a hub-shaped projection protruding outward from the base of the pot-shaped body is molded on by pressing around a central projection. The circular sheet metal blank is clamped only in the radial inner region of the blank in the axial direction between the inner mandrel and at least one projection during the shaping process.

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage
• B21D 51/04 - Fabrication d'objets creux caractérisés par la structure des objets d'objets à pièces rapportées, p. ex. objets à fond ou à couvercle fixés rigidement

Abrégé

The invention relates to a hollow rotor shaft for a rotor of an electric machine, which rotor rotates about a longitudinal axis, the hollow rotor shaft comprising: a cylinder shell (2), which surrounds a shaft cavity (3); and end flanges (4, 5), which are arranged on the cylinder shell (2) at both ends of the cylinder shell. The end flanges (4, 5) transition into respective shaft journals (6, 7). In one of the end flanges (4), in particular in its shaft journal (6), an inlet (8) is provided, via which a cooling medium can be led into the shaft cavity (3) and onto an inner surface (10) of the cylinder shell (2). Inside the shaft cavity (3), cooling-medium guiding elements are provided, which distribute the cooling medium entering via the inlet (8) over the inner surface (10) of the cylinder shell (2). At least one cooling-medium outlet opening (13, 15) is provided in the cylinder shell (2). The hollow rotor shaft (1) is created as a single piece from a tubular initial body (20) by means of forming. The cooling-medium guiding elements are in the form of a raised contour (11, 11a, 11b), which is formed from the inner surface (10) of the cylinder shell (2) and protrudes into the shaft cavity (3). According to the invention, the hollow rotor shaft is created by means of flow forming, wherein the raised contour (11, 11a, 11b) is pressed out of the inner surface (10) of the cylinder shell (2) and the two end flanges (4, 5) with the respective shaft journals (6, 7) are formed by the pressing of the two ends of the initial body (20), and the at least one cooling-medium outlet opening (13, 15) is formed in the raised contour (11, 11a, 11b).

Classes IPC  ?

• H02K 1/32 - Parties tournantes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 7/00 - Dispositions pour la mise en œuvre d'énergie mécanique associées structurellement aux machines dynamo-électriques, p. ex. association structurelle avec des moteurs mécaniques d'entraînement ou des machines dynamo-électriques auxiliaires
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p. ex. de l'huile

Abrégé

The invention relates to a method for producing a screw foundation (12) for securing elements in the ground, in which a cylindrical tube (1) is provided as an initial form and a conical front portion (10) tapering to an insertion tip (9) is then moulded on to the cylindrical tube (1) by means of a non-cutting process, the front portion (10) being provided at least in some regions with a thread-like contour (11) for screwing into the ground. According to the invention, an inner contour (2) for a screwing tool is formed integrally in a rear end (1a) of the tube (1) by flow forming, and the front portion (10) and the thread-like contour (11) are formed exclusively by flow forming.

Classes IPC  ?

• E04H 12/22 - Semelles ou montures pour pylônes ou poteaux
• B21H 3/02 - Fabrication de corps hélicoïdaux ou de corps ayant certaines parties de forme hélicoïdale de corps à filetage extérieur
• B21D 53/24 - Fabrication d'autres objets particuliers d'écrous ou pièces filetées similaires
• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage

Abrégé

The invention relates to a method for producing a hollow shaft from a tubular preform by means of pressure rolling, wherein each end of the preform is shaped using at least one forming roller, a tubular preform (1) with a round or polygonal cross-section is used, and the preform (1) is held on a workpiece holder (2) in the central tube region (1a) during the entire production process until the hollow shaft is completed.

Classes IPC  ?

• B21D 22/14 - Repoussage des pièces de révolution par rotation
• B21H 5/00 - Fabrication de roues dentées
• B21K 1/06 - Fabrication d'éléments de machines d'arbres
• B21D 41/04 - RétrécissementFermeture

Abrégé

The invention relates to a fuel distributor for an internal combustion engine, comprising a housing (2) which has an elongate cavity (3). A fuel inlet opening (4) into the cavity (3) and a plurality of fuel outlet openings (5) out of the cavity (3) for respective fuel injectors are provided in the housing (2), the fuel outlet openings being adjacent in the longitudinal direction. A tubular insert body (12) having a longitudinal groove (17) is arranged in the cavity (3). The fuel outlet openings (5) and the fuel inlet opening (4) are fluidically connected by means of the longitudinal groove (17). The tubular insert body (12) is formed from a tubular inner body (13) and a tubular outer body (14) that is arranged radially outside on the inner body (13), the inner body and the outer body being connected to one another, a longitudinal cut-out (16) being formed in the tubular outer body (14) in order to form the longitudinal groove (17).

Classes IPC  ?

• F02M 55/02 - Conduits entre pompes d'injection et injecteurs
• F02M 55/04 - Moyens pour amortir les vibrations dans les entrées de pompes d'injection

Abrégé

The invention relates to a method for the chipless production of a rotationally symmetrical body (17) from a circular sheet metal blank. The circular sheet metal blank (8) is shaped into a pot-shaped body (10) by pressing or pressure rolling about an inner mandrel (2), and a hub-shaped protrusion (16) which protrudes outwards from the base of the pot-shaped body (10) is molded on the body by pressing about a central projection (3). The aim of the invention is to improve the method, in particular simplify the production process and ensure a flawless concentricity of the shaped regions. This is achieved in that the circular sheet metal blank (8) is clamped only in the radial inner region of the blank in the axial direction between the inner mandrel (2) and at least one projection (3) during the entire shaping process.

Classes IPC  ?

• B21D 22/16 - Repoussage des pièces de révolution par rotation sur des mandrins ou gabarits de formage

Abrégé

The invention relates to a device for transmitting a torque from an internal combustion engine to an auxiliary unit, in particular to a compressor of an air conditioning system of a motor vehicle, comprising an auxiliary unit shaft and a belt pulley that is arranged on the auxiliary unit housing in such a way that the belt pulley can rotate, wherein the belt pulley and the auxiliary unit shaft are connected to each other by means of an overload safety mechanism, wherein the overload safety mechanism is designed in such a way that the connection between the belt pulley and the auxiliary unit shaft is interrupted when a specified torque is exceeded, wherein the overload safety mechanism has a spring disk having a plurality of spring arms, which are connected at ends thereof to connecting elements of a disk-shaped driver for conjoint rotation until the specified torque is reached. The problem addressed by the invention is the improvement of said device in such a way that the construction of said device is significantly simplified, the design of the response behavior of the overload safety mechanism is improved, and loads in the direction of the axis of rotation are avoided. This problem is solved in that each connecting element of the driver (7) is designed as a pocket-shaped receptacle (11) in the driver (7), wherein the end (10a) of the particular spring arm (10) lies against a contact surface (12) of the pocket-shaped receptacle (11) in a force-locked manner under spring stress, wherein each pocket-shaped receptacle (11) is designed as a hook-shaped web (13) that is cut out from the driver (7) in some regions.

Classes IPC  ?

• F16D 7/04 - Accouplements à glissement, p. ex. glissant en cas de surcharge, pour absorber les chocs du type à rochet
• F16D 43/202 - Embrayages automatiques à commande interne actionnés entièrement mécaniquement commandés par le couple, p. ex. embrayages à déclenchement en cas de surcharge, embrayages à glissement avec dispositifs par lesquels le couple fait varier la pression d'embrayage du type à rochet
• F16H 35/10 - Dispositions ou dispositifs pour absorber la surcharge ou empêcher tout dommage par surcharge
• F16H 55/36 - Poulies

Abrégé

The intention is to substantially simplify and improve a method for producing a rotary vibration damper (10) having a hub part (6), which can be connected in a rotationally fixed manner to a shaft, and a flywheel rim part (8), which is connected to the hub part (6) by means of an elastomer layer (12), wherein the elastomer layer (12) is arranged in a gap between the flywheel rim part (8) and a region (5) of the hub part (6) that is coaxial to the flywheel rim part (8), the hub part (6) and the flywheel rim part (8) are initially produced in the form of a single-piece workpiece and then the hub part (6) and the flywheel rim part (8) are mechanically separated from each other. This is achieved in that, to form the single-piece workpiece (2), first a blank plate (1) is formed into a well shape in such a manner that the single-piece workpiece (2) has adjacent to the well bottom (3) the coaxial region (5) of the hub part (6), adjacent thereto a radially extended annular or conical web region (7) and adjacent thereto the flywheel rim part (8), wherein the single-piece workpiece (2) is then divided into the hub part (6) and the flywheel part (8) by separation of the annular web region (7) in the axial direction.

Classes IPC  ?

• F16F 15/30 - Volants
• B21D 53/26 - Fabrication d'autres objets particuliers de roues ou de pièces similaires

Produits et services

Heat exchangers, cooling systems and cooling equipment for internal combustion engines and alternative propulsion (electric motors, fuel cells) and their parts and components as modules, included in class 7; fan clutches, fan wheels, exhaust gas recirculation modules for motor vehicles; exhaust gas heat exchanger; exhaust gas recirculation (EGR) cooler; oil pans for land vehicles. Vehicles for locomotion by land, in the air and on the water, and parts and accessories therefor, included in class 12; axle boots for vehicles; knuckles; starter ring gears, drive shafts for land vehicles; camber plates for land vehicles; torque limited, torque converters for land vehicles, vehicle brakes; rims for vehicle wheels; flex plates, joints and drive shafts for land vehicles; encoder wheels, housings for parts of land vehicles (other than for engines), hinge washers for axles; transmissions for land vehicles, fuel lines, fuel rails; couplings (connections) for land vehicles; disks and disk carriers as motor vehicle parts, ventilation systems [climate] for vehicles, engine parts, hydraulic and mechanical belt drive systems, pulleys, idler wheels, tension rollers, axles, wheel covers, wheel bearing units, vibration and torsional vibration dampers, included in class 12; flywheels.

Abrégé

A device for fastening a fuel rail should have functional reliability while being as easy as possible to produce and flexibly adaptable to different installation situations. This is achieved by two pot-shaped accommodating sleeves (2, 3) connected to each other at the bottom sides thereof, into each of which a respective fuel rail line segment can be inserted, which can be connected to the respective accommodating sleeve (2, 3) in a pressure-tight and fluid-tight manner, wherein each accommodating sleeve (2, 3) has a half-pipe-shaped recess (2b, 3b) in the bottom area (2a, 3a), in such a way that both half-pipe-shaped recesses (2b, 3b) jointly form a sleeve-shaped penetration opening (4) extending perpendicularly to the longitudinal direction of the fuel rail line segments for a fastening element for fastening to the internal combustion engine, wherein adjacent to the respective recess (2b, 3b), both accommodating sleeves (2, 3) each have at least one fuel passage opening (2c, 3c), which fuel passage openings are aligned with each other.

Classes IPC  ?

• F02M 55/02 - Conduits entre pompes d'injection et injecteurs
• F02M 69/46 - Détails, parties constitutives ou accessoires non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes

Abrégé

The invention relates to a decoupled belt pulley, comprising a hub-shaped primary mass (3), which can be connected to a shaft extending along a rotational axis (2) in a rotationally fixed manner, a secondary mass (6), which can be rotated relative to the primary mass (3) and which is connected to the primary mass (3) by means of an elastic coupling (10) and which has a belt profile (7) on the outside for transferring torque between the secondary mass (6) and a belt, at least one bearing (12), which enables relative motion of the secondary mass (6) and the primary mass (3) in the circumferential direction, wherein said decoupled belt pulley should be further developed in such a way that the decoupled belt pulley has a lower weight and can be produced more economically. This is achieved in that at least the secondary mass (6) is made of plastic, and in that the bearing (12) is produced integrally with the secondary mass.

Classes IPC  ?

• F16F 15/126 - Suppression des vibrations dans les systèmes rotatifs par utilisation d'organes mobiles avec le système lui-même utilisant des organes élastiques ou des organes amortisseurs de friction, p. ex. entre un arbre en rotation et une masse giratoire montée dessus utilisant des ressorts comme organes élastiques, p. ex. des ressorts métalliques des ressorts en matière plastique, p. ex. en caoutchouc consistant en au moins un élément annulaire entourant l'axe de rotation
• F16H 55/48 - Poulies faites entièrement ou en partie de matériau non métallique, p. ex. de matière plastique

Abrégé

A device for supplying fuel to injection valves of an internal combustion engine, having a high-pressure distributor line which is in the form of a round tube and having receiving bushes for the injection valves and if appropriate having connection and fastening elements, should be cheaper to produce but at the same time suitable for high-pressure applications. This is achieved in that the high-pressure distributor line is formed by two line elements (2, 3) which are in the form of half-tubes and which are connected to one another in a pressure-tight and fluid-tight manner and which are produced by shaping or primary forming, wherein the receiving bushes (4) and if appropriate the connection and fastening elements (5) are integrally formed on the associated line element (2, 3) which is in the form of a half-tube, wherein the longitudinal edges (2a, 3a) of the two line elements (2, 3) which are in the form of half-tubes are of complementary form to one another, in such a way that the two line elements (2, 3) which are in the form of half-tubes are connected to one another in a positively locking manner.

Classes IPC  ?

• F02M 69/46 - Détails, parties constitutives ou accessoires non couverts par les groupes ou présentant un intérêt autre que celui visé par ces groupes
• F02M 55/00 - Appareils d'injection caractérisés par leurs conduits de combustible ou évents
• F02M 55/02 - Conduits entre pompes d'injection et injecteurs
• F02M 61/16 - Détails non couverts dans les groupes ou présentant un intérêt autre que celui visé par ces groupes