Fuel system, component, in particular pressure regulator or fuel distribution device, and connection, which can be used in particular for hydrogen applications

Abstract

Connection (60) for a fuel system (10) for injecting gaseous fuels, in particular hydrogen, and / or liquid fuels, in particular gasoline, into combustion chambers (11) of an internal combustion engine, wherein a first component (61) of the fuel injection system (10) and a second component (62) of the fuel injection system (10) are provided, wherein the first component (61) has a bore (63), wherein the second component (62) has a nozzle (64) which is inserted into the bore (62) of the first component (61), and wherein the second component (62) is connected to the first component (61) at its nozzle (64).It is proposed that an annular anti-rotation element (65) be provided which is connected to the nozzle (64), and that a positive locking connection (66) is formed between the anti-rotation element (65) and the first component (61) which at least substantially prevents rotation of the anti-rotation element (65) relative to the first component (61).

Description

State of the art

[0001] The invention relates to a fuel system for gaseous fuels, in particular hydrogen, and / or for liquid fuels, in particular gasoline. The invention specifically relates to the field of fuel systems for motor vehicles. The fuel system can be designed as a fuel injection system or a fuel injection system.

[0002] DE 10 2006 040 236 A1 discloses a fuel system for compressed gaseous fuel, in particular natural gas or hydrogen, for an internal combustion engine. The known fuel system comprises a common rail and a pump. Furthermore, a tank for compressed gaseous fuel, in particular natural gas or hydrogen, and an upstream pressure regulator are provided, where the pressure is reduced from the tank pressure, which can reach close to 5000 psi (34 MPa) or more, to a first reduced pressure of approximately 400 psi (2.8 MPa). Once the fuel leaves the upstream pressure regulator, it moves to a downstream pressure regulator, where the fuel is reduced to approximately 200 psi (1.4 MPa). The fuel then moves to a control regulator.An electronic control unit operates the control regulator so that the fuel is reduced at the second working pressure, in this case approximately 200 psi, to a variable control pressure set by the electronic control unit. This allows the fuel supply via common rail nozzles to be increased or decreased.

[0003] The fuel system known from DE 10 2006 040 236 A1 has the disadvantage of high manufacturing costs to enable operation with compressed hydrogen. In particular, the material from which the individual components, especially the pressure regulators, are made must be selected to meet all existing requirements. The material selection is based on the most stringent requirements, although these can vary considerably in individual parts of the fuel system.

[0004] At the same time, the manufacturing processes chosen for the components, such as casting or forging, and the joining methods used to connect individual components or parts, such as soldering, welding, or bolting, influence the selection of suitable materials. This limits the use of certain materials and the application of certain processes for manufacturing the components and parts.

[0005] Fuel injection systems for gaseous fuels also have special requirements. As a result, measures used in fuel systems for liquid fuels can be disadvantageous in applications for gaseous fuels. Furthermore, hydrogen is more volatile than natural gas. For example, a fuel injection system for hydrogen may be subject to a specification regarding the permissible amount of escaping hydrogen. This may be particularly important with regard to preventing the ignition of escaping hydrogen.

[0006] In a hydrogen fuel injection system, a pressure regulator can be used to regulate the amount and thus the pressure of hydrogen in a connected rail. Connections between the tank and the rail can be made using lines attached to screw-in fittings, which in turn are screwed into the housing. Such screw-in fittings can also be provided on the rail.

[0007] A seal must be ensured between such components, especially between a housing and a screw-in fitting. In principle, sealing can be achieved by a biting edge on one of the components, which ensures a metallic seal at the interface. An O-ring can also be used as additional protection. In principle, a seal can also be achieved using an O-ring or a flat gasket in the thread base of the screw-in fitting, especially a double fitting.

[0008] However, specific problems arise when using fuel injection systems for hydrogen. A biting edge seal, an O-ring seal, or a flat gasket seal (flat sealing ring) can only provide a seal. In practice, however, strong vibrations can occur during operation or on the vehicle, which can lead to screw connections becoming loose and possibly even coming loose. This can lead to leaks in the fuel injection system, which can cause hydrogen to escape.

[0009] In practice, repairs may require unscrewing and tightening the connection between a pressure regulator and a rail. This unscrewing and tightening may occur repeatedly. For example, this may affect the detachable connection between a double nozzle of the pressure regulator and a line. In this case, when unscrewing or screwing the line onto the double nozzle, the other screwed connection, namely between the double nozzle and the pressure regulator housing, may sooner or later also become misaligned. Loosening or undesired overtightening can lead to leaks and / or damage to sealing elements such as an O-ring or a flat gasket, which can also cause a system leak with the escape of hydrogen. A permissible axial force in an affected thread may also be exceeded.A biting edge can be pressed too hard into the sealing surface, causing leaks, or the biting edge can be loosened or released again after being pressed too hard, which also leads to leaks. Furthermore, counter-holding the fitting during tightening or loosening may be necessary for such reasons. Disclosure of the invention

[0010] The inventive connection with the features of claim 1, the inventive component with the features of claim 10, and the inventive fuel system with the features of claim 11 have the advantage of enabling improved design and functionality. Leakage prevention, in particular the escape of gaseous fuel, and anti-rotation protection can be implemented. Furthermore, sealing can be implemented for applications involving hydrogen injection. In addition, a material selection tailored to requirements is possible.

[0011] The measures set out in the subclaims enable advantageous further developments of the connection specified in claim 1, the component specified in claim 10 and the fuel system specified in claim 11.

[0012] It is advantageous for the anti-rotation element to have at least one embossed portion that interacts at least indirectly with the first component to create the positive connection. Depending on the torque to be supported, multiple embossed portions can also be provided. This allows for a reliable connection that can be manufactured cost-effectively.

[0013] It is advantageous that at least one raised portion extending toward the anti-rotation element is provided on the first component, that the raised portion has a recess on a side facing the anti-rotation element, and that the embossed portion of the anti-rotation element fits into the recess of the anti-rotation element. The height of the raised portion, viewed along a longitudinal axis of the bore, is preferably selected such that no contact with the anti-rotation element on the nozzle occurs in the assembled state. Contact then preferably only occurs upon deformation of the anti-rotation element.

[0014] It is advantageous for at least one raised portion to be designed as a dome that is connected to the first component. For example, a cylindrical dome can be firmly bonded to an outer side of the first component, in particular to a housing of the first component.

[0015] It is advantageous for at least one raised portion to be formed as a bead on the first component. The raised portion can be formed on the first component, in particular a housing of the first component.

[0016] It is advantageous that a collar is provided on the first component, which at least partially encloses the bore of the first component, that at least one flattened portion facing away from a longitudinal axis of the bore is formed on the collar, and that the anti-rotation element is formed with at least one retaining tab that rests against the flattened portion of the collar. The flattened portion can be designed, for example, as a milled recess. The positive locking can preferably be realized in any rotational position of the nozzle relative to the first component.

[0017] It is advantageous that the anti-rotation element is designed as a collar on the nozzle. This eliminates the need for an additional part. This design is particularly suitable when the positive connection is achieved by stamping.

[0018] It is advantageous that the anti-rotation element is formed from an at least substantially annular locking washer. This allows for greater design freedom. This design is particularly suitable when the locking washer forms a positive fit with a flattened portion provided on a collar of the first component.

[0019] It is advantageous that a polygon, particularly a hexagon, is formed on the socket, and that the locking washer is positively connected to the polygon. This creates a reliable connection between the locking washer and the socket, which can be manufactured cost-effectively.

[0020] It is advantageous that the inner diameter of the locking washer is smaller than the maximum outer diameter of the polygon, and that a positive fit is formed between the locking washer and the polygon at least in one overlap area. In particular, a positive fit can be formed at each edge of the polygon.

[0021] Depending on the design, at least one of the following features and / or advantages can be realized.

[0022] An advantageous positive connection can be created between the nozzle, in particular a connecting nozzle, and the first component, in particular a housing of the first component. This can be achieved regardless of the orientation of a polygon, in particular a hexagon, of the nozzle and the material combinations of the nozzle and housing. Alignment of the tool to create the positive connection is also not necessary. This can be achieved in various ways. A collar on the nozzle can be formed and / or stamped into the housing in the assembled state. An additional retaining plate can be used to create a positive connection.

[0023] The connecting piece can be screwed into the housing via a thread. The piece is preferably sealed to the outside via a biting edge in the housing. However, a sealing element, in particular an O-ring or a flat gasket, can also be used. The tightening torque is preferably introduced into the screw connection via the hexagon. Another thread on the piece is preferably provided for mounting a fuel line, which can be mounted with a union nut and preferably seals via a spherical line head at a conical interface.

[0024] An anti-twist device can be provided by a deformation or an embossing on the collar of the connecting piece. This is preferably applied when the piece is assembled using a suitable embossing tool. In one design, the housing has a bead at the corresponding point which absorbs the deformation of the collar. A dome or similar can also serve this purpose. The height of the bead or dome is preferably selected so that there is no contact with the collar of the connecting piece when assembled; this contact, however, occurs during deformation, i.e. when the embossing of the collar is absorbed. This ensures a positive fit and therefore anti-twist protection. Depending on the maximum torsional torque to be secured, several embossings can be applied distributed around the circumference. The shape of the embossing can be arbitrarily designed, e.g. using a spherical or conical tool.

[0025] In a further possible embodiment, the connecting piece can also be screwed into the housing via a thread. The piece is preferably sealed to the outside by a biting edge (or a sealing element) in the housing. The tightening torque is preferably introduced into the screw connection via the hexagon. The further thread is provided for mounting the fuel line, which is preferably mounted with a union nut and seals at the conical interface via a spherical line head. Furthermore, this embodiment features a lock washer whose inner diameter is dimensioned so that it is larger than the nominal wrench size of the hexagon. In addition, the inner diameter is smaller than the outer diameter of the hexagon to create an overlap which creates a positive fit with the piece when the lock washer is pressed onto the hexagon of the piece.The thickness of the disc is designed according to the torque to be transmitted and the gap to be bridged.

[0026] Furthermore, a housing interface can be advantageously formed. To create a positive fit with the housing, one or more milled grooves are preferably provided to allow the locking plate to be bent around them. The distance between the milled grooves is selected to be smaller than the maximum radius of the locking washer. However, other geometries could also be used to create the positive fit, into which the locking washer is, in a sense, deformed.

[0027] For example, the following assembly sequence can be implemented. The socket is screwed into the housing. The lock washer is then pressed onto the hexagon of the socket using a tool. The advantage of this is that the lock washer does not need to be installed in a straight line. The lock washer is then bent around the housing in the area of ​​the milled recesses. This creates a positive fit with the housing and thus prevents rotation. The advantage is that the socket does not necessarily have to be screwed in completely, since the lock washer can bridge a certain gap to the housing, depending on its thickness.

[0028] This allows for a beneficial sealing of the interface. The nozzle can be secured against loosening during operation and servicing. Damage to any sealing elements provided during servicing is prevented from the outset. Short description of the drawings

[0029] Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with identical reference numerals. They show: Fig. 1 a fuel system designed as a fuel injection system with a fuel distributor for injecting gaseous fuels, in particular hydrogen, into combustion chambers of an internal combustion engine in an excerpted, schematic representation according to a possible embodiment of the invention; Fig. 2 a second component for a connection between a first component and a second component of the Fig. 1 in a partial, schematic representation according to a first embodiment, showing a state before production; Fig. 3 that in Fig. 2 shows the second component in a partial, schematic sectional view, showing the state before production; Fig. 4 the connection with the Fig. 2 shown second component in an excerpted, schematic, spatial representation, wherein the second component is fastened to a first component designed as a housing and wherein a state with a designed embossing is shown; Fig. 5 which in Fig. 4 shows a connection between a first component and a second component in a partial, schematic sectional view in the manufactured state according to a modified embodiment; Fig. 6 a second component for a connection between a first component and a second component of the Fig. 1 in an excerpted, schematic representation according to a second embodiment, wherein a state before production is shown; Fig. 7 that in Fig. 6 shows the second component in a schematic sectional view; Fig. 8 an anti-twist element for the connection with the Fig. 6 shown second component in a schematic, spatial representation, showing a state before production; Fig. 9 that in Fig. 8 shows the anti-rotation element in a schematic, axial view, showing the state before manufacture; Fig. 10 is a representation of a connection between the first component and the second component according to the second embodiment to explain a basic structure, wherein the Fig. 8 the anti-rotation element is not mounted; Fig. 11 an axial view of the Fig. 10 shows a connection according to the second embodiment with an anti-rotation element arranged between the first component and the second component, wherein a state during production is shown; Fig. 12 the first component for the connection according to the second embodiment in an excerpted, schematic, spatial representation, showing a state before production; Fig. 13 that in Fig. 12 shows the first component in an axial view, showing a state before production; and Fig. 14A to 14D show several steps in the production of the connection according to the second embodiment to explain such a production, wherein in the Fig. 14A, Fig. 14B, Fig. 14C and Fig. 14D illustrates several steps S1, S2, S3 and S4 during the manufacturing process until the connection is established (step S4 in Fig. 14D). Embodiments of the invention

[0030] Fig. Figure 1 shows a fuel injection system 10 for injecting gaseous fuels, in particular hydrogen, into combustion chambers 11 of an internal combustion engine in a partial, schematic representation according to a possible embodiment of the invention. However, the fuel injection system 10 can also be used for other gaseous fuels, in particular natural gas.

[0031] In a modified embodiment, the fuel system 10 can also be designed as a fuel injection system 10 for injecting gaseous and / or liquid fuels.

[0032] The hydrogen is stored in liquid form under high pressure, for example, approximately 700 bar (70 MPa), in a tank-like fuel storage unit 12. This can be filled via a filling connection 14. Furthermore, an integrated unit 16 comprising a tank valve for filling and discharging hydrogen into and from the fuel storage unit 12 and a temperature sensor for detecting the temperature of the gaseous hydrogen coming from the fuel storage unit 12 is arranged on the fuel storage unit 12.

[0033] The gaseous hydrogen first reaches a filter 20 via a pressure line 18 and from there to a high-pressure pressure regulator (HP pressure regulator) 22. This reduces the pressure of the gaseous hydrogen to, for example, a pressure in the range of 40 bar (4 MPa). The pressure line 18 leads from the high-pressure pressure regulator 22 to a pressure sensor 24, another filter 26, and an optional temperature control device 28, finally to a low-pressure pressure regulator (LP pressure regulator) 30.

[0034] The low-pressure pressure control unit 30 comprises, in this example, two hydraulically parallel pressure control valves 32, a low-pressure pressure sensor 34, and a safety valve in the form of a shut-off valve device 36. The two pressure control valves 32 are identically constructed and, in this case, are proportional control valves. The low-pressure pressure control unit 30 further reduces the pressure in the pressure line 18 from the inlet-side pressure of approximately 40 bar (4 MPa) to a pressure of, for example, approximately 15 bar (1.5 MPa).

[0035] Downstream of the low-pressure pressure control unit 30, the pressure line 18 leads to a fuel distribution device 38, in particular a rail 38, which can be designed, for example, as an elongated tube in the manner of a typical fuel rail, as is known from gasoline and diesel fuel systems. The gas pressure prevailing in the fuel distribution device 38 is detected by a pressure sensor 40.

[0036] Connected to the fuel distribution device 38 are several injectors 42, which inject the gaseous hydrogen directly into the combustion chambers 11 of the internal combustion engine. The gaseous hydrogen is mixed with atmospheric oxygen in the combustion chambers 11, and this mixture is ignited by a respective ignition device 46. Typically, the internal combustion engine is a 2-stroke or 4-stroke piston internal combustion engine of a largely conventional design. For example, such an internal combustion engine is used to power a motor vehicle. However, it can also be used stationary, for example, to drive a generator for power generation.

[0037] The fuel supply system 10 and its components are controlled by an electronic control and regulating device 48, which has one or more corresponding microprocessors, a memory for program code, etc. The control and regulating device 48 receives signals from, among others, the temperature sensor (installed in the integrated unit 16), the pressure sensor 24, the pressure sensor 34, the pressure sensor 40, etc. The control and regulating device 48 controls various components of the fuel supply system 10, including the low-pressure pressure regulating device 30, the safety valve 36, and the ignition devices 46. Furthermore, a control device 50 is also controlled by the control and regulating device 48, which in turn specifically controls or regulates the operation of the fuel storage device 12.

[0038] Fig. 2 to 5 show a connection 60 between a first component 61 and a second component 62 of the Fig. 1 in an excerpted, schematic representation according to a first embodiment of the invention.

[0039] The connection 60 can be realized at several points 59 in the fuel system 10.

[0040] Fig. 2 shows the second component 62 for the connection 60 in an excerpted, schematic representation according to the first embodiment, wherein a state before production is shown. Fig. 3 shows that in Fig. 2 shows a partial, schematic sectional view of the second component 62, showing the state before production. Fig. 4 the connection with the Fig. 2 in an excerpted, schematic, spatial representation, wherein the second component 62 is fastened to a first component 61 designed as a housing.

[0041] The first component 61 has a bore 63. Furthermore, the second component 62 has a socket 64 that is inserted into the bore 63 of the first component 61. Furthermore, an annular anti-rotation element 65 is provided, which is connected to the socket 64. A positive connection 66 is formed between the anti-rotation element 65 and the first component 61, which prevents rotation of the anti-rotation element 65 about a longitudinal axis 67 of the bore 63 relative to the first component 61.

[0042] The nozzle 64 of the first component 61 can be connected to the second component via a threaded connection 68. During operation, hydrogen can be guided through the nozzle 64 into the first component 61 via an axial through-bore 69. A biting edge 74 of the nozzle 64 ensures sealing with the first component 61. Sealing at the additional nozzle 95 can be achieved via a ball-cone seal 77 or the like.

[0043] At least one raised part 71 extending towards the anti-rotation element 65 is provided on the first component 61. The raised part 71 has a recess 73 ( Fig. 5). In the manufactured state, the embossing 70 of the anti-rotation element 65 fits into the recess 73 of the anti-rotation element 65.

[0044] As in Fig. As shown in Figure 4, the raised part 71 is formed as a dome 75 in one possible embodiment. The dome 75 is connected to the first component 61. Preferably, several domes 75 are provided. A recess 73 can be provided on each dome 75.

[0045] Fig. 5 shows the Fig. 4 shows the connection 60 between a first component 61 and a second component 62 in a partial, schematic sectional view in the manufactured state according to a modified embodiment. In this embodiment, the raised part 71 is formed as a bead 76 formed on the first component 61. In this case, a plurality of recesses 73 can be provided on the bead 76, into each of which an embossed portion 70 can engage.

[0046] Thus, one or more embossments 70 can be formed on the anti-rotation element 65, which cooperate to form the positive connection 66 with the first component 61. 6. In these embodiments, the anti-rotation element 65 is preferably formed as a collar 80 formed on the connecting piece 64.

[0047] Fig. 6 to 14 show a connection 60 according to a second embodiment.

[0048] Fig. Figure 6 shows the second component 62 for the connection 60 in a partial, schematic representation according to a second embodiment, showing a state before production. Furthermore, Fig. 7 that in Fig. 6 shows the second component 62 in a schematic sectional view. Fig. 8 an anti-rotation element 65 for the connection 60 with the Fig. 6 shown second component 62 in a schematic, spatial representation, wherein a state before production is shown. Fig. 9 shows that in Fig. 8 shown anti-rotation element 65 in a schematic, axial view, showing the state before production. Fig. 10 shows a representation of a connection 60 between the first component 61 and the second component 62 according to the second embodiment to explain a basic structure, wherein the Fig. 8, the anti-rotation element 65 is not mounted. A gap 78 is left between the connecting piece 64 and the first component 61, in which the locking washer 84 can be mounted.

[0049] Fig. 11 shows an axial view of the Fig. 10 shown connection 60 according to the second embodiment with an anti-rotation element 65 arranged between the first component 61 and the second component 62, wherein a state during production is shown. Fig. 12 shows the first component 61 for the connection 60 according to the second embodiment in an excerpted, schematic, spatial representation, wherein a state before production is shown. Fig. 13 shows that in Fig. 12 shows the first component 61 in an axial view, showing a state before production.

[0050] Fig. 14A to 14D show several steps S1 to S4 in the production of the connection according to the second embodiment to explain such a production, wherein in the Fig. 14A, Fig. 14B, Fig. 14C and Fig. 14D shows several steps S1, S2, S3 and S4 during the manufacturing process until the connection is established. With step S4, the connection is established, as shown in Fig. 14D is shown.

[0051] Fig. 14A to 14D thus correspond to a flow chart with steps S1 to S4 for explaining a production of the connection 60 according to the second embodiment, wherein for illustration purposes the steps S1 to S4 are shown as examples during the production up to the established connection (step S4).

[0052] In this embodiment, the anti-rotation element 65 is designed as an annular locking washer 84. The locking washer 84 is formed from a flat state, as shown in Fig. 8 and Fig. 9 is deformed.

[0053] In this exemplary embodiment, a collar 85 is provided on the first component 61. The collar 85 completely encloses the bore 63 of the first component 61 in this exemplary embodiment. Flattened portions 86, 87 are formed on the collar 85, facing away from the longitudinal axis 67 of the bore 63. The flattened portions 86, 87 can be formed, for example, by milling on the collar 85. A distance 82 between the flattened portions 86, 87 is smaller than an outer diameter 83 of the retaining washer 84.

[0054] In the assembled state, retaining tabs 88, 89 are formed on the locking washer 84. The retaining tabs 88, 89 rest against the flats 86, 87 of the collar 85, thus forming a positive connection 66.

[0055] Furthermore, a hexagon 90 is formed on the socket 64. During production, the lock washer 84 is positively connected to the hexagon 90. For this purpose, an inner diameter 91 of the lock washer 84 is smaller than a maximum outer diameter 91A of the hexagon 90. When the lock washer 84 is pressed onto the hexagon 90, a positive connection 93 is formed between the lock washer 84 and the hexagon 90 at several overlap areas 92. Gaps 94 between the hexagon 90 and the lock washer 84 can remain free between the overlap areas 92.

[0056] Thus, the locking washer 84, on the one hand, realizes a positive connection 66 to the first component 61. Furthermore, in the second embodiment, the locking washer 84 also realizes a positive connection 93 to the hexagon 90 of the nozzle 64.

[0057] The second component 62 can have a further nozzle 95, to which a further threaded connection 96, for example, with a fuel line, can be realized. When screwing on and off such a fuel line, torques can occur that are capable of screwing the nozzle 64 further into the first component 61 or out of it. However, such torques can be absorbed by the positive connection 66 mediated by the anti-rotation element 65, so that rotation of the nozzle 64 relative to the first component 61 is reliably prevented.

[0058] The Fig. In the assembly sequence illustrated in Figures 14A to 14D, in step S1, the locking washer 84 can be guided onto the hexagon 90 of the second component 62 using a two-part tool 98 and pressed on in step S2. In step S3, the locking washer 84 can then be bent over so that the retaining tabs 88, 89 are formed. For this purpose, a part 99 of the tool 98 is adjusted along the longitudinal axis 67 relative to a part 99' of the tool 98. The positive connection 66 to the first component 61 is then established. Step S4 shows the finished thread locking by means of a positive connection 66 on the first component 61 and a positive connection 93 on the hexagon 90 of the nozzle 64. The locking washer 84 can be designed as a locking plate.

[0059] The connection 60 can be realized in different components 100 of the fuel injection system 10. The connection 60 can, as shown by way of example in Fig.1, in particular at points 59. Several devices of the fuel injection system 10 are suitable as component 100. The connection 60 is particularly preferably used on a pressure regulator 22, 30. The connection 60 can be provided on the connection piece 54 and / or on the outlet-side connection piece 56. The connection 60 can also be provided in particular on the integrated unit 16, on the filter 20, on the filter 26, if this is an individual element, and on the temperature control device 28. The connection 60 can particularly preferably be provided additionally or alternatively on the fuel distribution device 38, in particular rail 38.

[0060] The invention is not limited to the described embodiments. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2006 040 236 A1 [0002, 0003]

Claims

[1] Connection (60) for a fuel system (10) which serves for injecting gaseous fuels, in particular hydrogen, and / or liquid fuels, in particular gasoline, into combustion chambers (11) of an internal combustion engine, wherein a first component (61) of the fuel injection system (10) and a second component (62) of the fuel injection system (10) are provided, wherein the first component (61) has a bore (63), wherein the second component (62) has a nozzle (64) which is inserted into the bore (62) of the first component (61), and wherein the second component (62) is connected to the first component (61) at its nozzle (64), characterized bythat an annular anti-rotation element (65) is provided which is connected to the nozzle (64), and that a positive connection (66) is formed between the anti-rotation element (65) and the first component (61), which at least substantially prevents rotation of the anti-rotation element (65) relative to the first component (61). [2] A compound according to claim 1, characterized by that at least one embossing (70) is formed on the anti-rotation element (65), which cooperates at least indirectly with the first component (61) to form the positive connection (66). [3] Connection according to claim 2, characterized bythat at least one raised part (71) extending towards the anti-rotation element (65) is provided on the first component (61), that the raised part (71) has a recess (73) on a side (72) facing the anti-rotation element (65), and that the embossing (70) of the anti-rotation element (65) fits into the recess (73) of the anti-rotation element (65). [4] A compound according to any one of claims 3, characterized by , a) that at least one raised part (71) is designed as a dome (75) which is connected to the first component (61) and / or b) that at least one raised part (71) is designed as a bead (76) formed on the first component (61). [5] A compound according to claim 1, characterized bythat a collar (85) is provided on the first component (61), which at least partially encloses the bore (63) of the first component (61), that at least one flattened portion (86, 87) facing away from a longitudinal axis (67) of the bore (63) is formed on the collar (85), and that the anti-twist element (65) is formed with at least one retaining tab (88, 89) which bears against the flattened portion (86, 87) of the collar (85). [6] A compound according to any one of claims 1 to 5, characterized by that the anti-rotation element (65) is designed as a collar (80) formed on the nozzle (64). [7] A compound according to any one of claims 1 to 5, characterized by that the anti-rotation element (65) is formed from an at least substantially annular locking disc (84). [8] Connection according to claim 7, characterized bythat a polygon (90), in particular a hexagon, is formed on the nozzle (64) and that the locking washer (84) is positively connected to the polygon (90). [9] Connection according to claim 8, characterized by that an inner diameter (91) of the locking washer (84) is smaller than a maximum outer diameter (91A) of the polygon (90) and that a positive connection (93) is formed between the locking washer (84) and the polygon (90) in at least one overlap region (92). [10] Component (100), in particular pressure regulator (22, 30) or fuel distribution device (38), of a fuel system (10) which serves for injecting gaseous fuels, in particular hydrogen, and / or for injecting liquid fuels, in particular gasoline, into combustion chambers (11) of an internal combustion engine, wherein a first component (61) with a bore (63) and a second component (62) with a nozzle (64) are provided and wherein the second component (62) is connected to the first component (61) at its nozzle (64) by a connection (60) according to one of claims 1 to 9. [11] Fuel system (10) which serves for injecting gaseous fuels, in particular hydrogen, or for injecting liquid fuels into combustion chambers (11) of an internal combustion engine, wherein at least one component (100) according to claim 10 is provided.

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