Arrangement with a cylinder head cover and an adapter which serves to connect a fuel, in particular hydrogen, carrying component to an injector

Abstract

Arrangement (1) with a cylinder head cover (2) and at least one adapter (3) which serves to connect a component (4) carrying fuel, in particular hydrogen, in particular a fuel distribution rail (4), to an injector (5), wherein the cylinder head cover (2) has a cover chamber (7) which the cylinder head cover (2) delimits from an environment (8) in the assembled state. It is proposed that a wall (15) of the cylinder head cover (2) has an opening (16) adapted to the adapter (3), through which the adapter (3) extends in the assembled state, and that at least one seal (17) is provided which seals the cover chamber (7) from the environment (8) at the opening (16) in the assembled state.

Description

State of the art

[0001] The invention relates to an assembly comprising a cylinder head cover and at least one adapter serving to connect a fuel-carrying component to an injector. Specifically, the invention relates to an assembly comprising a cylinder head cover and at least one adapter serving to connect a fuel rail to an injector. The invention is particularly suitable for hydrogen applications, or for hydrogen as a fuel.

[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 (injectors) to be increased or decreased.

[0003] When installing a fuel system, as known from DE 10 2006 040 236 A1, on an internal combustion engine, the common rail can be installed on the side or on top of the cylinder head, particularly for hydrogen applications. The injectors can be mounted on the side or top of the cylinder head and protrude into the combustion chamber. When installed, the injectors then protrude through a cylinder head cover mounted on the cylinder head. Disclosure of the invention

[0004] The arrangement according to the invention with the features of claim 1 has the advantage of enabling an improved design and functionality. In particular, a short line length for a connecting line (fuel line) provided between the adapter and an injector can be realized.

[0005] The measures set out in the subclaims enable advantageous further developments of the arrangement specified in claim 1.

[0006] The arrangement is particularly preferably used for hydrogen applications or hydrogen as a fuel.

[0007] The cylinder head cover can be mounted on a cylinder head when assembled. The cover space can then be enclosed between the cylinder head cover and the top surface of the cylinder head.

[0008] Depending on the design, one or more seals can be provided on an adapter or in relation to an adapter or an opening in a wall of the cylinder head cover. Depending on the number of injectors, several adapters and a correspondingly multiplied number of seals can be provided. However, it is also conceivable that, in the case of multiple adapters, different sealing concepts can be provided for the individual adapters.

[0009] It is advantageous that at least one injector is provided which is connected to the adapter via a connecting line, and that the connecting line runs entirely within the hood compartment. A connection to the component, in particular a fuel distribution rail, is possible via the adapter. The fuel distribution rail can, for example, be connected in a suitable manner to the cylinder head or the cylinder head cover. The arrangement of the fuel distribution rail and the cylinder head is preferably implemented such that the adapter, which is preferably connected directly to the fuel distribution rail, extends through the cylinder head cover into the hood compartment. The connecting line, which serves as the fuel line between the adapter and the associated injector, can then be designed to be relatively short. In particular, a line section that would otherwise be required for the route from the hood compartment through the wall of the cylinder head cover is eliminated.

[0010] It is advantageous that at least one component, in particular a fuel distribution rail, is provided which carries fuel, in particular hydrogen, and that the adapter is connected directly to a base body of the fuel distribution rail, in particular is screwed directly into a bore in a base body of the fuel distribution rail. This makes it possible to realize an advantageous embodiment in which, in particular, the number of components required is reduced and, at the same time, a short line length can be achieved. By reducing the number of required connection points, in particular screw connections, the escape of hydrogen can be reduced or avoided. Improved assembly and a reduction in the effort required for any leak test that may be required can also be achieved.

[0011] For example, a shorter line length can achieve an even distribution and / or damping of pulsations in the fuel system, in particular the hydrogen system.

[0012] It is advantageous that at least one seal is arranged between the cylinder head cover and an outer side of the base body of the fuel rail, with the seal circumferentially enclosing the adapter. This allows for an advantageous arrangement of one or more seals outside the cover space.

[0013] It is advantageous that the seal on the outside of the base body of the fuel distribution rail creates a seal. This prevents fuel, particularly hydrogen, from escaping from the base body, particularly the adapter inserted, particularly screwed, into the base body. Furthermore, if necessary, a seal can be achieved for the cover space at the opening in the wall of the cylinder head cover. Thus, if necessary, these two seals can also be achieved with a single seal.

[0014] It is advantageous for the adapter to extend along a longitudinal axis through the seal, and for an at least substantially axial seal to be realized between the outer side of the fuel rail's base body and the seal. In this case, the seal can be subjected to axial pressure, for example, by one or more screw connections. However, other options for applying axial pressure to the seal are also conceivable.

[0015] It is advantageous that the seal at the opening in the cylinder head cover wall creates a seal. This allows the cover space to be sealed from the environment.

[0016] It is advantageous that the adapter extends along a longitudinal axis through the seal and the opening in the cylinder head cover wall, and that an at least substantially axial seal is created between the cylinder head cover wall and the seal with respect to the longitudinal axis. This allows the seal to be subjected to axial pressure, for example, by one or more screw connections to create the seal.

[0017] It is advantageous that the adapter extends through the seal along a longitudinal axis, and that an at least substantially axial seal is formed between a collar of the adapter and the seal with respect to the longitudinal axis. This allows for advantageous support of the seal on the adapter. For example, axial loading of this seal can be achieved by one or more screw connections.

[0018] It is advantageous that the adapter extends along a longitudinal axis through the seal, that a support element is fastened to the adapter or the cylinder head cover, which support element circumferentially encloses the adapter, and that an at least substantially axial seal is realized between the support element and the seal with respect to the longitudinal axis. Thus, with respect to the respective application, an additional element can be provided that can ensure advantageous sealing. In particular, the support element can be designed such that an advantageous contact or sealing surface is achieved between the support element and the seal. In this case, a specific support element can serve to support one or more seals. For this purpose, further adaptation to the respective application is easily possible.

[0019] It is advantageous that the adapter extends along a longitudinal axis through the seal, and that an at least substantially radial seal is realized between a circumferential outer side of the adapter and the seal with respect to the longitudinal axis. This allows, for example, an axial seal to be combined with a radial seal. This can enable a particularly compact design. This can potentially allow the component, in particular the fuel rail, to be arranged particularly close to the cylinder head cover.

[0020] It is advantageous that the adapter extends along a longitudinal axis through the seal and a support element, and that an at least substantially radial seal is realized between a circumferential outer side of the adapter and the seal with respect to the longitudinal axis. This allows for a radial seal with respect to the support element. The geometry of the support element and the geometry of the seal can thereby optionally result in a radial loading of the seal. A combination of a radial seal with an axial seal can be realized.

[0021] It is advantageous to have a seal between the outer peripheral surface of the adapter and the support element. This can allow for a certain axial assembly tolerance if necessary. The geometric dimensioning relative to the support element can then be used to specify a sealing effect or a sealing load, regardless of the exact axial position of the adapter. Furthermore, if an additional axial seal is implemented, this axial seal can be adjusted independently of the radial seal.

[0022] It is advantageous to have a seal between the cylinder head cover wall and the support element. This allows a suitable support element to be selected for the specific application.

[0023] It is advantageous to provide a spring element that is at least indirectly supported on the adapter, and to apply pressure to the support element and the seal against the wall of the cylinder head cover. This allows a certain degree of pressure to be applied to the seal, regardless of the axial position of the adapter.

[0024] It is advantageous that at least one seal is designed as a sealing element, in particular as an annular sealing element. This allows for an advantageous design of the seal, which in particular enables simple assembly.

[0025] It is advantageous for at least one seal to have a rectangular, particularly square, profile. This advantageously allows for axial, radial, or both axial and radial sealing. Furthermore, twisting of the sealing element in the circumferential direction can be prevented.

[0026] It is advantageous for at least one seal to be designed as a cup-shaped seal, and for a projection that is annular in shape relative to a longitudinal axis of the adapter to be formed on a wall of the cylinder head cover. This allows for a certain degree of tolerance compensation. If necessary, the geometric design of the cup-shaped seal can be used to prestress the cup-shaped seal during assembly, which creates the seals.

[0027] It is advantageous that an annular end piece of the seal near the cylinder head cover encloses the projection from the radial outside with respect to the longitudinal axis or rests against the projection from the radial inside, and that a seal is realized between the annular end piece of the seal near the cylinder head cover and the projection. It is advantageous that an annular end piece of the seal far from the cylinder head cover circumferentially encloses a circumferential outer side of the adapter, and that a seal is realized between the annular end piece far from the cylinder head cover and the circumferential outer side. By means of the geometric design of the end pieces of the seals, in particular their respective diameters, a preload can be specified if necessary, so that the desired sealing effect is achieved.

[0028] Depending on the design, one or more of the following features and advantages can be realized.

[0029] By designing a push-through adapter, a significantly shorter line can be used compared to a standard design, which would require a significantly longer line routing. Shorter lines can offer significant advantages for system design, such as even distribution and dampening of pulsations in the H2 system. H2 is short for hydrogen. However, similar advantages can also be realized for fuels other than hydrogen.

[0030] The fuel distribution rail is preferably designed as a rail. The refinements and advantages specified for the rail can also be implemented in a corresponding manner for fuel distribution rails with different designs.

[0031] The rail for an H2 combustion engine can be designed as follows: The rail is bolted directly to the wall of a cylinder head cover. The adapter is inserted through a bore. To ensure a seal against the medium inside the cylinder head cover, a seal is inserted around the adapter. This seal can be designed as an axial or radial seal. Other types of sealing elements are also possible.

[0032] The line connection is then advantageously located within the cylinder head cover. The sealing element can only be visible after the rail has been removed. The sealing element can be specifically protected by the rail, particularly against mechanical damage. Short description of the drawings

[0033] 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 an arrangement with a component of a fuel injection system designed as a fuel distribution rail and a cylinder head with a cylinder head cover provided on the cylinder head and an injector which serves in particular for injecting hydrogen into the combustion chambers of an internal combustion engine, in an excerpted, schematic representation according to a possible embodiment of the invention; Fig. 2 a detail of the Fig. 1 illustrated arrangement in a schematic sectional view according to a first embodiment; Fig. 3 a detail of the Fig. 1 shown arrangement in a schematic sectional view according to a second embodiment; Fig. 4 a detail of the Fig. 1 shown arrangement in a schematic sectional view according to a third embodiment; Fig. 5 a detail of the Fig. 1 shown arrangement in a schematic sectional view according to a fourth embodiment; Fig. 6 a detail of the Fig. 1 shown arrangement in a schematic sectional view according to a fifth embodiment and Fig. 7 a detail of the Fig. 1 shown arrangement in a schematic sectional view according to a sixth embodiment. Embodiments of the invention

[0034] Fig. 1 shows, in a highly simplified and schematic representation, an arrangement 1 with a cylinder head cover 2 and at least one adapter 3, which serves to connect a fuel-carrying component 4, in particular a fuel distribution rail 4, to an injector 5. Hydrogen, in particular, can be used as the fuel, with the component 4 and the adapter 3 being particularly suitable for hydrogen. The cylinder head cover 2 has a cover space 7, which the cylinder head cover 2 delimits from an environment 8 in the assembled state. In this exemplary embodiment, the fuel distribution rail 4 is designed as a rail 4.

[0035] The component 4, in particular the fuel distribution rail 4, and the adapter 3 can be elements of a fuel system 9. The adapter 3 can realize a connection 10 to the fuel distribution rail 3. The adapter 3 has an axial through-bore 11 ( Fig. 2). A line 18 can be mounted on the connection 10. In the case of hydrogen as the fuel, the fuel system 9 is designed as a fuel injection insert 9. In a modified embodiment, such a fuel system 9 can also be designed as a fuel system 9 for blowing in or injecting other gaseous and / or liquid fuels.

[0036] In the following, the design of the order 1 is also explained with reference to Fig. 2 further described.

[0037] Fig. 2 shows a detail of the Fig. 1 in a schematic sectional view according to a first exemplary embodiment. The cylinder head cover 2 has a wall 15. Furthermore, the wall 15 of the cylinder head cover 2 has an opening 16 for the adapter 3, which opening is adapted to the adapter 3. If further connections corresponding to the connection 10 are provided, then further openings corresponding to the opening 16 can also be provided in the wall 15 in a corresponding manner.

[0038] In the assembled state, the adapter 3 extends through the opening 16 in the wall 15. At least one seal 17 is provided, which, in the assembled state, seals the hood chamber 7 from the environment 8 at the opening 16. If further openings are provided in the wall 15, then additional seals can be provided accordingly. Furthermore, several seals 17 can also be provided at the opening 16 or at another opening that may be provided.

[0039] The injector 5 is assigned to the adapter 3 or the connection 10. The injector 5 is in the assembled state via the Fig. 1, the connecting line 18 schematically shown is connected to the adapter 3. The connecting line 18 can then run entirely within the hood space 7.

[0040] The fuel-carrying component 4, in particular hydrogen, has a base body 20. In this exemplary embodiment, the component 4 is designed as a fuel distributor bar 4, so that the base body 20 is preferably an at least substantially tubular and / or elongated base body 20. The axial through-bore 11 of the adapter opens via a radial bore 12 of the base body 20 into a fuel chamber 13 inside the base body 20.

[0041] The adapter 3 is connected directly to the base body 20 of the fuel distribution rail 4 at the connection 10. In a preferred embodiment, the adapter 3 is screwed directly into a bore 21 formed as a threaded bore 21 in the base body 20 of the fuel distribution rail 4. Additional adapters can be attached to the base body 20 in a similar manner.

[0042] In this exemplary embodiment, the seal 17 is arranged between the cylinder head cover 2 and an outer side 22 of the base body 20 of the fuel distribution rail 4. In the assembled state, the seal 17 circumferentially encloses the adapter 3. In this exemplary embodiment, there is contact at one contact surface between the seal 17 and the wall 15 of the cylinder head cover 2. There is further contact between the seal 17 and the adapter 3 at a further contact surface. In the assembled state and if the seal 17 is optionally subjected to a suitable axial preload, sealing points are created at these contact surfaces, which enable a seal to prevent the escape of hydrogen. Due to the resulting sealing points, the seal 17 in this exemplary embodiment realizes a seal 17A against the escape of hydrogen.

[0043] In this exemplary embodiment, the seal 17 at the opening 16 of the wall 15 of the cylinder head cover 2 forms the seal 17A. The adapter 3 extends along a longitudinal axis 19 through the seal 17 and the opening 16 in the wall 15 of the cylinder head cover 2. As a result, an at least substantially axial seal 17A is formed between the wall 15 of the cylinder head cover 2 and the seal 17 with respect to the longitudinal axis 19. This seal is located at the aforementioned contact surface.

[0044] Furthermore, since the adapter 3 extends along the longitudinal axis 19 through the seal 17, an at least substantially axial seal 17B is additionally realized between a collar 25 of the adapter 3 and the seal 17 with respect to the longitudinal axis 19. This seal is located at the aforementioned further contact surface.

[0045] In one possible embodiment, the component 4 or, in this embodiment, the fuel distribution rail 4 can be connected to the cylinder head cover 2. This is shown in Fig. 1 is schematically illustrated by a connecting element 23.

[0046] Fig. 3 shows a detail of the Fig. 1 in a schematic sectional view according to a second exemplary embodiment. In this exemplary embodiment, the seal 17 on the outer side 22 of the base body 20 of the fuel distribution rail 4 forms a seal 17C. In this case, a recess 28 into which the seal 17 is inserted can be provided on the base body 20. The recess 28 can enable improved contact of the seal 17 with the base body 20. In particular, the contact surface between the seal 17 and the base body 20 can then lie in one plane. In addition, the contact surface on the base body 20 can be formed with a higher surface quality, which can improve the seal 17C. The seal 17C is implemented as an axial seal 17C.

[0047] The adapter 3 extends along the longitudinal axis 19 through the seal 17. Furthermore, the adapter 3 extends along the longitudinal axis 19 through the opening 16 of the wall 15. Furthermore, in this exemplary embodiment, a seal 17A is realized between the seal 17 and the wall 15. An axial preload can be realized by supporting the seal 17 on the base body 20.

[0048] In contrast to the Fig. 2 is shown in the configuration shown in Fig. In the embodiment shown in Figure 3, a radial seal 17D is realized between the seal 17 and the adapter 3. Here, the radial seal 17D is realized between a circumferential outer side 26 of the adapter 3 and the seal 17, wherein the preload is radial with respect to the longitudinal axis 19.

[0049] Fig. 4 shows a detail of the Fig. 1 in a schematic sectional view according to a third exemplary embodiment. The adapter 3 extends along the longitudinal axis 19 through the seal 17 and the opening 16 in the wall 15. Furthermore, a support element 30 is attached to the adapter 3 and circumferentially encloses the adapter 3.

[0050] Furthermore, a spring element 35 supported on the adapter 3 is provided. The spring element 35 is supported at least indirectly on the adapter 3. In this exemplary embodiment, the spring element 35 is supported on an annular collar 36 of the adapter 3.

[0051] The spring element 35 is preloaded. The spring element 35 thereby forces the support element 30 and the seal 17 against the wall 15 of the cylinder head cover 2. Thus, a seal 17A is formed between the seal 17 and the wall 15, on the one hand, and a seal 17E is formed between the seal 17 and the support element, on the other hand. The seal 17A is an axial seal 17A with respect to the longitudinal axis 19. The seal 17E is also an axial seal 17A with respect to the longitudinal axis 19.

[0052] Since the adapter 3 extends along its longitudinal axis 19 through the seal 17 and the support element 30 and at the same time rests against the seal 17 on its circumferential outer side 26, an at least substantially radial seal 17D is realized between the circumferential outer side 26 of the adapter 3 and the seal 17 with respect to the longitudinal axis 19 by means of a suitable radial prestress of the seal 17.

[0053] Fig. 5 shows a detail of the Fig. 1 in a schematic sectional view according to a fourth embodiment. In this embodiment, two seals 17 are provided, which are also referred to as seals 17' and 17" for easier differentiation.

[0054] A support element 30 is also provided. The support element 30 can be attached to the wall 15 of the cylinder head cover 2, as illustrated by schematically shown connecting elements 37, 38.

[0055] The seal 17' is located between a circumferential outer side 26 of the adapter 3 and the support element 30. Thus, a seal 17D can be realized between the seal 17' and the circumferential outer side 26. Furthermore, a seal 17F can be realized between the seal 17' and the support element 30. The seals 17D, 17F are radial seals 17D, 17F.

[0056] The seal 17" is located between the wall 15 of the cylinder head cover 2 and the support element 3. Thus, a seal 17E can be realized between the seal 17" and the support element 30. Furthermore, a seal 17A can be realized between the seal 17" and the wall 15. The seals 17A, 17E are axial seals 17A, 17E.

[0057] In the case of the Fig. 2 to 5, each of the seals 17 is designed as a sealing element 17. Here, the sealing elements 17 are each designed as annular sealing elements 17. In one possible embodiment, one or more provided seals 17, 17', 17" are designed with a rectangular, in particular square, profile 40, as can be seen from Fig. 2, Fig. 4 and Fig. 5 is illustrated.

[0058] Fig. 6 shows a detail of the Fig. 1 in a schematic sectional view according to a fifth embodiment. Furthermore, Fig. 7 a detail of the Fig. 1 illustrated arrangement 1 in a schematic sectional view according to a sixth embodiment.

[0059] In these embodiments, a seal 17 is provided, which is designed as a cup-shaped seal 41. Furthermore, a projection 44 is formed on the wall 15 of the cylinder head cover 2, which is annularly configured with respect to the longitudinal axis 19 of the adapter 3.

[0060] In one possible embodiment, an annular end piece 42 of the seal 41, close to the cylinder head cover, encloses the projection 44 radially outwardly with respect to the longitudinal axis 19, as shown in Fig. 6 is shown.

[0061] In a modified embodiment, the end piece 42 surrounds the projection 44 from the radial inside, as shown in Fig.7 is shown.

[0062] In both embodiments, the end piece rests against the projection 44. In this case, an inward or outward preload is provided, with which the end piece is urged against the projection 44. This creates a seal 17G between the annular end piece 42 of the seal 41, near the cylinder head cover, and the projection 44. The seal 17G is a radial seal 17G.

[0063] Furthermore, in both embodiments, an annular end piece 43 of the seal 17 is provided, which is remote from the cylinder head cover and circumferentially encloses a circumferential outer side 26 of the adapter 3. This is implemented in a comparable manner in both embodiments. In particular, a radially inward preload of the annular end piece 43 can be specified. This creates a seal 17H between the annular end piece 43 remote from the cylinder head cover and the circumferential outer side 26. The seal 17H is a radial seal 17H.

[0064] 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] Arrangement (1) with a cylinder head cover (2) and at least one adapter (3) which serves to connect a fuel, in particular hydrogen, carrying component (4), in particular a fuel distributor rail (4), to an injector (5), wherein the cylinder head cover (2) has a cover space (7) which the cylinder head cover (2) delimits from an environment (8) in the assembled state, characterized by that a wall (15) of the cylinder head cover (2) has an opening (16) adapted to the adapter (3), through which the adapter (3) extends in the mounted state, and that at least one seal (17) is provided which seals the cover space (7) in the mounted state at the opening (16) from the environment (8). [2] Arrangement according to claim 1, characterized bythat at least one injector (5) is provided which is connected to the adapter (3) via a connecting line (18), and that the connecting line (18) runs completely within the hood space (7). [3] Arrangement according to claim 1 or 2, characterized by that at least one fuel, in particular hydrogen, carrying component (4), in particular a fuel distribution bar, is provided, and that the adapter (3) is directly connected to a base body (20) of the fuel distribution bar (4), in particular is screwed directly into a bore (21) of a base body (20) of the fuel distribution bar (4). [4] Arrangement according to claim 3, characterized by that at least one seal (17) is arranged between the cylinder head cover (2) and an outer side (22) of the base body (20) of the fuel distributor rail (4), wherein the seal (17) circumferentially encloses the adapter (3). [5] Arrangement according to claim 4, characterized by , a) that the seal (17) on the outer side (22) of the base body (20) of the fuel distributor rail (4) forms a seal (17C) and / or b) that the adapter (3) extends along a longitudinal axis (19) through the seal (17) and that an at least substantially axial seal (17C) is realized between the outer side (22) of the base body (20) of the fuel distributor rail (4) and the seal (17). [6] Arrangement according to one of claims 1 to 5, characterized by , a) that the seal (17) at the opening (16) of the wall (15) of the cylinder head cover (2) forms a seal (17A) and / or b) that the adapter (3) extends along a longitudinal axis (19) through the seal (17) and the opening (16) in the wall (15) of the cylinder head cover (2) and that an at least substantially axial seal (17A) is realized between the wall (15) of the cylinder head cover (2) and the seal (17) with respect to the longitudinal axis (19) and / or c) that the adapter (3) extends along a longitudinal axis (19) through the seal (17) and that an at least substantially axial seal (17B) is realized between a collar (25) of the adapter (3) and the seal (17) with respect to the longitudinal axis (19) and / or d) that the adapter (3) extends along a longitudinal axis (19) through the seal (17), that a support element (30) is fastened to the adapter (3) or the cylinder head cover (2) and circumferentially encloses the adapter (3), and that an at least substantially axial seal (17E) is realized between the support element (30) and the seal (17) with respect to the longitudinal axis (19). [7] Arrangement according to one of claims 1 to 6, characterized by that the adapter (3) extends along a longitudinal axis (19) through the seal (17) and that an at least substantially radial seal (17D) is realized between a circumferential outer side (26) of the adapter (3) and the seal (17) with respect to the longitudinal axis (19). [8] Arrangement according to one of claims 1 to 7, characterized bythat the adapter (3) extends along a longitudinal axis (19) through the seal (17) and a support element (30) and that an at least substantially radial seal (17D) is realized between a circumferential outer side (26) of the adapter (3) and the seal (17) with respect to the longitudinal axis (19). [9] Arrangement according to claim 8, characterized by , a) that a seal (17) is located between a peripheral outer side (26) of the adapter (3) and the support element (30) and / or b) that a seal (17) is located between the wall (15) of the cylinder head cover (2) and the support element (3). [10] Arrangement according to claim 8 or 9, characterized by that a spring element (35) is provided which is supported at least indirectly on the adapter (3), and that the spring element (35) acts on the support element (30) and the seal (17) against the wall (15) of the cylinder head cover (2). [11] Arrangement according to one of claims 1 to 10, characterized by , a) that at least one seal (17) is designed as a sealing element (17), in particular as an annular sealing element (17), and / or b) that at least one seal (17) has a rectangular, in particular square, profile (40). [12] Arrangement according to one of claims 1 to 11, characterized by , a) that at least one seal (17) is designed as a pot-shaped seal (41), that a projection (44) which is annular in shape with respect to a longitudinal axis (19) of the adapter (3) is formed on a wall (15) of the cylinder head cover (2), and b1) that an annular end piece (42) of the seal (41) near the cylinder head cover surrounds the projection (44) from the outside relative to the longitudinal axis (19) radially or bears against the projection (44) from the inside radially and that a seal (17G) is realized between the annular end piece (42) of the seal near the cylinder head cover and the projection (44) and / or b2) that an annular end piece (43) of the seal (17) remote from the cylinder head cover circumferentially encloses a circumferential outer side (26) of the adapter (3) and that a seal (17H) is realized between the annular end piece (43) remote from the cylinder head cover and the circumferential outer side (26).

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