CN107795353B

CN107795353B - Connecting flange of a fluid guiding device and fluid guiding device having a connecting flange

Info

Publication number: CN107795353B
Application number: CN201710762524.8A
Authority: CN
Inventors: U.德嫩; S.孔策; C.M.施图尔格斯; A.韦尔; H.多布施; A.施彭内曼; O.福卡; D.塔尔蒙-格罗斯; A.克洛茨; M.法佐尔德
Original assignee: Mann and Hummel GmbH
Current assignee: Mann and Hummel GmbH
Priority date: 2016-08-30
Filing date: 2017-08-30
Publication date: 2021-06-25
Anticipated expiration: 2037-08-30
Also published as: DE102016010391A1; KR20180025189A; KR102399772B1; CN107795353A

Abstract

A connecting flange (12) of a fluid guide device (10), in particular of an internal combustion engine, in particular of a motor vehicle, and a fluid guide device (10) are described. The connecting flange (12) comprises at least one fluid guiding space (20), at least one fastening section (32) with or for at least one fastening element (30) and at least one sealing section (22) for sealing the at least one fluid guiding space (20). At least one portion of the connecting flange (12) comprises shape-reinforcing properties. The connecting flange (12) comprises a plastic base member (18) and at least one reinforcing element (24) which is connected in a form-fitting manner to the plastic base member (18). At least one reinforcing element (24) is arranged in a loading path between the at least one fastening section (32) and the at least one sealing section (22). The at least one stiffening element (24) does not directly adjoin the fluid guiding space (20). The reinforcing element (24) connects at least two fastening elements (30) to one another or comprises them, wherein at least one fastening element (30) is a bushing.

Description

Connecting flange of a fluid guiding device and fluid guiding device having a connecting flange

Technical Field

The invention relates to a connecting flange of a fluid-conducting device, in particular of an internal combustion engine, in particular of a motor vehicle, having at least one fluid-conducting space, having or for at least one fastening section of at least one fastening element, and having at least one sealing section for sealing the at least one fluid-conducting space, wherein at least one section of the connecting flange has shape-reinforcing properties.

The invention further relates to a fluid-conducting device, in particular of a motor vehicle, in particular of an internal combustion engine, having at least one connecting flange, wherein the at least one connecting flange comprises at least one fluid-conducting space, at least one fastening section having or for at least one fastening element, and at least one sealing section for sealing the at least one fluid-conducting space, wherein at least one section of the connecting flange has shape-reinforcing properties.

Background

DE 102008052259 a1 discloses a filter device for an internal combustion engine of a motor vehicle, in particular an oil filter, having a filter housing of plastic material. The filter device comprises a reinforced connecting flange by which the filter device can be supported against the internal combustion engine such that the connecting flange is located between the filter housing and the internal combustion engine, and it comprises a media transfer device with a suitable supply/discharge conduit or connector in communication with the filter device.

The invention has the object of designing the fluid-guiding device and the connection flange of the aforementioned kind in such a way that the connection, in particular the sealing tightness of the connection, between the connection flange and the component to be connected thereto, in particular the connection part of the engine block, can be improved.

Disclosure of Invention

This object is solved according to the invention by: the connecting flange comprises a plastic base member and at least one reinforcing element form-fittingly connected with the plastic base member, wherein the at least one reinforcing element is arranged in a loading path between the at least one fastening section and the at least one sealing section, and wherein the at least one reinforcing element does not directly adjoin the fluid guiding space.

The at least one reinforcing element mechanically reinforces the connection flange. Which may hinder possible bending of the connection flange.

The connecting flange according to the invention is made of a plastic material, which is reinforced at the desired location with at least one reinforcing element. In contrast, the connecting flanges of the prior art are composed of metal. The at least one stiffening element according to the invention is integrally formed as a local stiffening member in the plastic flange. In this way, local weak spots can be avoided. In the plastic flanges known from the prior art, weak points can occur in the sealing region of the flange which lead to deformations, in particular due to the required design. The deformation may be caused by a reaction force of the seal. The deformation may be caused by the creep properties of the plastic material under load and temperature. Such deformation may result in a reduction of seal compression and thus an increased risk of leakage during use.

The connecting flange comprises a form-fitting connection between the at least one reinforcing element and the plastic material, in particular the plastic material of the plastic base body of the plastic base member. In this way, the at least one reinforcing element can be held stably in the plastic material.

Advantageously, the at least one reinforcing element may be penetrated by the plastic material of the plastic base member. In this way, a particularly stable connection can be achieved which acts positively in a plurality of directions.

The connecting flange is positioned in a loading path between the at least one fastening section and the at least one sealing section. In this way, deformation of the at least one sealing section, in particular caused by operating conditions, can be better impeded. As is generally known, a loading path is understood as the path of a force and/or moment in a component from the point of impact (or point of action, i.e. the point of introduction) to the point where it is absorbed by a reaction force and/or reaction moment. The connection flange may be positioned in a loading path between the at least one screwing-on point of the plastic base member and the at least one sealing section (in particular the seal).

Advantageously, the at least one fastening section may comprise at least one fastening element and/or at least one fixing element. In this way, the connecting flange can be fastened and/or fixed to a suitable connecting side of the fluid-conducting device, in particular to the engine block, by means of the at least one fastening section.

Advantageously, the at least one fastening section may comprise at least a part of a threaded connection. The threaded connection can be easily connected and released.

Advantageously, the at least one fastening section may comprise or at least partially form at least one through hole and/or at least one fastening element, in particular at least one screw lug, at least one bushing and/or at least one screw thread. A bushing or screw may pass through the through hole. Suitable screws may pass through screw bosses or bushings. The screw boss or bushing may be made of a stable material, in particular metal. In this way, axial deformations relative to the longitudinal screw axis due to assembly forces can be avoided. By means of the screw elements, corresponding screws can be screwed.

The at least one stiffening element does not directly adjoin the fluid guiding space. In this way, the at least one reinforcing element in operation of the fluid guiding device is not in direct contact with the fluid. Thus, the fluid guided in the fluid guiding device does not affect the reinforcing element, in particular damage or disturb the reinforcing element, and vice versa. In addition, the following can be avoided in this way: the fluid may penetrate into a boundary region between the at least one reinforcing element and the plastic material of the plastic base member. It is thus possible to avoid the fluid forming undesired channels in these boundary areas.

The at least one stiffening element may advantageously be arranged externally when viewed from the fluid guiding space of the fluid guiding device. In this way, the at least one reinforcing element can support, and optionally protect, the walls of the respective fluid guiding space, viewed from the outside.

Advantageously, the at least one sealing section may comprise at least one portion of a sealing means for sealing the at least one fluid conducting space.

Advantageously, the at least one sealing section may enclose the at least one fluid guiding space with respect to its periphery at least above a section thereof.

Advantageously, at least one sealing section can directly or indirectly sealingly interact with a corresponding sealing section of the component, in particular of the connecting portion of the engine block, to which the connecting flange is to be connected or is connected. In this way, the connection side of the connection flange can be sealed with respect to a suitable contact connection side of the respective component.

Advantageously, the at least one sealing section may comprise at least one sealing surface for contact with the at least one seal. In this way, the sealing function can be improved.

Advantageously, the at least one sealing section may comprise at least one sealing groove for receiving at least one seal.

The invention may be used in connection with fluid directing arrangements having a connection flange that tends to deform due to the sealing action and pressure conditions. In particular, the present invention can be used in conjunction with a filter module (in particular, an oil filter and a fuel filter), an oil pan, a cylinder head cover, an air guide portion (e.g., an intake pipe), and an air filter as a motor flange reinforcement for a fluid guide portion or the like.

Fluids are to be understood in this context as being very different types of gases and liquids, for example oil, water glycol mixtures, air, brake fluid.

The invention may be used in connection with internal combustion engines of motor vehicles and in connection with other types of liquid systems (in particular oil systems, fuel systems, hydraulic systems, cooling systems, fluid systems with aqueous urea solutions, etc.) of motor vehicles or other machines, in particular agricultural machines or construction machines. The invention can also be used outside the automotive sector, in particular in industrial motors. The invention can be used in connection with motor vehicles, in particular passenger cars, trucks, buses, agricultural and/or construction vehicles, construction/agricultural machinery, compressors, industrial motors or other devices, in particular the above-mentioned devices with internal combustion engines.

Advantageously, the fluid guiding device may be an oil filter module, which may be connected to a connection portion of an engine block of an internal combustion engine by means of a connection flange according to the invention. In this context, suitable oil lines may extend through the connection flange and may be connected on the part of the engine block on which the oil lines are provided. By means of the sealing sections of the connecting flange and the corresponding sealing sections provided at the engine block, the oil lines can be sealed with respect to each other and with respect to the environment. The oil filter module may comprise a filter head to which a filter (in particular a so-called spin-on filter) may be connected, in particular interchangeably, in particular by means of a thread.

In an advantageous embodiment, the at least one reinforcing element can be embedded in the plastic material at least over a section thereof by injection molding. In this way, the at least one reinforcing element may be surrounded by plastic material at least at the location of embedding by injection moulding. In this context, the plastic material may form-fittingly engage a possibly present opening, recess or hole of the at least one reinforcing element and penetrate into said opening, recess or hole. Conversely, the respective raised portion of the at least one reinforcing element may be engaged in the plastics material. In addition, the plastic material may separate the at least one reinforcing element from the fluid guiding space such that the at least one reinforcing element does not directly adjoin the fluid guiding space.

Advantageously, the at least one reinforcing element may be embedded, at least over a section thereof, by injection moulding with a plastic material of about 1mm to 3mm thickness. In this way, a form-fitting connection and embedding can be achieved which is material-saving and still effective.

According to the invention, the reinforcing element connects or comprises at least two fastening elements to one another. In this way, a force-transmitting connection between the at least two fastening elements can be achieved by the at least one reinforcing element.

Advantageously, the at least one reinforcing element may connect at least two screw lugs to each other. A corresponding screw or bolt may be guided into or through the screw boss. In this way, a corresponding connecting force can be applied there.

Advantageously, the at least one fastening element can be indirectly or directly connected to the at least one reinforcing element by means of at least one material fusion and/or form-fitting and/or frictional connection (in particular fitting), plug-in connection, adhesive connection, welded connection, soldered connection, clamped connection, locked connection, clamped connection, screwed and/or plug-in connection (in particular threaded connection), or the like, or a combination of a plurality of connection types.

Advantageously, the at least one fastening element may be integrally formed into, in particular on, the at least one reinforcing element. In this way, a stable connection between the at least one fastening element and the at least one reinforcing element can be achieved. In addition, the at least one reinforcing element can be realized in a simple manner, in particular in one piece with the at least one fastening element.

According to the invention, at least one fastening element of the reinforcing element is a bushing, in particular a screw bushing; it may in particular be integrally formed on or in the reinforcing element. In the at least one screw bushing, at least one screw or bolt can be guided and tightened. Advantageously, a force-absorbing part axially opposite to the axis of the at least one screw bushing can be realized into the axis of the at least one screw bushing.

Alternatively, or additionally, the fastening section may be realized as a cut-out penetrating the plastic base member, in particular however as a through hole.

In a further advantageous embodiment, at least one fastening element, in particular a bushing, can be open on at least one side (in particular the circumferential side). In this way, tolerance compensation, in particular during the manufacturing process or during assembly, can be improved.

Advantageously, the at least one screw bushing may have an open shape at its circumferential side. In this way, the screw bushing can be expanded more easily if necessary (in particular for tolerance compensation).

Advantageously, the at least one reinforcing element may comprise at least one bend or sharp bend. In this way, the shape of the at least one reinforcing element can be adapted to the tendency (course) of the plastic base member, in particular the sealing section. The at least one reinforcing element can be adapted to the contour of the sealing groove for the seal. In this way, the at least one reinforcing element may support the sealing groove. The shape of the at least one stiffening element may be adapted for improved introduction of forces. Advantageously, the at least one bend or sharp bend may be arranged between the at least two fastening sections or the at least two fastening elements. In this way, the at least one reinforcing element can be adapted to the loading path between the two fastening sections or fastening elements.

In a further advantageous embodiment, the at least one stiffening element may comprise at least one fixing section for fixing the at least one stiffening element during the connection process with the plastic base member. By means of the at least one fixing section, the at least one reinforcing element can be held in the correct position during the manufacturing process, in particular during embedding in the plastic material by injection molding. In this context, the securing section may be formed by at least one end face of the at least one bushing.

Advantageously, the at least one fixing section may be located in a region of the at least one reinforcing element, which region is accessible from the outside after connection with the plastic base member and is free of plastic material. In this way, the at least one fixing section can be arranged at a location of the at least one reinforcing element which is not embedded in the plastic material anyway by injection molding or casting.

Advantageously, the at least one reinforcing element may be positioned as an insert in the plastics material. The insert portion may be positioned such that material accumulation of the plastic material behind the bottom of the sealing groove of the at least one sealing section may be avoided.

In a further advantageous embodiment, the at least one reinforcing element may comprise or consist of sheet metal. The sheet metal can be machined in a simple manner, in particular formed, cut, stamped, etc. The sheet metal may be implemented with a relatively small thickness.

Advantageously, the sheet metal may be of elongate shape. In this way, it can be introduced into the plastic base member over a suitable length. The sheet metal can thus connect the spaced-apart fastening sections or fastening elements to one another accordingly.

Advantageously, the ratio of the thickness of the sheet metal to the height of the sheet metal in the direction of its narrow side may be approximately between 1 to 3 and 1 to 15, in particular approximately 1 to 5. In this way, the height may have a positive effect on the resisting moment.

In a further advantageous embodiment, the at least one reinforcing element may comprise at least one hole, in particular a plurality of holes. Through the at least one hole, the plastic material of the plastic base member can flow in this way and improve the form-fitting connection.

Advantageously, the at least one reinforcing element may consist of a perforated sheet metal or of a sheet metal provided with perforations. The perforated sheet metal may in particular be produced as a continuous strip material.

Advantageously, the at least one reinforcing element may comprise an end face and/or an edge of smooth, continuous, in particular circumferentially closed, configuration. In this way, a consistent profile may be achieved. In addition, the stability of the at least one reinforcing element can be improved in this way.

The reinforcing element consisting of sheet metal may comprise the at least one bush, wherein the bush is formed, for example, from sheet metal by reshaping, preferably by rolling, or is connected as an initially separate component to the sheet metal, preferably by soldering or welding. The bush, which is formed in one piece with the sheet metal part or is connected thereto, can advantageously be coaxially aligned with the through hole of the plastic body.

Advantageously, the at least one reinforcing element may consist of perforated sheet metal and have no intersecting holes or the like at its edges and end faces.

In a further advantageous embodiment, the at least one reinforcing element may consist of metal, ceramic, a high-performance plastic material (in particular a carbon fiber-reinforced plastic material), or a material mixture or may at least comprise such a material. By means of such a material or material mixture, a stable and heat-resistant reinforcing element can be realized.

According to the invention, in combination with the fluid guiding device, the technical object is further solved by: the connecting flange comprises a plastic base member and at least one reinforcing element form-fittingly connected with the plastic base member, wherein the at least one reinforcing element is arranged in a loading path between the at least one fastening section and the at least one sealing section, and wherein the at least one reinforcing element does not directly adjoin the fluid guiding space.

In other respects, the features and advantages shown in connection with the connecting flange according to the invention and the fluid guiding device according to the invention and their respective advantageous embodiments similarly apply to each other and vice versa. The individual features and advantages can of course be combined with one another, wherein further advantageous effects can result in more than the sum of the individual effects.

Drawings

Further advantages, features and details of the invention emerge from the following description, wherein embodiments of the invention are explained in more detail with the aid of the figures. The features, descriptions and claims disclosed in connection with the drawings are considered convenient and individually by those skilled in the art and are combined into other meaningful combinations. Schematically showing:

fig. 1 is a detail of a side view of an oil filter module of an internal combustion engine of a motor vehicle in the region of a connecting flange for connecting the oil filter module to an engine block of the internal combustion engine;

FIG. 2 is a cross-section of the connecting flange of the oil filter module of FIG. 1 along section line II-II indicated therein;

FIG. 3 is a detail of a view of the connection side of the connection flange of the oil filter module of FIGS. 1 and 2;

fig. 4 is a detail of a longitudinal section of the connection flange of the oil filter module of fig. 3 along the section line IV-IV indicated therein.

In the drawings, like parts are provided with like reference numerals.

Detailed Description

In fig. 1 to 4, the fluid guide device is shown by way of example in the form of an oil filter module 10 in different detail and cross-sectional views. The oil filter module 10 may be arranged in a motor oil circuit of an internal combustion engine of a motor vehicle (not shown in detail).

The oil filter module 10 comprises a connection head (not shown in fig. 1 to 4), for example a so-called spin-on filter for motor oil.

The oil filter module 10 comprises a connection flange 12, by means of which connection flange 12 it can be connected to a corresponding connection portion of an engine block of an internal combustion engine. Fig. 1 to 4 show details in the region of the connecting flange 12. The end face of the connecting flange 12 on the connecting side 14 facing the engine block extends substantially along an imaginary flat surface. An imaginary flat surface extends perpendicular to the imaginary connection axis 16 between the connection flange 12 and the connection portion of the engine block.

The connecting flange 12 includes a plastic base member 18. The plastic base member 18 may be implemented (e.g., injection molded) as one piece with additional, not shown, base members of the oil filter module 10. The base member of the oil filter module 10 may also include a portion for attachment of a head for a spin-on filter.

The connecting flange 12 comprises a plurality of oil-guiding or fluid-guiding spaces 20 in the form of chambers and channels in the plastic base member 18. Some of the oil guiding spaces 20 are open toward the connection side 14 (i.e., toward the connection portion of the engine block). When the oil filter module 10 is installed, the oil guiding space 20 connects the respective oil line in the base member of the oil filter module 10 with the oil line associated with the respective motor in the connection portion of the engine block. Such as a supply line for the motor oil to be cleaned which extends to the spin-on filter and a discharge line for the cleaned motor oil which extends from the spin-on filter to the engine block.

At the connection side 14, the oil guiding space 20 which is open there is surrounded by sealing grooves 22, one of the sealing grooves 22 being shown in an exemplary manner in fig. 3 and 4. A seal, not illustrated in the drawings, may be disposed in the seal groove 22. The seal and the sealing groove 22 belong to a sealing arrangement for sealing the connection flange 12 against the corresponding connection portion of the engine block. By means of the sealing means, the oil guiding spaces 20 are sealed with respect to each other and with respect to the environment. The sealing groove 22 is open towards the connection side 14 so that a seal can be inserted therein.

In addition, the connecting flange 12 includes, in an exemplary manner, an elongated, curved reinforcing element 24. The reinforcing element 24 is located in the region of the outer side of the connecting flange 12. The stiffening element 24 extends behind the groove bottom of the section of the sealing groove 22.

The reinforcing element 24 is a perforated sheet metal and has smoothly extending and circumferentially closed edges and, in the illustrated exemplary embodiment, does not have intersecting holes. The reinforcing element 24 is oriented parallel to the connection axis 16 with respect to its narrow side. The ratio of the thickness 26 (illustrated in fig. 4) of the reinforcing element 24 to the axial height 28 relative to the connection axis 16 amounts to 1 to 5, but in non-illustrated embodiments it is also possible to have a smaller ratio, for example 1 to 20.

The reinforcing element 24 is embedded in the plastic material of the plastic base member 18, wherein the plastic material penetrates into the holes of the perforated sheet metal. In this way, the reinforcing element 24 is form-fittingly connected with the plastic base member 18. The reinforcing element 24 does not directly adjoin the oil guiding space 20. Between the reinforcing element 24 and the adjacent oil guiding space 18 there is a plastic material, which separates the reinforcing element 24 from the oil guiding space 20. The thickness of the plastic material injection moulded around the reinforcing element 24 amounts to between 1mm and 3 mm. On the part of the reinforcing element 24 facing the oil guiding space 20, the thickness of the plastic material amounts to 3 mm.

At both ends thereof, the reinforcing element 24 is bent to the screw bushing 30. The axis of the screw bushing 30 extends parallel to the connection axis 16. Each screw bushing 30 is open at its circumferential side facing the oil guiding space 20.

By way of example, two through holes 32 extend through the plastic base member 18 and are each associated with one of the screw bushings 30. The axis of the bore 32 extends coaxially with the axis of the respective screw bushing 30. Screws (not shown in the drawings) extend through the holes 32 and through the bushings 30 for threadedly connecting the attachment flange 12 with the attachment portion of the engine block. The holes 32 help form fastening sections in the plastic base member 18. The reinforcing element 24 extends between two holes 32 with screw bushings 30, i.e. between the fastening sections along the sealing groove 22. The reinforcing element 24 is thus arranged in the loading path between the fastening section and the sealing groove 22.

As shown in fig. 3, a corresponding portion of the screw bushing 30, which is not covered by the plastic material or embedded by injection molding; these portions project from the connecting side 14 beyond the plastic base member 18. On the region of the screw bushing 30 that is free of plastic, a respective fastening section 31 is realized, in which the reinforcing element 24 can be fastened and positioned during the connection process with the plastic material. The fastening portion 31 is here an end face of the screw bushing 30; however, depending on the implementation of the injection molding tool, the supporting action in the tool may also be implemented at the inner wall surface of the screw bushing 30.

This means that during the injection moulding process the axial positioning of the reinforcement element 24 is achieved by the end faces of the integrally formed bush 30, and said integrally formed bush 30 is therefore at least partially not embedded by injection moulding. In this context, the injection molding tool may have a corresponding receiving area and, optionally, an axial stop which may also be spring-loaded. The reinforcing element 24 is inserted into the open injection-moulding tool, wherein for this purpose a support sleeve or pin is provided on at least one of the tool halves, onto which support sleeve or pin the reinforcing element 24 is pressed by means of a bush 30. The position of the reinforcement part in the closed state of the injection molding tool or the tolerance range of the height of the tool in the opening direction is adjusted in this region such that preferably no bracing of the reinforcement part occurs when the tool is closed. The stiffening element 24 can thus be inserted into one half of the mould onto the stop, while there is a clearance with respect to the other tool part when the tool is closed. However, compression of the reinforcing element in the injection tool may be achieved if this is appropriate for the person skilled in the art.

Alternatively, the screw bushing 30 may also be in a lower position on the connection side 14 relative to the surface of the plastic base member 18, wherein then there is a suitable projection of the bushing on the side of the plastic base member 18 facing away from the connection side 14; depending on how the positioning of the reinforcing elements is achieved during the manufacturing process.

Claims

1. A connection flange (12) of a fluid-conducting device (10) of an internal combustion engine of a motor vehicle, having at least one fluid-conducting space (20), at least one fastening section (32) for at least one fastening element (30) and at least one sealing section (22) for sealing at least one fluid-conducting space (20), wherein at least a section of the connection flange (12) comprises shape-reinforcing properties, characterized in that the connection flange (12) comprises a plastic base member (18) and at least one reinforcing element (24) form-fittingly connected to the plastic base member (18), wherein the at least one reinforcing element (24) is arranged in a loading path between at least one fastening section (32) and at least one sealing section (22), and wherein the at least one reinforcing element (24) does not directly adjoin the fluid-conducting space (20), wherein the at least one reinforcing element (24) connects at least two fastening elements (30) to one another or comprises them, and wherein at least one fastening element (30) is a bushing which is open at least at one side.

2. A connecting flange according to claim 1, characterised in that the bushing is a slotted bushing (30).

3. The attachment flange of claim 1 wherein said one side is a circumferential side.

4. The connecting flange as claimed in claim 1, characterised in that the at least one reinforcing element (24) is embedded in the plastic material by injection moulding at least on sections thereof.

5. The connecting flange as claimed in one of claims 1 to 4, characterized in that the fastening section (32) is embodied as a cut-out penetrating into the plastic base member (18).

6. The connection flange as claimed in one of claims 1 to 4, characterized in that the fastening section (32) is embodied as a through-hole (32).

7. The connection flange as claimed in one of claims 1 to 4, characterized in that the at least one reinforcing element (24) comprises at least one fixing section (31) for fixing the at least one reinforcing element (24) during the connection process with the plastic base component (18), wherein an end face of at least one bushing (30) is embodied as a fixing section (31).

8. The connection flange as claimed in any one of claims 1 to 4, characterized in that the at least one reinforcing element (24) comprises or consists of sheet metal.

9. The connecting flange according to claim 8, characterised in that the reinforcing element (24) consisting of sheet metal comprises the at least one bush (30), wherein the bush (30) is formed from the sheet metal by reshaping or is connected to the sheet metal by soldering or welding.

10. A connecting flange according to claim 9, characterised in that the bush (30) is formed from the sheet metal by rolling.

11. The connecting flange according to any one of claims 1 to 4, characterised in that at least one reinforcing element (24) comprises at least one hole.

12. The connecting flange according to claim 11, characterized in that at least one reinforcing element (24) comprises a plurality of holes.

13. The connection flange as claimed in any one of claims 1 to 4, characterized in that the at least one reinforcing element (24) consists of a metal, a ceramic, a high-performance plastic material or at least comprises such a material.

14. The attachment flange as claimed in claim 13 wherein said high performance plastic material is a carbon fiber reinforced plastic material.

15. A fluid-guiding device (10) of an internal combustion engine of a motor vehicle having at least one connecting flange (12), wherein the at least one connecting flange (12) comprises at least one fluid-guiding space (20), at least one fastening section (32) for at least one fastening element (30) and at least one sealing section (22) for sealing the at least one fluid-guiding space (20), wherein the at least one section of the connecting flange (12) comprises form-reinforcing properties, characterized in that the connecting flange (12) comprises a plastic base member (18) and at least one reinforcing element (24) form-fittingly connected with the plastic base member (18), wherein the at least one reinforcing element (24) is arranged in a loading path between the at least one fastening section (32) and the at least one sealing section (22), and wherein the at least one reinforcing element (24) does not directly adjoin the fluid guiding space (20), wherein the at least one reinforcing element (24) connects at least two fastening elements (30) to each other or comprises them, and wherein the at least one fastening element (30) is a bushing which is open at least at one side.

16. A fluid guiding device according to claim 15, characterised in that the bushing is a slotted bushing (30).

17. The fluid directing device of claim 15 wherein said one side is a circumferential side.