EP3450706A1 - Device for rotatably supporting a camshaft - Google Patents

Abstract

The invention relates to a device (10, 110) for rotatably supporting a camshaft (12) of an internal combustion engine. The apparatus (10; 110) has a first bearing body (14; 14A) with a receptacle (22; 22A) for rotatably supporting the camshaft (12). The device (10, 110) comprises a cylinder head (16) or a mounting frame (30) for fixing the first bearing body (14, 14A). The apparatus (10; 110) has a first attachment means (18) securing the first bearing body (14; 14A) to the cylinder head (16) or mounting frame (30). The first fastener (18) is the only fastener (18) that secures the first bearing body (14; 14A) to the cylinder head (16) or mounting frame (30).

Description

The invention relates to a device for rotatably supporting a camshaft.

Camshafts are needed in internal combustion engines for controlling the intake and exhaust valves and attached via so-called bearing blocks, for example. On a cylinder head in the cylinder crankcase of the engine. Alternatively, the bearing blocks can also be attached to a mounting frame. The bearing blocks rotatably support the camshaft. In order to achieve the smoothest possible storage of the camshaft, it is necessary that the camshaft and the bearing blocks are aligned with respect to the cylinder head.

The DE 10 2011 081 483 A1 discloses a method for simplified and positionally accurate fixation of a camshaft module with a camshaft and bearing blocks on a cylinder head. The pedestals are mounted in the axial direction and aligned with respect to an angle on the camshaft. The camshaft is aligned with two alignment elements relative to the cylinder head. The individual bearing blocks are bolted to the cylinder head with simultaneous or intermediate rotation of the camshaft.

From the DE 197 52 381 A1 a cylinder head for an internal combustion engine is known. At least one bearing block with a bearing half for a camshaft and a bearing half for a rocker shaft for at least one rocker arm is provided on the cylinder head. The cylinder head has a first separate lubricant supply channel and a second separate lubricant supply channel in the bearing block. A first end of the second lubricant supply passage communicates with the first lubricant supply passage. A second end of the second lubricant supply channel terminates open in a bearing surface for the rocker shaft.

The WO 2008/061382 A1 discloses a camshaft assembly. The camshaft assembly has at least two bearing blocks, each with a bearing receptacle, in which a shaft portion of a camshaft is rotatably mounted on. At each bracket is a flat contact surface for support and mounting of the bearing block is formed on a bearing surface of a cylinder head. Each bearing block is attached to the cylinder head with two screws each.

The EP 0 285 598 B1 discloses an injection internal combustion engine having in-line cylinders, two overhead camshafts, and four valves and a central pump nozzle per cylinder. Above the associated camshaft on the cylinder head detachably mounted rocker arms are provided for driving the pump nozzles. In this case, the drive of the cam for the rocker arms for actuating the pump nozzles takes place alternately for a cylinder from the one camshaft and for the adjacent cylinder from the second camshaft, wherein each rocker arm is fastened individually. The detachable individual attachment of the rocker arm takes place on the bearing blocks fastened by screws on the cylinder head, wherein the screws also serve for anchoring bearing parts for the camshafts.

The DE 10 2007 025 129 A1 discloses a cylinder head cover for covering a cylinder crankcase of an internal combustion engine. At least one upper bearing part for a camshaft has at least one passage opening, which is aligned on the one hand with a screw-in / through hole in a bearing base and / or a screw-in in the cylinder crankcase and on the other hand with a through hole in the cylinder head cover. A fastening of the cylinder head cover and the bearing upper part on the cylinder crankcase is possible via a common fastening screw.

The invention is based on the object to provide an alternative or improved device for rotatably supporting a camshaft. In particular, a simple and space-optimized design should be realized.

The object is achieved by a device according to the independent claim. Advantageous developments are specified in the dependent claims and the description.

The device is provided for rotatably supporting a camshaft of an internal combustion engine. The device has a first bearing body with a receptacle for rotatably supporting the camshaft. The device has a cylinder head or a mounting frame for fixing the first bearing body. The device includes a first attachment means (eg, a first attachment screw) that secures the first bearing body to the cylinder head or mounting frame. The first attachment means is the only attachment means that secures (fixes) the first bearing body to the cylinder head or mounting frame.

The device has the advantage that a space-saving design of the first bearing body is made possible. The first bearing body only has to provide sufficient material for receiving the fastener on one side next to the camshaft receptacle. In particular, the first bearing body may be formed asymmetrically with respect to a vertical plane through a central longitudinal axis of the receptacle. In addition, manufacturing costs may be reduced because fewer fasteners are needed, fewer fastener (e.g., screw holes) receivers need to be made and assembly time is reduced. Depending on the embodiment, the first bearing body may be attached either to a cylinder head or to a mounting frame.

Since only one receptacle (eg blind hole or the like) has to be provided for the single fastening means, the cylinder head or mounting frame can also be designed more freely.

In particular, the first bearing body may have a first side region, in which the first fastening means is accommodated, and a second side region, opposite the first side region, with respect to the receptacle for the camshaft. The cylinder head may include a flow passage extending in an area of the cylinder head disposed adjacent to the second side portion (eg, adjacent to the second side portion (eg, below the second side portion with respect to a vertical axis) of the first bearing body. The flow channel may preferably have a casting projection-free shape (design) in this area. This is made possible by the fact that no Gußbütze (Gußvorsprung) is necessary for receiving a blind hole for another fastener. Thus, the provision of only a single fastener can contribute to a flow-optimized design of a flow channel in the cylinder head.

Preferably, the receptacle for the camshaft may be a cylindrical through hole or a recess in the form of a half cylinder.

Preferably, when using a mounting frame for attaching the first bearing body, the mounting frame may be fixed (fixed, fixed) to a cylinder head.

It is also possible that the camshaft is arranged as an overhead camshaft. For example, when using a rocker arm with cam follower to follow a cam contour the camshaft is pressed down during operation of the camshaft. Thus, the camshaft does not tend to lift off, whereby the use of a single fastener may be sufficient.

In an embodiment, the first attachment means is a first attachment screw. In particular, the first fastening screw may be the only fastening screw that secures the first bearing body to the cylinder head or mounting frame.

The first bearing body may preferably have a through hole for receiving the first fastening means, in particular the first fastening screw, which extends through the through hole.

In a further embodiment, the first fastening means fixed to the first bearing body non-positively and positively on the cylinder head or mounting frame.

Preferably, the first attachment means may be a releasable attachment means.

In particular, the first attachment means may be the only (eg releasable) attachment means of the device.

In one embodiment, the first bearing body forms a one-piece bearing block for supporting the camshaft.

Alternatively, the device has a second bearing body with a receptacle (for example as a recess in the form of a half cylinder) for supporting the camshaft. The first bearing body and the second bearing body together form a two-part bearing block. The receptacle (for example as a recess in the form of a half cylinder) of the first bearing body and the receptacle (for example as a recess in the form of a half cylinder) of the second bearing body form a common receptacle for the camshaft.

Thus, the present disclosure is useful not only for one-piece pedestals but also for two-piece pedestals. Thus, the present disclosure can be used not only with built-in camshafts but also with forged camshafts where threading of the pedestals is not possible.

Preferably, the second bearing body, a through hole for receiving the first fastening means, in particular the first fastening screw, the / by the Through hole extends, have. The through hole of the first bearing body and the through hole of the second bearing body may be aligned with each other.

In a further development, the first bearing body and the second bearing body via a second fastening means, in particular a second fastening screw, to each other, preferably non-positively and positively secured.

In particular, the first attachment means and the second attachment means may be provided on opposite sides of the first bearing body with respect to the camshaft housing.

Preferably, the second attachment means may be a releasable attachment means.

In a particularly preferred embodiment, the first attachment means and the second attachment means, in particular the first attachment screw and the second attachment screw, are the only attachment means of the device.

In a further embodiment variant, the first fastening means additionally fixes the second bearing body on the cylinder head or mounting frame. It is also possible that the first attachment means is the only attachment means that secures the second bearing body to the first bearing body.

In one embodiment, the device further comprises at least one positioning element, which is arranged between the first bearing body and the second bearing body for positioning the first bearing body relative to the second bearing body. This can be ensured in particular that the camshaft receptacles of the bearing body are aligned with each other. In particular, the positioning elements can position the first bearing body relative to the second bearing body in a plane perpendicular to the longitudinal axis of the first fastening means.

Alternatively, the device may not include a positioning member for positioning the first or second bearing body relative to the cylinder head or mounting frame. This can save the costs for the positioning elements.

In a development, the at least one positioning element arranged between the first bearing body and the second bearing body comprises a positioning pin, a fitting sleeve surrounding the first fastening means, and / or a fitting sleeve surrounding the second fastening means. In this case, in particular the use of dowel sleeves a allow small dimensioning of the bearing bodies, since no additional material areas are required for the provision of holes for positioning pins.

In one embodiment, the apparatus further comprises at least one positioning element disposed between the first or second bearing body and the cylinder head or mounting frame for positioning the first or second bearing body relative to the cylinder head or mounting frame. Thus, an alignment of the corresponding bearing body can be improved relative to the cylinder head or mounting frame. In particular, the positioning elements may position the first or second bearing body relative to the cylinder head or mounting frame in a plane perpendicular to the longitudinal axis of the first fastening means.

In one development, the at least one positioning element arranged between the first or second bearing body and the cylinder head or the mounting frame comprises a positioning pin and / or a fitting sleeve which surrounds the first fastening means. The use of a fitting sleeve may allow for a small dimensioning of the bearing bodies, since no additional material areas are needed for providing holes for positioning pins.

However, it is also possible to provide no positioning between the first or second bearing body and the cylinder head or the mounting frame. An alignment between the corresponding bearing body and the cylinder head (or the mounting frame) could then be made possible by means of guidance through the camshaft. The camshaft is mounted in a plurality of spaced apart longitudinally of the camshaft devices for rotatably supporting the camshaft.

In a further embodiment, the device has a rocker shaft for rotatably supporting a rocker arm. The first fastening means additionally secures the rocker arm axis to the cylinder head or mounting frame, and in particular also to the first and / or second bearing body. Thus, a further additional fastening means for securing the rocker arm axis can be saved. Consequently, the assembly time can be reduced.

In one embodiment, the first bearing body has a receptacle for the rocker shaft, which is preferably arranged on a side opposite the cylinder head or mounting frame side of the first bearing body.

In a further embodiment, a lubricating fluid longitudinal channel of the rocker shaft is in fluid communication with the receptacle for the camshaft of the first bearing body, preferably via a branch channel of the first bearing body and a branch channel of the rocker shaft. This allows a lubricating fluid to flow via the rocker shaft to a plain bearing of the camshaft.

In one embodiment, the mounting frame or the cylinder head has a hole, in particular a blind hole or a through hole, with a thread for non-positive and positive fastening of the first bearing body on the mounting frame or cylinder head by means of the first attachment means. Thus, the first fastening means, in particular in the form of a fastening screw for fastening the first bearing body (and optionally the second bearing body) can be screwed directly into the blind hole.

In a further embodiment, the first bearing body is formed asymmetrically with respect to a vertical plane through a central longitudinal axis of the receptacle for the camshaft. This is made possible in particular by the provision of a single attachment means (the first attachment means) for attachment to the cylinder head or mounting frame.

Alternatively or additionally, the first fastening means can produce a tilting moment for supporting the first bearing body on a bearing surface of the cylinder head or mounting frame.

The invention also relates to a motor vehicle, in particular commercial vehicle, with a device as disclosed herein. The commercial vehicle may be, for example, a truck or a bus.

It is also possible to use the device as disclosed herein for passenger cars, large engines, off-highway vehicles, stationary engines, marine engines, etc.

Figur 1

eine Schnittansicht durch eine Vorrichtung zum drehbaren Lagern einer Nockenwelle; und

Figur 2

eine Schnittansicht durch eine Vorrichtung zum drehbaren Lager einer Nockenwelle gemäß einem weiteren Ausführungsbeispiel.

The preferred embodiments and features of the invention described above can be combined with one another as desired. Further details and advantages of the invention will be described below with reference to the accompanying drawings. Show it:

FIG. 1

a sectional view through an apparatus for rotatably supporting a camshaft; and

FIG. 2

a sectional view through a device for rotatably supporting a camshaft according to another embodiment.

The embodiments shown in the figures are at least partially identical, so that similar or identical parts are provided with the same reference numerals and to the explanation of which reference is also made to the description of the other embodiments or figures in order to avoid repetition.

The FIG. 1 shows a device 10 for rotatably supporting a camshaft 12. The device 10 has a bearing body 14, a cylinder head 16, a fastening screw 18 and a rocker shaft 20.

The apparatus 10 may be used with any internal combustion engine for supporting the camshaft 12. The internal combustion engine may be included, for example, in a motor vehicle, in particular a commercial vehicle. The commercial vehicle may be, for example, a truck or a bus.

The bearing body 14 is formed as a one-piece bracket. The bearing body 14 has a receptacle 22 for the camshaft 12. The camshaft 12 can be rotatably mounted in the receptacle 22 via a sliding bearing. The receptacle 22 is a cylindrical through-bore of the bearing body 14. The camshaft 12 is a built camshaft. A cylindrical portion of the camshaft 12 is inserted in the disassembled state of the camshaft 12 in the receptacle 22. The camshaft 12 is then assembled. For rotatably supporting the camshaft 12, a plurality of bearing bodies 14 along a longitudinal axis of the camshaft 12 is provided. The camshaft 12 is arranged as an overhead camshaft (OHC).

The bearing body 14 is fastened (fixed) to the cylinder head 16 via the fastening screw 18. In detail, the fastening screw 18 extends through a through hole 24 of the bearing body 14. The fastening screw 18 is screwed into a thread of a blind hole 26 of the cylinder head 16. The blind hole 26 extends into a cast slug (casting protrusion) 27, which is shaped in particular for providing the blind hole 26 or a through-hole.

It should be emphasized that the fastening screw 18 is the only fastening screw which secures the bearing body 14 to the cylinder head 16. Conventional bearing blocks usually use two or four screws fixing the bearing body to the cylinder head.

It has been found that the fastening screw 18 is sufficient as the only fastening screw for the bearing body 14. For example. In embodiments where a rocker arm is used, the camshaft 12 is pressed down during operation by the cam follower of the rocker arm. The weight of the camshaft 12 also acts down. The camshaft 12 thus shows no tendency to lift off the cylinder head 16 together with the bearing body 14. In addition, by the screw force of the fastening screw 18 and a one-sided material area next to the fastening screw 18 (left in FIG. 1 ) generates a tilting moment on a bearing surface 29 to the cylinder head 16, which securely holds the first bearing body 14 on the cylinder head 16.

An advantage of the use of only one fastening screw 18 is the space-saving dimensioning of the bearing body 14 and the saving of the costs for further fastening screws. In detail, the bearing body 14, starting from the receptacle 22, has only on one side a material area for receiving the fastening screw 18. On the opposite side of the bearing body 14 can end directly with a recording 22 limiting wall area. Thus, the bearing body 14 can be better adapted to the available space. In particular, the bearing body 14 may be formed asymmetrically with respect to a vertical plane through a central longitudinal axis of the receptacle 22 of the bearing body 14.

In addition, there is a greater degree of freedom with regard to the design of the cylinder head 16. The cylinder head 16, in particular in the region A, does not have a cast slug (no casting protrusion) for providing a blind hole for screwing in a fastening screw. Instead, the region A can be formed, for example, flow-optimized for a fluid channel 28 in the cylinder head 16.

Finally, a part number of the device can be reduced due to the reduction of the fastening screws. In addition, the production time and assembly time are reduced because fewer screw holes are made and less mounting screws must be mounted.

In addition, it should be noted that the present disclosure is not limited to that the fastening screw 18, the bearing body 14 on the cylinder head 16th attached. Alternatively, the fastening screw 18 could fix the bearing body 14 to a mounting frame 30. The mounting frame 30 could then in turn be attached to a cylinder head. In other words, that in FIG. 1 Alternatively, instead of a portion of a cylinder head 16, a part of a mounting frame 30 may be an area shown below the bearing body 14.

As an alternative to the fastening screw 18, another fastening means could also be used for the non-positive and positive fastening of the bearing body 14 to the cylinder head 16.

The rocker shaft 20 is for rotatably supporting a rocker arm (not shown). The rocker arm is via a cam follower in operative connection between the camshaft 12 and one or more gas exchange valves (not shown) for actuating the gas exchange valves.

In the illustrated embodiment of FIG. 1 attached the mounting screw 18 additionally the rocker shaft 20 on the cylinder head 16 (mounting frame 30). In detail, the fastening screw 18 extends through a through hole 32 of the rocker shaft 20. In the assembled state of the device 10, the holes 32, 24 and 26 are aligned with each other along a longitudinal axis of the fastening screw 18. A screw head 18A rests on a contact surface 20A of the rocker shaft 20. The rocker shaft 20 is mounted in a receptacle 21 of the bearing body 14. The additional attachment of the rocker shaft 20 via the fastening screw 18 is optional.

For lubricating the sliding bearing in the receptacle 22, a lubricating fluid via a longitudinal channel 34 of the rocker shaft 20 can be supplied. A branch channel 36 of the rocker shaft 20 opens into a branch channel 38 of the bearing body 14. The branch channel 38 in turn opens into the receptacle 22nd

For relative positioning of the bearing body 14 relative to the cylinder head 16 (mounting frame 30) may optionally be used in addition positioning elements 40, 42. The positioning elements 40, 42 position the bearing body 14 to the cylinder head 16 in a plane perpendicular to the longitudinal axis of the fastening screw 18th

The positioning member 40 is formed as a fitting sleeve. The positioning element 40 is provided in a form-fitting manner in a recess 44 of the bearing body 14 and a recess 46 of the cylinder head 16 (mounting frame 30). The positioning element 40 is to arranged the fastening screw 18 around, preferably without touching the fastening screw 18.

The positioning element 42 is designed as a positioning pin. The positioning element 42 is provided in a form-fitting manner in a recess 48 of the bearing body 14 and a recess 50 of the cylinder head 16 (mounting frame 30). The positioning elements can, for example, also be designed as dowel sleeves.

It should be noted that embodiments without positioning element are conceivable. The orientation of the bearing body 14 could then, for example, by means of a guide through the camshaft 12, which is mounted in a plurality of bearing bodies 14, allowed.

The FIG. 2 shows a further embodiment of an apparatus 110 for rotatably supporting the camshaft 12. The device 110 is characterized in particular by the fact that it is also suitable for the rotatable bearings of forged camshafts, since a threading of the bearing blocks is not possible here.

Instead of a one-piece bearing body, the device 110 has a first bearing body 14A and a second bearing body 14B. The first bearing body 14A and the second bearing body 14B constitute a two-piece bearing block. The first bearing body 14A has a first receptacle 22A and the second bearing body 14B has a second receptacle 22B. The receptacles 22A, 22B form a common receptacle in the form of a cylinder for the camshaft 12.

In this embodiment, it should again be emphasized that the fixing screw 18 is the only fixing screw which fixes (fixes) the bearing bodies 14A, 14B to the cylinder head 16 (fixing frame 30). More specifically, the fixing screw 18 extends through a through hole 24A of the first bearing body 14A and a through hole 24B of the second bearing body 14B.

In addition, a second fastening screw 52 may be provided which secures the first bearing body 14A to the second bearing body 14B. The mounting bolts 18 and 52 may be positioned on opposite sides of the camshaft 12. The fastening screw 52 extends through a through-hole 58 in the first bearing body 14A. The fastening screw 52 is screwed into a thread of a blind hole 60 of the second bearing body 14B.

Positioning elements 54 and 56 are provided for positioning the bearing bodies 14A and 14B relative to each other. The positioning elements 54, 56 position the first bearing body 14A to the second bearing body 14B in a plane perpendicular to the longitudinal axis of the fastening screw 18. The positioning elements 54, 56 are formed as dowel sleeves, but may, for example, also be formed as dowel pins. The positioning elements 54, 56 connect the first bearing body 14 A in a form-fitting manner with the second bearing body 14 B. The positioning element 54 is arranged around the fastening screw 18, preferably without touching the fastening screw 18. The positioning element 56 is arranged around the fastening screw 52, preferably without touching the fastening screw 52.

The device 110 of FIG. 2 is an embodiment in which no positioning elements for positioning the first and second bearing body 14A, 14B relative to the cylinder head 16 (mounting frame 30) are provided. In further developments of this embodiment, positioning elements could be provided between the second bearing body 14B and the cylinder head 16 (mounting frame 30).

The invention is not limited to the preferred embodiments described above. Rather, a variety of variants and modifications is possible, which also make use of the inventive idea and therefore fall within the scope. In particular, the invention also claims protection of the subject matter and the features of the subclaims independently of the claims referred to.

LIST OF REFERENCE NUMBERS

10, 110

Device for rotatably supporting a camshaft

12

camshaft

14

bearing body

14A

First bearing body

14B

Second bearing body

16

cylinder head

18

Fixing screw (fastener)

18A

screw head

20

rocker shaft

20A

contact surface

21

admission

22

admission

22A

Recording in the first bearing body

22B

Recording in the second bearing body

24

Through Hole

24A

Through hole in the first bearing body

24B

Through hole in the second bearing body

26

blind

27

Cast iron (casting protrusion)

28

fluid channel

29

bearing surface

30

mounting frame

32

Through Hole

34

longitudinal channel

36

Stichkanal

38

Stichkanal

40

Fitting sleeve (positioning element)

42

Positioning pin (positioning element)

44

recess

46

recess

48

recess

50

recess

52

fixing screw

54

Fitting sleeve (positioning element)

56

Fitting sleeve (positioning element)

58

Through Hole

60

blind

A

Cast-iron-free (cast-ledge-free) area

Claims (15)

Apparatus (10; 110) for rotatably supporting a camshaft (12) of an internal combustion engine, comprising: a first bearing body (14; 14A) having a receptacle (22; 22A) for rotatably supporting the camshaft (12); a cylinder head (16) or a mounting frame (30) for mounting the first bearing body (14; 14A); and a first fastener (18) securing the first bearing body (14; 14A) to the cylinder head (16) or mounting frame (30), the first fastener (18) being the sole fastener (18) securing the first bearing body (14; 14A) is secured to the cylinder head (16) or mounting frame (30). The apparatus (10; 110) of claim 1, wherein: the first attachment means (18) is a first attachment screw; and or the first fastening means (18) fixed to the first bearing body (14; 14A) frictionally and positively on the cylinder head (16) or mounting frame (30); and or the first attachment means (18) is a releasable attachment means. Device (10) according to claim 1 or claim 2, wherein the first bearing body (14) forms a one-piece bearing block for supporting the camshaft (12). The apparatus (110) of claim 1 or claim 2, further comprising a second bearing body (14B) having a receptacle (22B) for supporting the camshaft (12), wherein: the first bearing body (14A) and the second bearing body (14B) together form a two-part bearing block; and the receptacle (22A) of the first bearing body (14A) and the receptacle (22B) of the second bearing body (14B) form a common receptacle for the camshaft (12). Apparatus (110) according to claim 4, wherein:
the first bearing body (14A) and the second bearing body (14B) via a second fastening means (52), in particular a second fastening screw, to each other, preferably non-positively and positively secured. Apparatus (110) according to claim 4 or claim 5, wherein:
the first attachment means (18) additionally attaches the second bearing body (14B) to the cylinder head (16) or attachment frame (30). The apparatus (110) of any one of claims 4 to 6, further comprising at least one positioning member (54, 56) disposed between the first bearing body (14A) and the second bearing body (14B) for positioning the first bearing body (14A) relative to the second bearing body (14B) is arranged. Device (110) according to claim 7, wherein the at least one positioning element (54, 56) arranged between the first bearing body (14A) and the second bearing body (14B) comprises a positioning pin, a fitting sleeve surrounding the first fastening means (18) and / or a the second fastening means (52) surrounding the fitting sleeve. Device (10) according to one of the preceding claims, wherein: the device (10) further comprises at least one positioning element (40, 42) arranged between the first bearing body (14) or the second bearing body (14B) on the one hand and the cylinder head (16) or the mounting frame (30) on the other hand for positioning the first or second bearing body (14; 14B) is arranged relative to the cylinder head (16) or mounting frame (30); or the device (10) has no positioning element for positioning the first or second bearing body (14; 14B) relative to the cylinder head (16) or mounting frame (30). Device (10) according to claim 9, wherein the at least one, between the first or second bearing body (14; 14B) and the cylinder head (16) or the mounting frame (30) arranged positioning member (40, 42) a positioning pin and / or a fitting sleeve comprising the first attachment means (18). The apparatus (10; 110) of any preceding claim, further comprising:
a rocker shaft (20) for rotatably supporting a rocker arm, the first fastener (18) additionally securing the rocker shaft (20) to the cylinder head (16) or mounting frame (30). The apparatus (10; 110) of claim 11, wherein: the first bearing body (14; 14A) has a receptacle for the rocker shaft (20) which is preferably arranged on a side of the first bearing body (14; 14A) opposite the cylinder head (16) or mounting frame (30); and or a lubricating fluid longitudinal channel (34) of the rocker shaft (20) is in fluid communication with the receptacle (22; 22A) for the camshaft (12) of the first bearing body (14; 14A), preferably via a branch passage (38) of the first bearing body (14; 14A ) and a branch channel (36) of the rocker shaft (20). Device (10; 110) according to one of the preceding claims, wherein the fastening frame (30) or the cylinder head (16) has a hole (26), in particular a blind hole or a through hole, with a thread for positive and positive fastening of the first bearing body (10). 14, 14A) on the attachment frame (30) or cylinder head (16) by means of the first attachment means (18). Apparatus (10; 110) according to any one of the preceding claims, wherein: the first bearing body (14; 14A) is asymmetrically formed with respect to a vertical plane through a central longitudinal axis of the camshaft (12) receptacle (22; 22A); and or the first fastening means (18) generates a tilting moment for supporting the first bearing body (14; 14A) on a bearing surface (29) of the cylinder head (16) or mounting frame (30). Motor vehicle, in particular utility vehicle, with a device (10; 110) according to one of the preceding claims.

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