FRESH AIR SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE

Abstract

A fresh air supply system may include a housing that may include an upper housing part and a lower housing part and delimiting a housing interior. The system may also include at least one bearing part arranged in the housing interior and a shaft at least partially arranged and rotatably mounted in the at least one bearing part. The at least one bearing part, in a cross-section of the housing perpendicular to a rotation axis of the shaft, may be structured in a pot-like manner including a pot base. The lower housing part may include a lower housing part extension resting against a projection of the pot base such that a clamping connection is formable. The upper housing part may include at least one upper housing part extension which the at least one bearing part may rest against.

Claims

1. A fresh air supply system for an internal combustion engine of a motor vehicle, comprising: a housing including an upper housing part and a lower housing part and delimiting a housing interior; a shaft arranged in the housing interior and mounted rotatably relative to the housing; at least one bearing part arranged in the housing interior, the shaft at least partially arranged and rotatably mounted in the at least one bearing part; the at least one bearing part, in a cross-section of the housing perpendicular to a rotation axis of the shaft, structured in a pot-like manner including a pot base and a pot collar protruding from the pot base; the pot base resting against the lower housing part such that the at least one bearing part is clampable between the upper housing part and the lower housing part; the pot base, in the cross-section of the housing, including a projection protruding towards the lower housing part, the projection including a recess; the lower housing part including a lower housing part extension protruding towards the at least one bearing part and resting against the projection such that a clamping connection is formable; and the upper housing part, in the cross-section of the housing, including at least one upper housing part extension protruding towards the lower housing part, the at least one bearing part resting against the at least one upper housing part extension such that the at least one bearing part is clampable between the upper housing part and the lower housing part; wherein the at least one bearing part is arranged at a distance from the lower housing part in a region of the at least one upper housing part extension.

2. The fresh air supply system according to claim 1, wherein the shaft is arranged between the at least one bearing part and the lower housing part.

3. The fresh air supply system according to claim 1, wherein the at least one bearing part is braced between the upper housing part and the lower housing part to form the clamping connection.

4. The fresh air supply system according to claim 1, wherein the at least one upper housing part extension includes a plurality of upper housing part extensions arrange on an underside of the upper housing part which faces the housing interior, the plurality of upper housing part extensions arranged at a distance from one another and protruding away from the upper housing part towards the at least one bearing part.

5. The fresh air supply system according to claim 4, wherein the plurality of upper housing part extensions are arranged on a first longitudinal side of the upper housing part and on a second longitudinal side of the upper housing part lying opposite the first longitudinal side.

6. The fresh air supply system according to claim 4, wherein the at least one bearing part includes a plurality of recesses structured complimentary to the plurality of upper housing part extensions, each of the plurality of recesses configured to engage a respective one of the plurality of upper housing part extensions.

7. The fresh air supply system according to claim 1, wherein the at least one bearing part includes a shaft recess in which the shaft is at least partially arranged.

8. The fresh air supply system according to claim 1, wherein the pot base, in the cross-section of the housing, faces the upper housing part and includes a shaft recess configured to receive the shaft.

9. The fresh air supply system according to claim 1, wherein the pot collar is arranged at a distance from the lower housing part such that the clamping connection is formable.

10. The fresh air supply system according to claim 1, wherein the lower housing part extension closes the recess of the projection.

11. The fresh air supply system according to claim 1, wherein the upper housing part has, in the cross-section of the housing, a flange portion protruding radially outwards, and wherein the flange portion is welded to the lower housing part.

12. The fresh air supply system according to claim 1, wherein the at least one bearing part includes at least two bearing parts arranged adjacent and at a distance to one another along an axial direction defined by the rotation axis of the shaft.

13. The fresh air system according to claim 1, wherein the at least one bearing part is not welded to the upper housing part.

14. An internal combustion engine comprising a fresh air supply system including: a housing including an upper housing part and a lower housing part and delimiting a housing interior; a shaft arranged and rotatably mounted in the housing interior; at least one bearing part arranged in the housing interior, the shaft at least partially arranged and rotatably mounted in the at least one bearing part; the at least one bearing part, in a cross-section of the housing perpendicular to a rotation axis of the shaft, structured in a pot-like manner including a pot base and a pot collar protruding from the pot base; the pot base resting against the lower housing part such that the at least one bearing part is clampable between the upper housing part and the lower housing part; the pot base, in the cross-section of the housing, including a projection protruding towards the lower housing part, the projection including a recess; the lower housing part including a lower housing part extension protruding towards the at least one bearing part and resting against the projection such that a clamping connection is formable; and the upper housing part, in the cross-section of the housing, including at least one upper housing part extension protruding towards the lower housing part, the at least one bearing part resting against the at least one upper housing part extension such that the at least one bearing part is clampable between the upper housing part and the lower housing part; wherein the at least one bearing part is arranged at a distance from the lower housing part in a region of the at least one upper housing part extension.

15. The internal combustion engine according to claim 14, wherein the shaft is arranged between the at least one bearing part and the lower housing part.

16. The internal combustion engine according to claim 14, wherein the at least one bearing part is braced between the upper housing part and the lower housing part to form the clamping connection.

17. The internal combustion engine according to claim 14, wherein the at least one upper housing part extension includes a plurality of upper housing part extensions arrange on an underside of the upper housing part which faces the housing interior, the plurality of upper housing part extensions arranged at a distance from one another and protruding away from the upper housing part towards the at least one bearing part.

18. The internal combustion engine according to claim 17, wherein the at least one bearing part includes a plurality of recesses structured complimentary to the plurality of upper housing part extensions, each of the plurality of recesses configured to engage a respective one of the plurality of upper housing part extensions.

19. The internal combustion engine according to claim 14, wherein the at least one bearing part includes a shaft recess in which the shaft is at least partially arranged.

20. A fresh air supply system for an internal combustion engine of a motor vehicle, comprising: a housing including an upper housing part and a lower housing part and delimiting a housing interior; a shaft arranged and rotatably mounted in the housing interior; at least one bearing part arranged in the housing interior, the shaft at least partially arranged and rotatably mounted in the at least one bearing part; the at least one bearing part, in a cross-section of the housing perpendicular to a rotation axis of the shaft, structured in a pot-like manner including a pot base and a pot collar protruding from the pot base; the pot base resting against the lower housing part such that the at least one bearing part is clampable between the upper housing part and the lower housing part; the pot base, in the cross-section of the housing, including a projection protruding towards the lower housing part, the projection including a recess; the lower housing part including a lower housing part extension protruding towards the at least one bearing part and resting against the projection such that the recess of the projection is closed and a clamping connection is formable; and the upper housing part, in the cross-section of the housing, including at least one upper housing part extension protruding towards the lower housing part, the at least one bearing part resting against the at least one upper housing part extension such that the at least one bearing part is clampable between the upper housing part and the lower housing part; wherein the at least one bearing part is arranged at a distance from the lower housing part in a region of the at least one upper housing part extension; and wherein the clamping connection is provided when that at least one bearing part is braced between the upper housing part and the lower housing part.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0034] There are shown, respectively diagrammatically

[0035] FIG. 1 an example of a fresh air supply system according to the invention for an internal combustion engine of a motor vehicle,

[0036] FIG. 2 a detail illustration of FIG. 1 in the region of the bearing part,

[0037] FIG. 3 the housing with the upper housing part and the housing part and bearing part and shaft in an exploded illustration.

DETAILED DESCRIPTION

[0038] FIG. 1 shows an example of a fresh air supply system 1 according to the invention for an internal combustion engine of a motor vehicle. The fresh air supply system 1 comprises a housing 2, which has an upper housing part 4 and a lower housing part 5 and delimits a housing interior 3. The housing interior 3 forms a fresh air duct for air which is to be directed through the fresh air supply system 1. In the housing interior 3 a shaft 6 is mounted so as to be rotatably adjustable relative to the housing 2. The mounting of the shaft 6 takes place by means of a bearing part 7 which is likewise arranged in the housing interior 3. For this, the shaft 6 is arranged between the bearing part 7 and the lower housing part 5. The bearing part 7 is fastened to the housing 2 by means of a clamping connection and, for this, is braced between upper housing part 4 and lower housing part 5.

[0039] FIG. 1 shows a cross-section of the housing 2 perpendicularly to a rotation axis D of the shaft 6. In the cross-section of the housing 2 shown in FIG. 1, the bearing part 7 is configured in a pot-like manner with a pot base 9 and a pot collar 10 protruding from the pot base 9. For mounting the shaft 6, a recess 11 is present in the pot base 9 of the bearing part 7, in which recess the shaft 6 is held rotatably relative to the bearing part 7 and therefore also to the housing 2. In the cross-section, the pot base 9 faces the upper housing part 4, nevertheless preferably arranged at a distance thereto, and has a projection 12 protruding towards the lower housing part 5, in which projection said recess 11 is provided with the shaft 6.

[0040] In the cross-section of the housing 2 illustrated in FIG. 1, an extension 8 is formed on the upper housing part 4, protruding towards the lower housing part 5. By means of this extension 8, the bearing part 7 rests on the upper housing part 4 for the formation of the clamping connection or respectively for clamping between the upper housing part 4 and the lower housing part 5. On the other hand, the bearing part 7 is arranged at a distance from the lower housing part 5 in the region of the extension 8 formed on the upper housing part 4.

[0041] On the lower housing part 5, in turn, a lower housing part extension 13 is formed, protruding towards the bearing part 7, which lower housing part extension rests against the projection 12 of the pot base 9 of the bearing part 7 for the bracing of the bearing part 7 between the upper housing part 4 and the lower housing part 5, and, in so doing, closes the recess 11.

[0042] The pot base 9 of the bearing part 7 therefore rests by means of the projection 12 against the lower housing part extension 13 of the lower housing part 5. The pot collar 10 of the bearing part 7, on the other hand, is arranged at a distance from the lower housing part 5, but, in turn, rests against the extension 8 of the upper housing part 4. The pot base 9, as already mentioned, is preferably arranged at a distance from the upper housing part 4.

[0043] For the fixing of upper housing part 4 and lower housing part 5 to one another, the upper housing part 4 in the cross-section of FIGS. 1 and 2 has a flange portion 14 protruding radially outwards, away from the housing interior 3, which flange portion is welded to the lower housing part 5. The bearing part 7, on the other hand, is welded neither to the upper housing part 4 nor to the lower housing part 5.

[0044] Rather, the bracing/clamping, explained above, of the bearing part 7 between the upper housing part 4 and the lower housing part 5 is entirely sufficient for fixing the bearing part 7 in the housing interior 3.

[0045] FIG. 3 shows the housing 2 with the upper housing part 4 and the lower housing part 5 and with shaft 6 in an exploded illustration. In FIG. 3, the flaps 15 can be seen, fastened in a torque-proof manner to the shaft 6, of a flap mechanism of the fresh air supply system 1 formed of shaft 6 and flaps 15. Furthermore, it can be seen from FIG. 3 that the fresh air supply system 1 can have not only a single bearing part 7, but rather that several bearing parts 7 can be present, which are arranged at a distance and adjacent to one another along an axial direction A defined by the rotation axis D of the shaft 6. In FIG. 3, by way of example, two such bearing parts 7, arranged with respect to one another, are shown.

[0046] According to FIG. 3, in a top view onto an underside 17 of the upper housing part 4 facing the housing interior 3, several extensions 8 are arranged at a distance to one another. The extensions 8 are preferably configured in a pin-like manner. The extensions 8 are arranged on a first longitudinal side 18a and on a second longitudinal side 18b of the upper housing part 4 lying opposite the first longitudinal side 18a, and protrude away from the upper housing part 4 towards the bearing part 7. For each extension 8 formed on the upper housing part 4, a recess 19 is present on the bearing part 7, said recess being formed in a complementary manner to the extension 8, into which recess the respective extension 8 can engage.