COMPRESSOR INLET ADJUSTMENT MECHANISM
An adjustment mechanism variably adjusts the cross-section of a compressor inlet. The adjustment mechanism comprises a plurality of rotatable orifice elements and a transmission ring. Each orifice element has a plate body, a coupling element and a bearing pin. The transmission ring is mechanically coupled to the orifice elements via the coupling elements. One of the orifice elements is configured as a drive orifice element. The bearing pin of the drive orifice element is configured as an elongated bearing pin. The elongated bearing pin is configured longer than the bearing pins of the other orifice elements. Furthermore, the elongated bearing pin is adapted to be coupled to an actuation system such that when the drive orifice element is moved by the actuation system, movement is transmitted from the drive orifice element via the transmission ring to the other orifice elements.
This disclosure relates to an adjustment mechanism for adjusting the cross-section of a compressor inlet. Furthermore, the invention relates to an adjustment assembly, a compressor and a charging apparatus having such an adjustment mechanism.
BACKGROUNDThe individual mobility sector is experiencing a disruptive change. Especially, the increasing number of electric vehicles entering the market and stricter emission regulations of legislators demand higher efficiencies from traditional internal combustion engine ICE vehicles. Therefore, more and more vehicles are equipped with efficiency increasing measures, such as charging apparatuses and emission reduction devices. Well known are, for instance, charging apparatuses wherein a compressor may be driven by an e-motor (e-charger) and/or an exhaust gas powered turbine (turbocharger).
Common compressors thereby comprise a compressor housing and a compressor wheel which is arranged in the housing. In operation, air is sucked through a compressor inlet of the housing to get accelerated and compressed by the compressor wheel and then exits the compressor via a volute of the compressor housing. Each compressor has its characterizing compressor map defining its operating range. This operating range is mainly bound by the surge line and the choke line in the compressor map.
To further improve the efficiency of the ICE, it is well known to enhance the compressor map, e.g. by preventing surging, i.e. by taking measures to move the surge line to the left. This can be done, for example, by compressor inlet adjustment mechanisms. Common adjustment mechanisms are configured, for instance, to increase the speed of the air flow, to modify the flow angle or to establish a flow path recirculation. When it comes to increasing the speed of the air flow, it is known to reduce an inlet diameter of the compressor inlet by means of orifice elements which are moved by an actuation ring. The actuation ring itself is usually coupled to and moved by a plurality of intermediate elements, such as a lever assembly, to, i.e. by an actuator. These measures and elements typically require space, may increase the weight, may lead to increased manufacturing costs and may increase the need for maintenance due to wear.
Accordingly, the objective of the present invention is to provide an improved compressor inlet adjustment mechanism.
SUMMARYThe present invention relates to an adjustment mechanism as set out in claim 1. Furthermore, the present invention relates to a corresponding adjusting assembly, a compressor and a corresponding charging apparatus each including such an adjustment mechanism as set out in claims 5, 14 and 15, respectively. Other embodiments are described in the dependent claims.
The inventive adjustment mechanism for variably adjusting the cross-section of a compressor inlet comprises a plurality of rotatable orifice elements and a transmission ring. Each orifice element has a plate body, a coupling element and a bearing pin. The transmission ring is mechanically coupled to the plurality of orifice elements via the coupling elements. One of the orifice elements is configured as a drive orifice element. The bearing pin of the drive orifice element is configured as an elongated bearing pin. The elongated bearing pin is configured longer than the bearing pins of the other orifice elements. Furthermore, the elongated bearing pin is adapted to be coupled to an actuation system such that when the drive orifice element is moved by the actuation system, movement is transmitted from the drive orifice element via the transmission ring to the other orifice elements. The inventive configuration of the adjustment mechanism results in a different force flow in comparison to known adjustment mechanisms. The actuation force is led from an actuation system directly into the drive orifice element via rotation of the elongated bearing pin. Thereby the drive orifice element together with its coupling element can be pivoted. The coupling element of the drive orifice element in turn interacts with the transmission ring such that the transmission ring is rotated. Via the transmission ring force is transmitted from the drive orifice element to the other orifice elements thereby causing pivoting movement of the orifice elements to adjust the cross-section of a compressor inlet. The orifice elements are circumferentially distributed along the transmission ring. Optionally, the orifice elements may be configured and arranged such that they can contact respective adjacent orifice elements in a circumferential direction. Thereby, for instance the drive orifice element can push adjacent orifice elements during movement additionally to the force transmission through the transmission ring. The orifice elements being adjacent to the drive orifice element can in turn push respective adjacent orifice elements. Thereby a progression of direct force transmission from one orifice element to another orifice element can be accomplished. This auxiliary direct force transmission from the drive orifice element to its adjacent orifice elements (and further on) can improve the dynamics of the adjustment mechanism, particularly it can support the initial movement of the transmission ring. The inventive configuration of the drive orifice element can eliminate the need for a lever assembly or other intermediate parts as used in known systems. Consequently, this leads to less required parts, reduced space requirements, a better packaging and decreased manufacturing costs.
In one aspect of the adjustment mechanism, the bearing pin is arranged further radially outside on the respective orifice element than the coupling element. In particular, the bearing pin is arranged further radially outside on the plate body than the coupling element. Additionally or alternatively the coupling element is arranged in a radial middle portion of the respective orifice element. Additionally or alternatively the bearing pin is arranged in a radial outer portion of the respective orifice element. In particular, the bearing pin is arranged at a radial outer end of the respective orifice element. By arranging the bearing pin radially outside of the coupling element, the traveling distance of the respective coupling element relative to the transmission ring can be reduced. Thereby the potential wear of each coupling element and wear of the transmission ring can be reduced. Especially, an increasing distance between the coupling element and the respective bearing pin of one orifice element leads to a reduced relative movement between each coupling element and the transmission ring. Furthermore, by arranging the bearing pin radially outside the coupling element, i.e. farther away from the compressor axis in a radial outside direction, less rotation of the whole orifice element is required for moving the plate body between an opened and a closed position. This also results in less wear.
In another aspect, which is combinable with the previous aspect, the coupling element and the bearing pin may protrude directly from the plate body of the respective orifice element in an axial direction. In other words, the coupling element and the bearing pin are integrally formed with the plate body.
In another aspect, which is combinable with any one of the previous aspects, each orifice element may have an upstream surface and a downstream surface. The upstream surface points in a first axial direction to an upstream side. The downstream surface points in a second axial direction to a downstream side opposite the first axial direction.
In another aspect, which is combinable with the previous aspect, the coupling elements may extend from the upstream surface in the first axial direction. Alternatively, the coupling elements may extend from the downstream surface in the second axial direction.
Additionally or alternatively to the previous aspect, the transmission ring may be arranged axially adjacent the upstream surfaces or axially adjacent the downstream surfaces.
Additionally or alternatively to the previous aspect, the coupling elements and the transmission ring may be arranged on the same of one of the upstream side or the downstream side.
Additionally or alternatively to the previous aspect, the elongated bearing pin may always arranged on the upstream side. The elongated bearing pin may extend from the upstream surface in the first axial direction.
Additionally or alternatively to the previous aspect, the bearing pins of the other orifice elements may extend from the upstream surface in the first axial direction. Alternatively the bearing pins of the other orifice elements extend from the downstream surface in the second axial direction.
In another aspect, which is combinable with any one of the previous aspects, the transmission ring may have a plurality of circumferentially arranged recesses. Each coupling element may be operatively coupled to one respective recess. Additionally each recess may have a longitudinal shape extending in a substantially radial direction. Thereby, each coupling element can slide within the respective recess in a radial direction. Furthermore, movement between the transmission ring and the orifice elements can be transmitted in a circumferential direction.
In another aspect, which is combinable with any one of the previous aspects, the adjustment mechanism may further comprise a housing portion. Additionally, the housing portion may have a bore. Additionally, the elongated bearing pin may extend through the bore to be coupled to the actuation system outside the housing portion. Additionally, the housing portion may be an inlet port of a compressor defining the compressor inlet.
The present invention further relates to an adjustment assembly for variably adjusting the cross-section of a compressor inlet. The adjustment assembly comprises an adjustment mechanism of any one of the previous aspects. Furthermore, the adjustment assembly comprises an actuation system. The actuation system is configured to actuate the drive orifice element. That means the drive orifice element is operatively coupled to the actuation system. The actuation system may comprise a drive unit. The drive unit is configured as a rotatory drive unit. Additionally, a first geared structure may be arranged in a first end portion of the elongated bearing pin. Additionally, the adjustment assembly may further comprise a first geared element. The first geared element may be arranged at the first end portion and may comprise the first geared structure. The first geared element may be attached in a rotationally fixed manner to the first end portion. The first geared structure may be arranged on a radial surface of the elongated bearing pin or on a radial surface of the geared element, i.e. a surface pointing in a radial direction with respect to the elongated bearing pin. In embodiments comprising the first geared element, a length of the geared element in a radial direction with respect to the elongated bearing pin may be configured to place the actuation system closer or further away from the elongated bearing pin. In other words, by providing the first geared element a distance between the actuation system and the elongated bearing pin and/or the housing portion can be adjusted. This enables a flexible placement of the actuation system by adequately configuring the first geared element. Furthermore, the possibility is provided to use different actuation systems, for instance actuation systems of different sizes. In other words, the first geared structure can either be provided directly in the elongated bearing pin or in an additional element, i.e. the first geared element. If the first geared structure is directly formed on the elongated bearing pin, the first geared structure may optionally be arranged in a geared recess of the elongated bearing pin. The geared recess may be formed in an end face of the elongated bearing pin. Thereby the actuation system can directly be coupled to the elongated bearing pin in a very compact fashion. The actuation system can be arranged closer to the housing portion. Consequently, a more compact device can be provided.
In another aspect of the adjustment assembly, the first geared structure may extend at least along an arc length of a circular sector. Additionally, the circular sector may be defined by a central angle θ1 between 5° to 360°, preferably between 10° to 60° and in particular between 15° and 45°. By adapting the central angle θ1 smaller than 360° no full rotation is required. Furthermore, the manufacturing costs can be reduced as a smaller area needs to be provided in a geared configuration.
Additionally or alternatively to the previous aspect, the adjustment assembly may further comprise a second geared structure. The second geared structure may be formed complementary to the first geared structure and may be operatively coupled to the drive unit. Furthermore, the second geared structure may be engagingly coupled to the first geared structure in order to rotate the elongated bearing pin. In other words, the actuation system may comprise the second geared structure. Additionally, the adjustment assembly may further comprise a rotatable drive shaft. The rotatable drive shaft may be operatively coupled to the drive unit. That means the actuation system may comprise the rotatable drive shaft. Additionally, the second geared structure may directly be formed on the rotatable drive shaft. In particular, the second geared structure may directly be formed in a second shaft end portion of the rotatable drive shaft. If the second geared structure is directly formed on the rotatable drive shaft, the second geared structure may optionally be arranged in a geared recess of the rotatable drive shaft. The geared recess may be formed in a shaft end face of the rotatable drive shaft. Thereby the actuation system can directly be coupled to the elongated bearing pin in a very compact fashion. The actuation system can be arranged closer to the housing portion. Consequently, a more compact device can be provided. Alternatively to being directly formed on the rotatable drive shaft, the adjustment assembly, i.e. the actuation system may further comprise a second geared element which comprises the second geared structure. The second geared element may operatively be coupled to the drive unit. The second geared element may be arranged on the rotatable drive shaft. In particular, the second geared element may be arranged in a second shaft end portion of the rotatable drive shaft. Thereby the second geared element can be operatively coupled to the drive unit via the rotatable drive shaft. Additionally, the second geared element may be attached to the rotatable drive shaft in a rotationally fixed manner
In another aspect of the adjustment assembly which is combinable with the previous aspect, the second geared structure may extend at least along an arc length of a circular sector. Additionally, the circular sector may be defined by a central angle θ2 between 5° to 360°, preferably between 10° to 60° and in particular between 15° and 45°.
Alternatively to the previous aspect, the second geared element is configured as a gear rack.
The present invention further relates to a compressor of a charging apparatus. The compressor comprises a compressor housing, an impeller and an adjustment assembly of any one of the previous aspects. The compressor housing defines a compressor inlet and a compressor outlet. The impeller is rotatably mounted in the compressor housing between the compressor inlet and the compressor outlet. Additionally, if the adjustment mechanism comprises a housing portion, the housing portion is part of the compressor housing. Furthermore, the housing portion forms the compressor inlet. In other words, the housing portion serves as inlet port of the compressor. Thereby, the housing portion may be attached to the compressor housing. The housing portion may be arranged upstream of the impeller.
The present invention further relates charging apparatus. The charging apparatus comprises a compressor drive unit and a compressor of any one of the previous aspects. The compressor is rotationally coupled to the compressor drive unit via a shaft.
In one aspect of the charging apparatus, the compressor drive unit may comprise a turbine. Additionally or alternatively the compressor drive unit may comprise an electric motor.
In the context of this invention, the expressions axially, axial or axial direction is meant to be a direction parallel of or along an axis, i.e. rotational axis, of the transmission ring. When the adjustment mechanism is mounted in a compressor housing, the axial direction also substantially coincides with an axis of the compressor, i.e. with a rotation axis of the compressor wheel. Thus, with reference to the figures, see, especially
With reference to
Again with reference to
With further reference to
As depicted in
The coupling element 110 and the bearing pin 120, 120′ directly protrude from the plate body 130 of the respective orifice element 100, 100′ generally in an axial direction 22. In the illustrated embodiments the bearing elements 120, 120′ extend in the first axial direction 22a from the plate body 130 of the respective orifice element 100, 100′. In other words, the coupling element 110 and the bearing pin 120, 120′ are integrally formed with the respective plate body 130 of one orifice element 100, 100′. The coupling elements 110 extend in the second axial direction 22b from the plate body 130 of the respective orifice element 100, 100′. The transmission ring 210 is arranged axially adjacent the downstream surfaces 134 of the orifice elements 100, 100′. In other words, the transmission ring 210 is arranged axially adjacent the downstream surfaces 134 of the plate bodies 130. The transmission ring 210 has a plurality of circumferentially arranged recesses 212 (see
As depicted in
The present invention further relates to an adjustment assembly 30 for variably adjusting the cross-section 312a of a compressor inlet 312 (see
With reference to
When the first geared structure 142 is provided directly in the elongated bearing pin 120′, it is arranged in a first end portion 122′ of the elongated bearing pin 120′. The first geared structure 142 may be configured as an external toothing (see
With reference to
With reference to
When the second geared structure 242 is provided directly in the rotatable drive shaft 232, it is arranged in the second shaft end portion 235 of the rotatable drive shaft 232. That means, the second geared structure 242 is directly formed on the rotatable drive shaft 232 (see
Also when having a second geared element 240, the second geared structure 242 may be configured as an external toothing (see
In general, various combinations of the first geared structure 142 and/or the first geared element 140 and the second geared structure 242 and/or the second geared element 240 are possible. For instance, the first geared structure 142 according to the embodiment of
Analogously to the first geared structure 142, the second geared structure may extend only along an arc length 244a of a circular sector 244 (see
With reference to
It should be understood that the present invention can also (alternatively) be defined in accordance with the following embodiments:
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- 1. An adjustment mechanism (10) for variably adjusting the cross-section 312a of a compressor inlet (312) comprising:
- a plurality of rotatable orifice elements (100, 100′) each having a plate body (130), a coupling element (110) and a bearing pin (120, 120′); and
- a transmission ring (210) mechanically coupled to the plurality of orifice elements (100) via the coupling elements (110);
- wherein
- one of the orifice elements (100, 100′) is configured as a drive orifice element (100′) whose bearing pin (120′) is configured as an elongated bearing pin (120′) being longer than the bearing pins (120) of the other orifice elements (100), wherein the elongated bearing pin (120′) is adapted to be coupled with an actuation system (230),
- such that when the drive orifice element (100′) is moved by the actuation system (230), movement is transmitted from the drive orifice element (100′) via the transmission ring (210) to the other orifice elements (100).
- 2. The adjustment mechanism (10) of embodiment 1, wherein the bearing pin (120, 120′) is arranged further radially outside on the respective orifice element (100, 100′), in particular on the plate body (130) than the coupling element (110).
- 3. The adjustment mechanism (10) of any one of the previous embodiments, wherein the coupling element (110) and the bearing pin (120, 120′) protrude directly from the plate body (130) of the respective orifice element (100, 100′) in an axial direction (22).
- 4. The adjustment mechanism (10) of any one of the previous embodiments, wherein the coupling element (110) is arranged in a radial middle portion (136) of the respective orifice element (100, 100′) wherein the bearing pin (120, 120′) is arranged in a radial outer portion (138), in particular at an radial outer end (138a) of the respective orifice element (100, 100′).
- 5. The adjustment mechanism (10) of any one of the previous embodiments, wherein each orifice element (100, 100′) has an upstream surface (132) and a downstream surface (134), wherein the upstream surface (132) points in a first axial direction (22a) to an upstream side (132a) and wherein the downstream surface (134) points in a second axial direction (22b) to a downstream side (134a) opposite the first axial direction (22a).
- 6. The adjustment mechanism (10) of embodiment 5, wherein the coupling elements (110) extend from the upstream surface (132) in the first axial direction (22a) or from the downstream surface (134) in the second axial direction (22b).
- 7. The adjustment mechanism (10) of any one of embodiments 5 or 6, wherein the transmission ring (210) is arranged axially adjacent the upstream surfaces (132) or axially adjacent the downstream surfaces (134).
- 8. The adjustment mechanism (10) of any one of embodiments 5 to 7, wherein the coupling elements (110) and the transmission ring (210) are arranged on the same of one of the upstream side (132a) or the downstream side (134a).
- 9. The adjustment mechanism (10) of any one of embodiments 5 to 8, wherein the elongated bearing pin (120′) is always arranged on the upstream side (132a) and extends from the upstream surface (132) in the first axial direction (22a).
- 10. The adjustment mechanism (10) of any one of embodiments 5 to 9, wherein the bearing pins (120) of the other orifice elements (100) extend from the upstream surface (132) in the first axial direction (22a) or from the downstream surface (134) in the second axial direction (22b).
- 11. The adjustment mechanism (10) of any one of the previous embodiments, wherein the transmission ring (210) has a plurality of circumferentially arranged recesses (212), wherein each coupling element (110) is operatively coupled with one respective recess (212).
- 12. The adjustment mechanism (10) of embodiment 5, each recess (212) has a longitudinal shape extending in a substantially radial direction (24) such that each coupling element (110) can slide within the respective recess (212) in a radial direction (22) and such that movement between the transmission ring (210) and the orifice elements (100, 100′) can be transmitted in a circumferential direction (26).
- 13. The adjustment mechanism (10) of any one of the previous embodiments, further comprising a housing portion (220), optionally having a bore (222), and optionally, wherein the elongated bearing pin (120′) extends through the bore (222) to be coupled with the actuation system (230) outside the housing portion (220).
- 14. The adjustment mechanism (10) of embodiment 13, wherein the housing portion (220) is an inlet port of a compressor (300) defining the compressor inlet (312).
- 15. An adjustment assembly (30) for variably adjusting the cross-section 312a of a compressor inlet (312), comprising:
- an adjustment mechanism (10) of any one of the previous embodiments; and
- an actuation system (230) to actuate the drive orifice element (100′), wherein the actuation system (230) is coupled to the elongated bearing pin (120′) and, optionally, wherein the actuation system (230) comprises a drive unit (234), in particular, wherein the drive unit (234) is rotatory.
- 16. The adjustment assembly (30) of embodiment 15, wherein a first geared structure (142) is arranged in a first end portion (122′) of the elongated bearing pin (120′).
- 17. The adjustment assembly (30) of embodiment 16, further comprising a first geared element (140) arranged at the first end portion (122′) and comprising the first geared structure (142).
- 18. The adjustment assembly (30) of embodiment 16, wherein the first geared structure (142) is directly formed on the elongated bearing pin (120′), and optionally, wherein a geared recess (146) is formed in an end face (122a′) of the elongated bearing pin (120′) and, wherein the geared recess (146) comprises the first geared structure (142).
- 19. The adjustment assembly (30) of any one of embodiments 16 to 18, wherein the first geared structure (142) extends at least along an arc length (144a) of a circular sector (144), and optionally, wherein the circular sector (144) is defined by a central angle θ1 between 5° to 360°, preferably between 10° to 60° and in particular between 15° and 45°.
- 20. The adjustment assembly (30) of any of embodiments 16 to 19, further comprising a second geared structure (242) which is formed complementary to the first geared structure (142) and which is operatively coupled with the drive unit (234), wherein the second geared structure (242) is engagingly coupled with the first geared structure (142) in order to rotate the elongated bearing pin (120′).
- 21. The adjustment assembly (30) of embodiment 20, further comprising a rotatable drive shaft (232) being operatively coupled with the drive unit (234).
- 22. The adjustment assembly (30) of embodiment 21, wherein the second geared structure (242) is directly formed on the rotatable drive shaft (232), in particular in a second shaft end portion (235) of the rotatable drive shaft (232), and optionally, wherein a geared recess (246) is formed in a shaft end face (235a) of the rotatable drive shaft (232) and, wherein the geared recess (246) comprises the second geared structure (242).
- 23. The adjustment assembly (30) of any one of embodiments 20 or 21, further comprising a second geared element (240) operatively coupled with the drive unit (234) and comprising the second geared structure (242).
- 24. The adjustment assembly (30) of embodiment 23, if dependent on embodiment 21, wherein second geared element (240) is arranged on the rotatable drive shaft (232), in particular in a second shaft end portion (235) of the rotatable drive shaft (232) in order to be operatively coupled with the drive unit (234) via the rotatable drive shaft (232).
- 25. The adjustment assembly (30) of any one of embodiments 20 to 24, wherein the second geared structure (242) extends at least along an arc length (244a) of a circular sector (244), and optionally, wherein the circular sector (244) is defined by a central angle θ2 between 5° to 360°, preferably between 10° to 60° and in particular between 15° and 45°.
- 26. The adjustment assembly (30) of any one of embodiments 23 or 24, wherein second geared element (240) is configured as a gear rack.
- 27. The adjustment assembly (30) of any one of embodiments 15 or 16, 18 to 22 wherein the actuation system (230) is directly coupled with the elongated bearing pin (120′) of the drive orifice element (100′).
- 28. A compressor (300) of a charging apparatus (400), the compressor comprising:
- a compressor housing (310) having a compressor inlet (312) and a compressor outlet (314);
- an impeller (320) rotatably mounted in the compressor housing (310) between the compressor inlet (312) and the compressor outlet (314); and
- an adjustment assembly (30) of any one of the previous embodiments.
- 29. The compressor (300) of embodiment 28, if dependent on embodiment 13, wherein the compressor housing (310) comprises the housing portion (220), and wherein the housing portion (220) forms the compressor inlet (312).
- 30. A charging apparatus (400) comprising:
- a compressor drive unit (410); and
- a compressor (300) of any one of the previous embodiments which is rotationally coupled to the compressor drive unit (410) via a shaft (420).
- 31. The charging apparatus (400) of embodiment 30, wherein the compressor drive unit (410) comprises a turbine and/or an electric motor.
- 1. An adjustment mechanism (10) for variably adjusting the cross-section 312a of a compressor inlet (312) comprising:
Claims
1. An adjustment mechanism (10) for variably adjusting the cross-section (312a) of a compressor inlet (312), the adjustment mechanism (10) comprising:
- a plurality of rotatable orifice elements (100, 100′) each having a plate body (130), a coupling element (110) and a bearing pin (120, 120′); and
- a transmission ring (210) mechanically coupled to the plurality of orifice elements (100) via the coupling elements (110);
- wherein
- one of the orifice elements (100, 100′) is configured as a drive orifice element (100′) whose bearing pin (120′) is configured as an elongated bearing pin (120′) being longer than the bearing pins (120) of the other orifice elements (100), wherein the elongated bearing pin (120′) is adapted to be coupled with an actuation system (230),
- such that when the drive orifice element (100′) is moved by the actuation system (230), movement is transmitted from the drive orifice element (100′) via the transmission ring (210) to the other orifice elements (100).
2. The adjustment mechanism (10) of claim 1, wherein the coupling element (110) is arranged in a radial middle portion (136) of the respective orifice element (100, 100′), and wherein the bearing pin (120, 120′) is arranged in a radial outer portion (138) of the respective orifice element (100, 100′).
3. The adjustment mechanism (10) of claim 1, wherein each orifice element (100, 100′) has an upstream surface (132) and a downstream surface (134), wherein the upstream surface (132) points in a first axial direction (22a) to an upstream side (132a) and wherein the downstream surface (134) points in a second axial direction (22b) to a downstream side (134a) opposite the first axial direction (22a).
4. The adjustment mechanism (10) of claim 1, further comprising a housing portion (220) having a bore (222), wherein the elongated bearing pin (120′) extends through the bore (222) to be coupled with the actuation system (230) outside the housing portion (220).
5. An adjustment assembly (30) for variably adjusting the cross-section (312a) of a compressor inlet (312), the adjustment assembly (30) comprising:
- the adjustment mechanism (10) of claim 1; and
- an actuation system (230) to actuate the drive orifice element (100′), wherein the actuation system (230) is coupled to the elongated bearing pin (120′).
6. The adjustment assembly (30) of claim 5, further comprising a first geared structure (142) arranged in a first end portion (122′) of the elongated bearing pin (120′).
7. The adjustment assembly (30) of claim 6, further comprising a first geared element (140) arranged at the first end portion (122′) and comprising the first geared structure (142).
8. The adjustment assembly (30) of claim 6, wherein the first geared structure (142) is directly formed on the elongated bearing pin (120′).
9. The adjustment assembly (30) of claim 6, wherein the first geared structure (142) extends at least along an arc length (144a) of a circular sector (144).
10. The adjustment assembly (30) of claim 6, further comprising a second geared structure (242) which is formed complementary to the first geared structure (142) and which is operatively coupled with the drive unit (234), wherein the second geared structure (242) is engagingly coupled with the first geared structure (142) in order to rotate the elongated bearing pin (120′).
11. The adjustment assembly (30) of claim 10, wherein the second geared structure (242) is directly formed on the rotatable drive shaft (232).
12. The adjustment assembly (30) of claim 10, further comprising a second geared element (240) operatively coupled with the drive unit (234) and comprising the second geared structure (242).
13. The adjustment assembly (30) of claim 5, wherein the actuation system (230) is directly coupled with the elongated bearing pin (120′) of the drive orifice element (100′).
14. A compressor (300) of a charging apparatus (400), the compressor (300) comprising:
- a compressor housing (310) having a compressor inlet (312) and a compressor outlet (314);
- an impeller (320) rotatably mounted in the compressor housing (310) between the compressor inlet (312) and the compressor outlet (314); and
- the adjustment assembly (30) of claim 5.
15. A charging apparatus (400) comprising:
- a compressor drive unit (410); and
- the compressor (300) of claim 14 which is rotationally coupled to the compressor drive unit (410) via a shaft (420).
16. The adjustment mechanism (10) of claim 3, wherein the elongated bearing pin (120′) is always arranged on the upstream side (132a) and extends from the upstream surface (132) in the first axial direction (22a).
17. The adjustment assembly (30) of claim 5, wherein the actuation system (230) comprises a drive unit (234) that is rotatory.
18. The adjustment assembly (30) of claim 8, wherein a geared recess (146) is formed in an end face (122a′) of the elongated bearing pin (120′), and wherein the geared recess (146) comprises the first geared structure (142).
19. The adjustment assembly (30) of claim 9, wherein the circular sector (144) is defined by a central angle θ1 between 5° to 360°.
20. The adjustment assembly (30) of claim 11, wherein a geared recess (246) is formed in a shaft end face (235a) of the rotatable drive shaft (232), and wherein the geared recess (246) comprises the second geared structure (242).
Type: Application
Filed: Mar 10, 2020
Publication Date: Oct 1, 2020
Inventors: Aleksandar Vuletic (Kirchheimbolanden), Jason Walkingshaw (Heidelberg), Sascha Karstadt (Undenheim), Oliver Weber (Enkenbach-Alsenborn), Alexander Sperle (Mannheim)
Application Number: 16/814,389