WO2019222315A1 - Valve assembly for a charging device - Google Patents

Valve assembly for a charging device Download PDF

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Publication number
WO2019222315A1
WO2019222315A1 PCT/US2019/032366 US2019032366W WO2019222315A1 WO 2019222315 A1 WO2019222315 A1 WO 2019222315A1 US 2019032366 W US2019032366 W US 2019032366W WO 2019222315 A1 WO2019222315 A1 WO 2019222315A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
valve assembly
lever arm
valve
assembly according
Prior art date
Application number
PCT/US2019/032366
Other languages
French (fr)
Inventor
Jakob Penth
Christoph Mueller
Christian Cossmann
Alexander UMLAUFF
Werner Rott
Florian Rapp
Georg Scholz
Original Assignee
Borgwarner Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Borgwarner Inc. filed Critical Borgwarner Inc.
Publication of WO2019222315A1 publication Critical patent/WO2019222315A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/68—Closing members; Valve seats; Flow passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
    • F02B37/183—Arrangements of bypass valves or actuators therefor
    • F02B37/186—Arrangements of actuators or linkage for bypass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the valve assembly according to the invention comprises a spindle, a lever arm coupled to the spindle, and a valve disk.
  • the valve disk is coupled to the spindle via the lever arm in such a way that the valve disk is tiltable about a first axis and about a second axis. Due to the coupling according to the invention of the valve disk to the spindle, the valve disk may tilt about two axes with respect to the spindle. This leads to an improved sealing effect, which in turn leads to a higher efficiency of the valve assembly and a corresponding exhaust gas turbocharger comprising a valve assembly according to the invention. In addition, wear in the valve assembly and in the area of a valve seat may be advantageously compensated by a free possibility of movement of this type.
  • the lever arm may be mounted on the spindle to be rotatable about the second axis.
  • the spindle may have a bearing region in which the lever arm is mounted to be rotatable about the second axis.
  • the bearing region may have a bearing passage and the lever arm may extend through the bearing passage and may be mounted therein to be rotatable about the second axis.
  • a locking washer may be arranged on the second end of the lever arm. The locking washer may be welded or riveted to the lever arm.
  • the spindle may be arranged in a through passage in the turbine housing.
  • a sleeve may be provided between the spindle and the turbine housing for mounting the spindle.
  • valve assembly may be a wastegate assembly.
  • valve assembly may be part of a bypass assembly.
  • FIG. 2 shows a top view of the valve assembly according to the invention from Figure 1;
  • valve assembly 10 may be advantageously compensated by a free possibility of movement of this type. Deposited combustion residues, thermal deformations of the turbine housing, and a corresponding corrosion layer occurring over time may also be correspondingly compensated in the area of valve assembly 10 or of the valve seat.
  • the robustness of valve assembly 10 is increased as a whole, by which means the life cycle of valve assembly 10 or of the turbocharger may be correspondingly increased.
  • Valve assembly 10 according to the invention may be used, for example, in a wastegate for a turbine of a single- stage charging device or in a bypass arrangement of a turbine for a multi-stage charging device.
  • Bearing pin 400 has a collar 410 on a first end.
  • a locking washer 420 is arranged on a second end of bearing pin 400, see Figures 1, 2, and 4.
  • bearing pin 400 may thus be pushed through bearing blocks 210 and through passage 310.
  • locking washer 420 bearing pin 400 is secured in this position, wherein a very little play is provided between bearing pin 400 and bearing blocks 210.
  • a rotation about first axis 610 this remains possible without causing noise ("rattling"). Wear in this area may thus also be kept low.
  • the valve assembly according to the invention consequently enables a simple assembly at high assembly quality and thus product quality.
  • Locking washer 420 may be welded or riveted to bearing pin 400.
  • the valve assembly according to Embodiment 3 characterized in that the lever arm (300) has a through passage (310) in the area of the first end and additionally is provided with a bearing pin (400) which extends through the through passage (310) in order to couple the lever arm (300) to the valve disk (200) to be rotatable about the first axis (610). 5.
  • the valve assembly according to Embodiment 4 characterized in that two bearing blocks (210) are provided on the valve disk (200) separated in the direction of the first axis (610), wherein the first end of the lever arm (300) is arranged between the two bearing blocks (210) and the bearing pin (400) extends through both bearing blocks (210) and through the through passage (310).
  • (420) is arranged on a second end.
  • a first stop is designed in particular as an edge element (312) on the first end of the lever arm (300) and interacts with a surface of the valve disk (200) or, if provided, with the damping element (500) in order to limit a tilting in a first direction about the first axis (610).
  • a second stop is arranged, in particular, as an edge element (314) on the lever arm (300) spaced apart from the first stop in such a way that a tilting is limited in a second direction about the first axis (610).
  • at least one third stop is provided which limits a tilting of the valve disk (200) about the second axis (620).
  • a valve assembly (10) according to any one of the preceding embodiments.
  • 21. The turbine arrangement according to Embodiment 20, characterized in that the spindle (100) is arranged in a through passage in the turbine housing, in particular wherein a sleeve is provided between spindle and turbine housing for mounting the spindle (100).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)

Abstract

The invention relates to a valve assembly (10) for a charging device, in particular for a wastegate of an exhaust gas turbocharger, comprising a spindle (100), a lever arm (300) coupled to the spindle (100), and a valve disk (200). The valve disk (200) is coupled to the spindle (100) via the lever arm (300) in such a way that the valve disk (200) can be tilted about a first axis (610) and about a second axis (620).

Description

VALVE ASSEMBLY FOR A CHARGING DEVICE Cross-Reference to Related Applications
[0001] This application claims the benefit of German Patent Application No. 102018207901.3 filed May 18, 2018, the disclosure of which is herein incorporated by reference in its entirety.
Field of the Invention
[0002] The present invention relates to a valve assembly for a charging device, a turbine with a corresponding valve assembly and also a charging device.
Background Information
[0003] Single-stage and multi-stage charging devices, mostly two-stage charging are used in the area of the system components of the engine and turbocharger. Valve assemblies are used both in single-stage and also in multi-stage charging devices, for example, to guide fluids (exhaust gases or fresh air) through a bypass channel or to seal the same. In single-stage charging systems, valve assemblies are used, for example, as wastegate valves in order to be able to adapt the operating range of the charging device to the changing operating ranges of the internal combustion engine. In certain operating states, it may thus be necessary to reduce or to control the drive energy acting on the compressor.
[0004] A two-stage charging device comprises, for example, two exhaust gas turbochargers (a larger, low-pressure EGT and a smaller, high-pressure EGT). At lower engine speeds, the high-pressure turbocharger guarantees a fast boost pressure and thus a dynamic start, whereas the large, low-pressure turbocharger is used at higher engine speeds and is responsible for the high end output as a low- pressure stage. Bypasses, which are equipped with valve assemblies, thereby ensure an adjustment of the supercharging at the engine operating points on the compressor- and on the turbine sides.
[0005] In known valve assemblies, the valve flap is most often directly coupled to a shaft, which is mounted in a sleeve or directly in a housing. The high wear, which is caused by the high number of actuations, the large forces that occur, and the high temperatures caused in this area, are problematic in these types of valve arrangements. On the other hand, the sealing effect of these types of valve assemblies are most often not satisfactory due to the operating circumstances, for example, wear, deposits, and corrosion.
[0006] The goal of the present invention is correspondingly to provide an optimized valve assembly, which provides an improved sealing effect at simultaneously low wear.
Brief Summary of the Invention
[0007] The present invention relates to a valve assembly for a charging device according to Claim 1, a turbine arrangement according to Claim 14, and a charging device according to Claim 15.
[0008] The valve assembly according to the invention comprises a spindle, a lever arm coupled to the spindle, and a valve disk. The valve disk is coupled to the spindle via the lever arm in such a way that the valve disk is tiltable about a first axis and about a second axis. Due to the coupling according to the invention of the valve disk to the spindle, the valve disk may tilt about two axes with respect to the spindle. This leads to an improved sealing effect, which in turn leads to a higher efficiency of the valve assembly and a corresponding exhaust gas turbocharger comprising a valve assembly according to the invention. In addition, wear in the valve assembly and in the area of a valve seat may be advantageously compensated by a free possibility of movement of this type. Deposited combustion residues, thermal deformations of the turbine housing, and a corresponding corrosion layer occurring over time may also be correspondingly compensated in the area of the valve assembly or of the valve seat. Thus, the robustness of the valve assembly is increased as a whole, by which means the life cycle of the valve assembly or of the turbocharger may be correspondingly increased.
[0009] In embodiments, the first axis and the second axis may be arranged substantially perpendicular to each other.
[0010] In embodiments, which may be combined with all previously described embodiments, the valve disk may have at least one bearing block which extends from a surface of the valve disk, wherein the lever arm is mounted in the at least one bearing block in the area of a first end to be rotatable about the first axis. The lever arm may have a through passage in the area of the first end. In addition, a bearing pin may be provided, which extends through the through passage in order to couple the lever arm to the valve disk to be rotatable about the first axis. Two bearing blocks may be provided on the valve disk spaced apart in the direction of the first axis, wherein the first end of the lever arm is arranged between the two bearing blocks and the bearing pin extends through both bearing blocks and through the through passage. The bearing pin may have a collar on a first end and a locking washer may be arranged on the second end of the bearing pin. The locking washer may be welded or riveted to the bearing pin.
[0011] In configurations which are combinable with all previously described configurations, a damping element may be provided between the lever arm and the valve disk. The damping element may be configured as a leaf spring or as a small metal plate.
[0012] In configurations, which are combinable with all previously described configurations, the lever arm may be mounted on the spindle to be rotatable about the second axis. The spindle may have a bearing region in which the lever arm is mounted to be rotatable about the second axis. The bearing region may have a bearing passage and the lever arm may extend through the bearing passage and may be mounted therein to be rotatable about the second axis. A locking washer may be arranged on the second end of the lever arm. The locking washer may be welded or riveted to the lever arm.
[0013] In embodiments, which may be combined with all previously described embodiments, at least one stop may be provided, which limits a tilting of the valve disk about the first axis. A first stop is designed on the first end of the lever arm and interacts with a surface of the valve disk or, if provided, with the damping element in order to limit a tilting in a first direction about the first axis. The first stop may be designed, in particular, as an edge element. A second stop, which is designed, in particular, as an edge element, may be arranged on the lever arm spaced apart from the first stop in such a way that a tilting is limited in a second direction about the first axis.
[0014] In embodiments, which may be combined with all previously described embodiments, at least one third stop may be provided, which limits a tilting of the valve disk about the second axis. The third stop may be configured as a projection on the bearing region of the spindle and interacts with a surface of the valve disk or, if provided, with the damping element, in order to limit a tilting in a first and a second direction about the second axis.
[0015] Another general advantage of the previously described embodiments of valve assembly according to the invention consists in that the different components may be used in the same configuration for different applications. It may thus be provided that only the size of the valve disk is correspondingly adapted to smaller and larger valve assemblies or to turbines, in which the corresponding valve assemblies are provided. The remaining components (bearing pin, lever arm, spindle, ...) may remain the same for the different applications. Development and production synergies thus develop which may significantly reduce costs.
[0016] The invention additionally comprises a turbine arrangement for a charging device with a turbine housing, a turbine wheel arranged in the turbine housing, and a valve assembly according to any one of the previously described embodiments.
[0017] In embodiments of the turbine arrangement, the spindle may be arranged in a through passage in the turbine housing. In particular, a sleeve may be provided between the spindle and the turbine housing for mounting the spindle.
[0018] In embodiments of the turbine arrangement, the valve assembly may be a wastegate assembly. Alternatively, the valve assembly may be part of a bypass assembly.
[0019] The invention additionally comprises a charging device for an internal combustion engine with a turbine arrangement according to any one of the preceding embodiments.
[0020] Additional details and features of the invention are described by way of the following figures.
Brief Description of the Drawings
Figure 1 shows an isometric view of the valve assembly according to the invention according to an exemplary embodiment;
Figure 2 shows a top view of the valve assembly according to the invention from Figure 1;
Figure 3 shows a first sectional view of the valve assembly according to the invention from Figure 1;
Figure 4 shows a second sectional view of the valve assembly according to the invention from Figure 1.
Detailed Description of the Invention [0021] In the following, exemplary embodiments of the valve assembly 10 according to the invention and the turbine according to the invention and the charging device according to the invention are described by way of the figures.
[0022] In general, and thus referring to all Figures 1 through 4, see, for example, Figure 1, valve assembly 10 according to the invention comprises a spindle 100, a lever arm 300 coupled to spindle 100, and a valve disk 200. Valve disk 200 is coupled to spindle 100 via lever arm 300 in such a way that valve disk 200 is tiltable about a first axis 610 and about a second axis 620, see Figure 2. Due to the coupling according to the invention of valve disk 200 to spindle 100, valve disk 200 may tilt about two axes with respect to spindle 100. This leads to an improved sealing effect, which in turn leads to a higher efficiency of valve assembly 10 and a corresponding exhaust gas turbocharger comprising a valve assembly 10 according to the invention. In addition, wear in valve assembly 10 and in the area of a valve seat may be advantageously compensated by a free possibility of movement of this type. Deposited combustion residues, thermal deformations of the turbine housing, and a corresponding corrosion layer occurring over time may also be correspondingly compensated in the area of valve assembly 10 or of the valve seat. Thus, the robustness of valve assembly 10 is increased as a whole, by which means the life cycle of valve assembly 10 or of the turbocharger may be correspondingly increased. Valve assembly 10 according to the invention may be used, for example, in a wastegate for a turbine of a single- stage charging device or in a bypass arrangement of a turbine for a multi-stage charging device.
[0023] As is very clear in Figure 2, first axis 610 and second axis 620 are arranged substantially perpendicular to each other. [0024] In the exemplary embodiment shown in Figures 1 through 4, valve disk
200 has two bearing blocks 210, which are spaced apart in the direction of first axis 610 and extend from a surface of valve disk 200. A first end of lever arm 300 is arranged between the two bearing blocks 210, and lever arm 300 is mounted in bearing blocks 210 in the area of the first end to be rotatable about first axis 610. Axis 610 is thereby arranged in the example to be perpendicular to the longitudinal axis of lever arm 300, see Figures 2 and 4. Lever arm 300 has a through passage 310 in the area of a first end for this purpose. A bearing pin 400 extends through both bearing blocks 210 and through through passage 310 in order to couple lever arm 300 to valve disk 200 to be rotatable about first axis 610. Bearing pin 400 has a collar 410 on a first end. A locking washer 420 is arranged on a second end of bearing pin 400, see Figures 1, 2, and 4. During assembly, bearing pin 400 may thus be pushed through bearing blocks 210 and through passage 310. By applying locking washer 420, bearing pin 400 is secured in this position, wherein a very little play is provided between bearing pin 400 and bearing blocks 210. Advantageously, a rotation about first axis 610 this remains possible without causing noise ("rattling"). Wear in this area may thus also be kept low. The valve assembly according to the invention consequently enables a simple assembly at high assembly quality and thus product quality.
[0025] Locking washer 420 may be welded or riveted to bearing pin 400.
[0026] As is clear in Figure 3, a damping element 500 may be provided between lever arm 300 and valve disk 200. Damping element 500 may absorb kinetic energy which is introduced into valve assembly 10 from external forces. Thus, noise is reduced (less thumping or rattling noise) and wear is reduced in this area. Damping element 500 may be configured as a leaf spring or as a small metal plate. The leaf spring or the small metal plate may be arranged, for example, on the upper side of valve disk 200 between the two bearing blocks 210 and pressed, caulked, clipped in, soldered, welded, riveted, or held there another way, for example, pushed into two grooves.
[0027] The rotatable mounting about second axis 620 is subsequently described in particular with reference to Figures 3 and 4. Lever arm 300 is mounted on spindle 100 to be rotatable about second axis 620. Second axis 620 is thereby arranged parallel to the longitudinal axis of lever arm 300, see Figure 4. Spindle 100 has a bearing region 110 in which lever arm 300 is mounted to be rotatable about second axis 620. Bearing region 110 and spindle 100 are preferably configured as an integral component. Bearing region 110 provides a bearing passage 112. Lever arm 300 extends through bearing passage 112. In other words, the lever arm is mounted in bearing passage 112 to be rotatable about second axis 620.
[0028] As is very clear in Figures 1 and 4, a locking washer 320 is arranged on a second end of lever arm 300. Lever arm 300 may thus be pushed through bearing passage 112 during assembly. By applying locking washer 320, lever arm 300 is secured in this position, wherein very little play is provided between lever arm 300 and spindle 100. Advantageously and analogously to the arrangement of bearing pin 400 in lever arm 300, a rotation of lever arm 300 about second axis 610 remains possible through an arrangement of this type, without disturbing noises ("rattling"). Wear in this area may thus also be kept low. [0029] Locking washer 320 may be welded or riveted to lever arm 300.
[0030] In addition, the valve assembly may be provided with a stop or a plurality of stops, which limit a tilting of valve disk 200 about first axis 610. A first stop is designed on the first end of lever arm 300 and interacts with a surface of valve disk 200 or, as in the exemplary embodiment of Figures 1 through 4, with damping element 500 in order to limit a tilting in a first direction about first axis 610. As is very clear in Figure 3, the first stop is designed as edge element 312. A second stop, which is likewise designed as edge element 314 (see Figure 3), is arranged on lever arm 300 spaced apart from the first stop in such a way that a tilting is limited in a second direction about first axis 610.
[0031] In addition, at least one third stop may be provided which limits a tilting of valve disk 200 about second axis 620. The third stop is configured in Figures 1, 3, and 4 as projection 114 on bearing region 110 of spindle 100 and interacts with a surface of valve disk 200 or, as in the exemplary embodiment shown, with damping element 500, in order to limit a tilting in a first and a second direction about second axis 620. The third stop may also be used to limit a tilting in the second direction about first axis 610. Then, for example, the second stop (edge element 314) on lever arm 300 might be omitted.
[0032] Another general advantage of all of the previously described embodiments of valve assembly 10 according to the invention consists in that the different components may be used in the same configuration for different applications. It may thus be provided that only the size of valve disk 200 is correspondingly adapted to smaller and larger valve assemblies 10 or to turbines, in which corresponding valve assemblies 10 are provided. The remaining components (bearing pin, lever arm, spindle, ...) may remain the same for the different applications. Development and production synergies thus develop which may significantly reduce costs.
[0033] The invention additionally comprises a turbine arrangement for a charging device with a turbine housing, a turbine wheel arranged in the turbine housing, and a valve assembly 10 according to any one of the previously described embodiments. Spindle 100 is arranged in a through passage in the turbine housing. In particular, a sleeve may be provided between the spindle and the turbine housing for mounting spindle 100.
[0034] The turbine arrangement may be provided for a charging device, wherein valve assembly 10 is part of a wastegate assembly. Alternatively, valve assembly 10 may be part of a bypass assembly. In this case, a second turbine housing and a second turbine wheel may be provided in the second turbine housing, for example, for a multi-stage exhaust gas turbocharger. The bypass assembly then functions for bypassing one of the turbine stages of the multi-stage exhaust gas turbocharger. The previously described valve assembly 10 may also correspondingly be part of a bypass between corresponding compressor stages of the multi-stage exhaust gas turbocharger.
[0035] The invention additionally comprises a charging device for an internal combustion engine with a turbine arrangement according to any one of the preceding exemplary embodiments. The charging device may additionally comprise an actuator for actuating valve assembly 10. The actuator may be, for example, a pneumatic actuator, a hydraulic actuator, or an electric actuator. The actuator may be, for example, connected via an actuator rod and a lever to an outer end of spindle 100.
Although the present invention has been described and is defined in the attached claims, it should be understood that the invention may also be alternatively defined according to the following embodiments: 1. A valve assembly (10) for a charging device, in particular for a wastegate of an exhaust gas turbocharger, comprising
a spindle (100);
a lever arm (300) coupled to the spindle (100); and
a valve disk (200);
characterized in that the valve disk (200) is coupled to the spindle (100) via the lever arm (300) in such a way that the valve disk (200) is tiltable about a first axis (610) and about a second axis (620).
The valve assembly according to Embodiment 1, characterized in that the first axis (610) and the second axis (620) are arranged essentially perpendicular to each other.
3. The valve assembly according to Embodiment 1 or Embodiment 2, characterized in that the valve disk (200) has at least one bearing block (210) which extends from a surface of the valve disk (200), wherein the lever arm (300) is mounted in the area of a first end in the at least one bearing block (210) to be rotatable about the first axis (610).
The valve assembly according to Embodiment 3, characterized in that the lever arm (300) has a through passage (310) in the area of the first end and additionally is provided with a bearing pin (400) which extends through the through passage (310) in order to couple the lever arm (300) to the valve disk (200) to be rotatable about the first axis (610). 5. The valve assembly according to Embodiment 4, characterized in that two bearing blocks (210) are provided on the valve disk (200) separated in the direction of the first axis (610), wherein the first end of the lever arm (300) is arranged between the two bearing blocks (210) and the bearing pin (400) extends through both bearing blocks (210) and through the through passage (310).
6. The valve assembly according to Embodiment 5, characterized in that the bearing pin (400) has a collar (410) at a first end and a locking washer
(420) is arranged on a second end.
7. The valve assembly according to Embodiment 6, characterized in that the locking washer (420) is welded or riveted to the bearing pin (400).
8. The valve assembly according to any one of the preceding embodiments, characterized in that a damping element (500) is provided between the lever arm (300) and the valve disk (200). 9. The valve assembly according to Embodiment 8, characterized in that the damping element (500) is configured as a leaf spring or as a small metal plate.
10. The valve assembly according to any one of the preceding embodiments, characterized in that the lever arm (300) is mounted on the spindle (100) to be rotatable about the second axis (620).
11. The valve assembly according to Embodiment 10, characterized in that the spindle (100) has a bearing region (110) in which the lever arm (300) is mounted to be rotatable about the second axis (620).
12. The valve assembly according to Embodiment 11, characterized in that the bearing region (110) has a bearing passage (112) and the lever arm (300) extends through the bearing passage (112) and is mounted therein to be rotatable about the second axis (620).
13. The valve assembly according to Embodiment 12, characterized in that a locking washer (320) is arranged on a second end of the lever arm (300). 14. The valve assembly according to Embodiment 13, characterized in that the locking washer (320) is welded or riveted to the bearing pin (300). 15. The valve assembly according to any one of the preceding embodiments, characterized in that at least one stop is provided which limits a tilting of the valve disk (200) about the first axis (610).
16. The valve assembly according to Embodiment 15, characterized in that a first stop is designed in particular as an edge element (312) on the first end of the lever arm (300) and interacts with a surface of the valve disk (200) or, if provided, with the damping element (500) in order to limit a tilting in a first direction about the first axis (610). 17. The valve assembly according to Embodiment 16, characterized in that a second stop is arranged, in particular, as an edge element (314) on the lever arm (300) spaced apart from the first stop in such a way that a tilting is limited in a second direction about the first axis (610). 18. The valve assembly according to any one of the preceding embodiments, characterized in that at least one third stop is provided which limits a tilting of the valve disk (200) about the second axis (620).
19. The valve assembly according to Embodiment 18, characterized in that the third stop is configured as a projection (114) on the bearing region (110) of the spindle (100) and interacts with a surface of the valve disk (200) or, if present, with the damping element (500) in order to limit a tilting in a first and a second direction about the second axis (620). 20. A turbine arrangement for a charging device comprising
a turbine housing;
a turbine wheel arranged in the turbine housing; and
a valve assembly (10) according to any one of the preceding embodiments. 21. The turbine arrangement according to Embodiment 20, characterized in that the spindle (100) is arranged in a through passage in the turbine housing, in particular wherein a sleeve is provided between spindle and turbine housing for mounting the spindle (100).
22. The turbine arrangement according to Embodiment 20 or Embodiment 21, characterized in that the valve assembly is part of a wastegate assembly. 23. The turbine arrangement according to Embodiment 20 or Embodiment 21, characterized in that the valve assembly is part of a bypass assembly.
24. A charging device for an internal combustion engine comprising a turbine arrangement according to any one of Embodiments 20 through 23.

Claims

Claims
1. A valve assembly (10) for a charging device, in particular for a wastegate of an exhaust gas turbocharger, comprising
a spindle (100);
a lever arm (300) coupled to the spindle (100); and
a valve disk (200);
characterized in that the valve disk (200) is coupled to the spindle (100) via the lever arm (300) in such a way that the valve disk (200) is tiltable about a first axis (610) and about a second axis (620).
2. The valve assembly according to Claim 1, characterized in that the first axis (610) and the second axis (620) are arranged essentially perpendicular to each other.
3. The valve assembly according to Claim 1 or Claim 2, characterized in that the valve disk (200) has at least one bearing block (210) which extends from a surface of the valve disk (200), wherein the lever arm (300) is mounted in the area of a first end in the at least one bearing block (210) to be rotatable about the first axis (610).
4. The valve assembly according to Claim 3, characterized in that the lever arm (300) has a through passage (310) in the area of the first end and additionally is provided with a bearing pin (400) which extends through the through passage (310) in order to couple the lever arm (300) to the valve disk (200) to be rotatable about the first axis (610).
5. The valve assembly according to Claim 4, characterized in that two bearing blocks (210) are provided on the valve disk (200) separated in the direction of the first axis (610), wherein the first end of the lever arm (300) is arranged between the two bearing blocks (210) and the bearing pin (400) extends through both bearing blocks (210) and through the through passage (310).
6. The valve assembly according to any one of the preceding claims, characterized in that a damping element (500) is provided between the lever arm (300) and the valve disk (200); in particular wherein the damping element (500) is configured as a leaf spring or as a small metal plate. 7. The valve assembly according to any one of the preceding claims, characterized in that the lever arm (300) is mounted on the spindle (100) to be rotatable about the second axis (620).
8. The valve assembly according to Claim 7, characterized in that the spindle (100) has a bearing region (110) in which the lever arm (300) is mounted to be rotatable about the second axis (620).
9. The valve assembly according to Claim 8, characterized in that the bearing region (110) has a bearing passage (112) and the lever arm (300) extends through the bearing passage (112) and is mounted therein to be rotatable about the second axis (620).
10. The valve assembly according to any one of the preceding claims, characterized in that at least one stop is provided which limits a tilting of the valve disk (200) about the first axis (610).
11. The valve assembly according Claim 10, characterized in that a first stop is designed, in particular, as an edge element (312) on the first end of the lever arm (300) and interacts with a surface of the valve disk (200) or, if provided, with the damping element (500) in order to limit a tilting in a first direction about the first axis (610); and optionally characterized in that a second stop is arranged, in particular, as an edge element (314) on the lever arm (300) spaced apart from the first stop in such a way that a tilting is limited in a second direction about the first axis (610).
12. The valve assembly according to any one of the preceding claims, characterized in that at least one third stop is provided which limits a tilting of the valve disk (200) about the second axis (620).
13. The valve assembly according to Claim 12, characterized in that the stop, which limits a tilting of the valve disk (200) about the second axis (620), is configured as a projection (114) on the bearing region (110) of the spindle
(100) and interacts with a surface of the valve disk (200) or, if present, with the damping element (500) in order to limit a tilting in a first and a second direction about the second axis (620). 14. A turbine arrangement for a charging device comprising
a turbine housing;
a turbine wheel arranged in the turbine housing; and
a valve assembly (10) according to any one of the preceding claims. 15. A charging device for an internal combustion engine comprising a turbine arrangement according to Claim 14.
PCT/US2019/032366 2018-05-18 2019-05-15 Valve assembly for a charging device WO2019222315A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018207901.3 2018-05-18
DE102018207901 2018-05-18

Publications (1)

Publication Number Publication Date
WO2019222315A1 true WO2019222315A1 (en) 2019-11-21

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Application Number Title Priority Date Filing Date
PCT/US2019/032366 WO2019222315A1 (en) 2018-05-18 2019-05-15 Valve assembly for a charging device

Country Status (1)

Country Link
WO (1) WO2019222315A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2508730A2 (en) * 2011-03-14 2012-10-10 Honeywell International Inc. Wastegates and wastegate components
DE102011077626A1 (en) * 2011-06-16 2012-12-20 Bosch Mahle Turbo Systems Gmbh & Co. Kg Wastegate valve device
WO2017066167A1 (en) * 2015-10-16 2017-04-20 Borgwarner Inc. Bypass valve for turbocharger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2508730A2 (en) * 2011-03-14 2012-10-10 Honeywell International Inc. Wastegates and wastegate components
DE102011077626A1 (en) * 2011-06-16 2012-12-20 Bosch Mahle Turbo Systems Gmbh & Co. Kg Wastegate valve device
WO2017066167A1 (en) * 2015-10-16 2017-04-20 Borgwarner Inc. Bypass valve for turbocharger

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