Supercharger assembly and vehicle
By using mesh-shaped damping washers in the turbocharger assembly, the problems of high turbocharger vibration and noise and easy damage to components have been solved, achieving the effects of reducing noise and extending component life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHERY AUTOMOBILE CO LTD
- Filing Date
- 2026-01-31
- Publication Date
- 2026-04-21
AI Technical Summary
When a turbocharger in a turbocharged engine uses a floating bearing, the rotation of the floating bearing causes the oil film to vibrate, resulting in significant vibration noise and a high risk of resonance, which can damage components along the transmission path.
A grid-shaped shock-absorbing washer is used, which is fitted onto the connection between the turbocharger housing and the heat shield to form an elastic connection, buffering vibration energy and avoiding resonance and stress concentration.
It reduces vibration and noise, decreases the risk of the heat shield breaking due to resonance, and extends the service life of components.
Smart Images
Figure CN121897455A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of engine technology, and in particular to a turbocharger assembly and vehicle. Background Technology
[0002] Turbocharged engines offer numerous advantages, including significantly improved power performance, better fuel economy, and compliance with stricter emission standards, which is why they are widely used in automobiles.
[0003] When a turbocharger in a turbocharged engine uses a floating bearing, the rotation of the floating bearing will cause oil film vibration. The oil film vibration is amplified in the transmission path, resulting in greater vibration noise and resonance, which can easily damage components in the transmission path. Summary of the Invention
[0004] This application provides a turbocharger assembly and a vehicle. It solves the problems of excessive vibration and noise, and the easy damage to components along the transmission path caused by vibration, in related technologies. The technical solution is as follows: On one hand, embodiments of this application provide a turbocharger assembly, including: a turbocharger housing, a heat shield, fasteners, and a shock absorption unit; The turbocharger housing has a first connection hole; The heat shield is located outside the turbocharger housing and covers at least a portion of the turbocharger housing; the heat shield has a second connection hole that communicates with the first connection hole; The fastener includes: a limiting part and a connecting part; the limiting part is fixedly connected to one end of the connecting part, and the other end of the connecting part passes through the second connecting hole and is connected to the first connecting hole; The damping unit includes two mesh-shaped damping washers; both damping washers are sleeved on the connecting part, and in the axial direction of the connecting part, one damping washer is located between the heat insulation cover and the turbocharger housing, and the other damping washer is located between the heat insulation cover and the limiting part.
[0005] In some possible implementations, the damping washer includes: a plurality of first plate portions and a plurality of second plate portions; The surfaces of the first plate and the second plate intersect, and the first plate and the second plate are connected at the intersection. The plurality of first plates and the plurality of second plates can form a plurality of grid holes. The plurality of mesh holes are arranged in parallel and all penetrate the damping washer along a first direction, which is parallel to the radial direction of the damping washer.
[0006] In some possible implementations, the damping washer has multiple main load-bearing portions on either side in the axial direction; the edge of a first plate portion and the edge of a second plate portion on the same side are connected to form one of the main load-bearing portions; Each of the main load-bearing parts extends along the first direction, and the plurality of main load-bearing parts provided on the same side of the damping washer are distributed at intervals along the second direction; the second direction is perpendicular to the first direction and parallel to the radial direction of the damping washer.
[0007] In some possible implementations, for the plurality of main load-bearing parts provided on any side of the damping washer in the axial direction, the plurality of main load-bearing parts include: at least two first main load-bearing parts and at least two second main load-bearing parts; in the second direction, at least one second main load-bearing part is distributed on one side of the at least two first main load-bearing parts, and at least one second main load-bearing part is also distributed on the other side of the at least two first main load-bearing parts; The first main load-bearing part is divided into two sections in the first direction by the area enclosed by the shock-absorbing washer; the second main load-bearing part is continuously arranged in the first direction.
[0008] In some possible implementations, the damping washer is further provided with two first auxiliary load-bearing parts on either side of the axial direction, and each of the first auxiliary load-bearing parts extends along the first direction; Among them, for the shock-absorbing washer, multiple main bearing parts and two first auxiliary bearing parts are provided on any side in the axial direction. The multiple main bearing parts are distributed between the two first auxiliary bearing parts in the second direction, and one first auxiliary bearing part is the edge of a first plate part, and the other first auxiliary bearing part is the edge of a second plate part.
[0009] In some possible implementations, the damping washer has at least one second auxiliary load-bearing portion on either side of the second direction, and the edge of one of the first plate portions and the edge of the second plate portion on the same side are connected to form a second auxiliary load-bearing portion; in the axial direction of the damping washer, the at least one second auxiliary load-bearing portion is located between two first auxiliary load-bearing portions; Each of the second auxiliary load-bearing parts extends along the first direction.
[0010] In some possible implementations, the plurality of mesh holes are arrayed along the axial direction of the damping washer and the second direction to form at least two first mesh hole layers and at least one second mesh hole layer; the first mesh hole layer includes a plurality of first mesh holes arranged along the second direction; the second mesh hole layer includes a plurality of second mesh holes arranged along the second direction. In the axial direction of the damping washer, the at least two first mesh hole layers and the at least one second mesh hole layer are arranged alternately; for an adjacent first mesh hole layer and a second mesh hole layer, in the second direction, the plurality of first mesh holes in a first mesh hole layer and the plurality of second mesh holes in a second mesh hole layer are arranged alternately.
[0011] In some possible implementations, the cross-section of the mesh hole is rhomboid; Wherein, for two first mesh holes that are adjacent to each other in the axial direction of the damping washer, one corner of one first mesh hole is diagonally opposite to one corner of the other first mesh hole.
[0012] In some possible implementations, the damping unit further includes: an inner bushing and a gasket; The inner liner is fitted onto the connecting part, and the inner liner includes: a sleeve body, and a support piece fixedly connected to one end of the sleeve body; the support piece abuts against the turbocharger housing, and the gasket is fitted onto the sleeve body and disposed opposite to the support piece; Both of the shock-absorbing washers are sleeved on the sleeve body, and in the axial direction of the sleeve body, one shock-absorbing washer is sandwiched between the heat insulation cover and the support plate, and the other shock-absorbing washer is sandwiched between the heat insulation cover and the gasket; the side of the gasket away from the shock-absorbing washer abuts against the limiting part.
[0013] On the other hand, embodiments of this application provide a vehicle that integrates the aforementioned supercharger assembly.
[0014] The beneficial effects of the technical solutions provided in this application include at least the following: Both damping washers are fitted onto the connecting part. Axially, one damping washer is located between the heat shield and the turbocharger housing, while the other is located between the heat shield and the limiting part. Vibration from the turbocharger housing is transmitted to the heat shield after passing through the damping washers. The mesh-like damping washers form a well-buffered elastic connection. Vibration from the turbocharger housing is buffered by the elastic deformation of the damping washers, reducing the transmission of vibration energy to the heat shield and thus preventing resonance. This reduces the risk of the heat shield breaking due to resonance and also reduces turbocharger oil film noise. Furthermore, the damping washers allow the heat shield to shift due to vibration, avoiding stress concentration and reducing the risk of vibration fatigue cracking failure of the heat shield. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of a turbocharger assembly provided in an embodiment of this application.
[0017] Figure 2 This is a cross-sectional view of a turbocharger assembly provided in an embodiment of this application.
[0018] Figure 3 yes Figure 2 An enlarged schematic diagram of the structure at point A in the middle.
[0019] Figure 4 This is a schematic diagram of the structure of a damping washer in a turbocharger assembly provided in this application embodiment. Figure 1 .
[0020] Figure 5 This is a schematic diagram of the structure of a damping washer in a turbocharger assembly provided in this application embodiment. Figure 2 .
[0021] Figure label: 000, Turbocharger assembly; 100. Turbocharger housing; K1. First connection hole; 200, heat shield; K2, second connection hole; 300. Fastener; 301. Limiting part; 302. Connecting part; 400, vibration damping unit; 410, Vibration damping washer; K0, Washer hole; 411, First plate section; 412, Second plate section; W0, Mesh hole; C1, First mesh hole layer; W1, First mesh hole; W11, Corner section; C2, Second mesh hole layer; W2, Second mesh hole; 413, Main load-bearing section; 413a, First main load-bearing section; 413b, Second main load-bearing section; S1, Load-bearing plane; 414, First auxiliary load-bearing section; 415, Second auxiliary load-bearing section; 420. Inner liner; 421. Sleeve body; 421a. Annular protrusion; 422. Support plate; 430. Gasket; S2. Beveled surface; 500, Turbine; 600, Compressor; 700, Shaft; 800, Cylinder Head; 900, Pre-catalyst; X, first direction; Y, second direction; Z, axial direction of the damping washer. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0023] This application provides a turbocharger assembly. Figure 1 This is a schematic diagram of a turbocharger assembly provided in an embodiment of this application. Figure 2 This is a cross-sectional view of a turbocharger assembly provided in an embodiment of this application. Figure 3 yes Figure 2 An enlarged schematic diagram of the structure at point A. (See diagram below.) Figures 1-3 As shown, the turbocharger assembly 000 may include: a turbocharger housing 100, a heat shield 200, fasteners 300, and a shock absorber unit 400.
[0024] The turbocharger housing 100 may have a first connection hole K1. Here, the turbocharger housing 100 typically serves as the skeleton of the turbocharger, supporting and protecting key internal components. Exemplarily, when the turbocharger is a turbine 500 turbocharger, the turbocharger housing 100 provides support and protection for the turbine 500, shaft 700, and impeller inside the turbine 500 turbocharger. Here, the first connection hole K1 is used for connecting the turbocharger housing 100 to other components. Exemplarily, the first connection hole K1 can be a blind hole located on the outer surface of the turbocharger housing 100; a blind hole helps ensure the strength and sealing of the turbocharger housing 100.
[0025] A heat shield 200 is located outside the turbocharger housing 100 and covers at least a portion of the turbocharger housing 100. The heat shield 200 may have a second connection hole K2, which communicates with a first connection hole K1. Here, the heat shield 200 is used to insulate against the extremely high heat generated during turbocharger operation, thereby protecting other components in the engine compartment and optimizing the turbocharger's own performance. The second connection hole K2 is used for connecting the heat shield 200 to the turbocharger housing 100. Exemplarily, the second connection hole K2 may be a through-hole extending through the heat shield 200.
[0026] The fastener 300 may include a limiting part 301 and a connecting part 302. The limiting part 301 is fixedly connected to one end of the connecting part 302, and the other end of the connecting part 302 passes through the second connecting hole K2 and connects to the first connecting hole K1. In this way, after the connecting part 302 passes through the heat insulation cover 200, it connects to the turbocharger housing 100, and the limiting part 301 abuts against the side of the heat insulation cover 200 away from the turbocharger housing 100, thereby achieving a fixed connection of the heat insulation cover 200 to the turbocharger housing 100. For example, the fastener 300 may be a bolt with external threads, and the first connecting hole K1 has internal threads, with the external threads of the bolt threadedly connected to the internal threads of the first connecting hole K1.
[0027] The damping unit 400 may include two mesh-shaped damping washers 410. Both damping washers 410 are fitted onto the connecting portion 302, and axially along the connecting portion 302, one damping washer 410 is located between the heat insulation cover 200 and the turbocharger housing 100, while the other damping washer 410 is located between the heat insulation cover 200 and the limiting portion 301. Thus, during turbocharger operation, the vibrations generated in the turbocharger housing 100 are transmitted to the heat insulation cover 200 via two paths: one is sequentially transmitted along the path of the turbocharger housing 100, the damping washer 410 between the turbocharger housing 100 and the heat insulation cover 200, and then back to the heat insulation cover 200; the other is sequentially transmitted along the path of the turbocharger housing 100, the fastener 300, the damping washer 410 between the limiting portion 301 and the heat insulation cover 200, and then back to the heat insulation cover 200. Regardless of the transmission path, the vibration from the turbocharger housing 100 is transmitted to the heat shield 200 after passing through the damping washer 410.
[0028] The mesh-like damping washer 410 has multiple meshes, which provide good elasticity. Between the heat shield 200 and the booster housing, the mesh-like damping washer 410 forms a well-buffered elastic connection. Vibrations from the booster housing 100 are buffered by the elastic deformation of the damping washer 410, reducing the transmission of vibration energy to the heat shield 200 and preventing resonance in the heat shield 200. This reduces the risk of the heat shield 200 breaking due to resonance and also reduces booster oil film noise. Furthermore, the damping washer 410 allows the heat shield 200 to displace due to vibration, avoiding stress concentration and reducing the risk of vibration fatigue cracking failure of the heat shield 200. For example, the mesh washer is made of a high-temperature resistant elastic material (such as stainless steel).
[0029] In summary, the mesh-like damping washers have multiple meshes, which provide good elasticity. Both damping washers are fitted onto the connection part, with one washer positioned between the heat shield and the turbocharger housing, and the other between the heat shield and the limiting part, axially along the connection. Vibrations from the turbocharger housing are transmitted to the heat shield after passing through the damping washers. The mesh-like damping washers form a well-buffered elastic connection; vibrations from the turbocharger housing are buffered by the elastic deformation of the washers, reducing the transmission of vibration energy to the heat shield and thus preventing resonance, reducing the risk of heat shield rupture due to resonance, and also reducing turbocharger oil film noise. Furthermore, the damping washers allow the heat shield to displace due to vibration, avoiding stress concentration and reducing the risk of vibration fatigue cracking failure of the heat shield.
[0030] In some possible implementations, the damping washer 410 may include a plurality of first plate portions 411 and a plurality of second plate portions 412. The plate surfaces of the first plate portions 411 and the second plate portions 412 intersect, and the first plate portions 411 and the second plate portions 412 are connected at the intersection. The plurality of first plate portions 411 and the plurality of second plate portions 412 can form a plurality of grid holes W0. That is, the first plate portions 411 and the second plate portions 412 are cross-connected to form a plurality of grid holes W0, and the hole walls of the grid holes W0 are the plate surfaces of the first plate portions 411 and the second plate portions 412. In this way, when the damping washer 410 is subjected to force, the grid holes W0 will deform with the magnitude of the applied force. The hole walls of the grid holes W0 have high structural strength, can withstand large forces, and provide large elasticity.
[0031] Multiple mesh holes W0 are arranged in parallel and all penetrate the damping washer 410 along the first direction X, which is parallel to the radial direction of the damping washer 410. In this way, the mesh holes W0 can deform in a direction perpendicular to the first direction X, such as deforming the mesh holes W0 in the axial direction Z of the damping washer 410, thereby achieving elastic deformation of the damping washer 410 in the axial direction.
[0032] For example, a plurality of first plate portions 411 are distributed parallel to each other and spaced apart along the second direction Y, and a plurality of second plate portions 412 are distributed parallel to each other and spaced apart along the second direction Y. The first plate portions 411 and the second plate portions 412 are intersected and connected to each other to form a plurality of mesh holes W0.
[0033] Figure 4 This is a schematic diagram of the structure of a shock-absorbing washer 410 in a turbocharger assembly 000 provided in this application embodiment. Figure 1 ; Figure 5 This is a schematic diagram of the structure of a shock-absorbing washer 410 in a turbocharger assembly 000 provided in this application embodiment. Figure 2 .
[0034] like Figure 4 and Figure 5 As shown, in some possible implementations, the damping washer 410 has multiple main load-bearing portions 413 on either side of the axial direction. The edge of a first plate portion 411 and the edge of a second plate portion 412 on the same side are connected to form a main load-bearing portion 413. That is, multiple main load-bearing portions 413 are distributed on both sides of the damping washer 410 along the Z-axis. Thus, the main load-bearing portions 413 are formed by connecting the first plate portion 411 and the second plate portion 412. The main load-bearing portions 413 have high structural strength, and on either side of the damping washer 410 in the axial direction, multiple main load-bearing portions 413 can jointly bear the force, thereby improving the structural strength of the damping washer 410 and enabling it to provide greater elastic force.
[0035] Each main load-bearing part 413 extends along the first direction X, and multiple main load-bearing parts 413 arranged on the same side of the damping washer 410 are distributed at intervals along the second direction Y. The second direction Y is perpendicular to the first direction X and parallel to the radial direction of the damping washer 410.
[0036] like Figure 4 and Figure 5 As shown, in some possible implementations, for the damping washer 410, a plurality of main load-bearing portions 413 are provided on any one side in the axial direction. The plurality of main load-bearing portions 413 may include at least two first main load-bearing portions 413a and at least two second main load-bearing portions 413b. In the second direction Y, at least one second main load-bearing portion 413b is distributed on one side of the at least two first main load-bearing portions 413a, and at least one second main load-bearing portion 413b is also distributed on the other side of the at least two first main load-bearing portions 413a.
[0037] The first main load-bearing portion 413a is divided into two segments in the first direction X by the area enclosed by the damping washer 410. The second main load-bearing portion 413b is continuously arranged in the first direction X. Here, the area between the two segments of the first main load-bearing portion 413a is the washer hole K0 enclosed by the damping washer 410, through which the fastener 300 can pass. In this way, the structural strength of the damping washer 410 around the washer hole K0 can be strengthened by at least two first main load-bearing portions 413a and at least two second main load-bearing portions 413b distributed on both sides, enabling the damping washer 410 to provide greater elastic force.
[0038] In some embodiments, the first main load-bearing portion 413a and the second main load-bearing portion 413b have a load-bearing plane S1 perpendicular to the axial direction Z of the damping washer 410 on the side opposite to the damping washer 410. The damping washer 410 can contact the structures on both sides of the damping washer 410 through the load-bearing plane S1. The load-bearing plane S1 can reduce stress concentration on the first main load-bearing portion 413a and the second main load-bearing portion 413b of the damping washer 410, thereby improving the reliability of the damping washer 410.
[0039] like Figure 4 and Figure 5 As shown, in some possible implementations, the damping washer 410 is provided with two first auxiliary load-bearing parts 414 on either side of the axial direction, and each first auxiliary load-bearing part 414 extends along the first direction X.
[0040] The damping washer 410 has multiple main load-bearing portions 413 and two first auxiliary load-bearing portions 414 arranged on either side of the axial direction. The main load-bearing portions 413 are distributed between the two first auxiliary load-bearing portions 414 in the second direction Y. One first auxiliary load-bearing portion 414 is the edge of a first plate portion 411, and the other first auxiliary load-bearing portion 414 is the edge of a second plate portion 412. In this way, the edges of the first plate portion 411 and the second plate portion 412 form two first auxiliary load-bearing portions 414 on both sides of the multiple main load-bearing portions 413, thereby forming elastic support points in the edge region of the damping washer 410.
[0041] like Figure 4 and Figure 5 As shown, in some possible implementations, the damping washer 410 has at least one second auxiliary load-bearing portion 415 on either side in the second direction Y. The edge of a first plate portion 411 and the edge of a second plate portion 412 on the same side are connected to form a second auxiliary load-bearing portion 415. In the axial direction Z of the damping washer 410, at least one second auxiliary load-bearing portion 415 is located between two first auxiliary load-bearing portions 414. Thus, the second auxiliary load-bearing portion 415 can improve the structural strength of the damping washer 410 at the edge position and enhance the reliability of the first auxiliary load-bearing portions 414. Each second auxiliary load-bearing portion 415 extends along the first direction X.
[0042] like Figure 4 and Figure 5 As shown, in some possible implementations, a plurality of mesh holes W0 are arrayed along the axial direction Z and the second direction Y of the damping washer 410, forming at least two first mesh hole layers C1 and at least one second mesh hole layer C2. The first mesh hole layer C1 may include a plurality of first mesh holes W1 arranged along the second direction Y. The second mesh hole layer C2 may include a plurality of second mesh holes W2 arranged along the second direction Y.
[0043] In this design, along the axial direction Z of the damping washer 410, at least two first mesh hole layers C1 and at least one second mesh hole layer C2 are alternately arranged. For an adjacent first mesh hole layer C1 and a second mesh hole layer C2, along the second direction Y, a plurality of first mesh holes W1 in one first mesh hole layer C1 and a plurality of second mesh holes W2 in one second mesh hole layer C2 are alternately arranged. Thus, the at least three-layer structure formed by at least two first mesh hole layers C1 and at least one second mesh hole layer C2 can improve the axial elasticity of the damping washer 410; moreover, the alternating arrangement of the plurality of first mesh holes W1 in the first mesh hole layer C1 and the plurality of second mesh holes W2 in the second mesh hole layer C2 along the second direction Y can uniformly distribute the elasticity of the damping washer 410 along the second direction Y.
[0044] like Figure 4 and Figure 5 As shown, in some possible implementations, the cross-section of the mesh hole W0 is rhomboid. Specifically, for two adjacent first mesh holes W1 distributed along the axial Z of the damping washer 410, a corner W11 of one first mesh hole W1 is diagonally opposite to a corner W11 of the other first mesh hole W1. This rhomboid mesh hole W0 structure is stable, and the diagonal distribution of a corner W11 of one first mesh hole W1 to a corner W11 of the other first mesh hole W1 along the axial Z of the damping washer 410 improves the elasticity of the damping washer 410.
[0045] For example, when the first plate portion 411 and the second plate portion 412 are both arranged along the second direction Y, the first plate portion 411 and the second plate portion 412 are both inclined in the second direction Y. Moreover, the inclination direction of the first plate portion 411 and the inclination direction of the second plate portion 412 are opposite and thus cross-connected, forming a corner portion W11 that is diagonally distributed in the axial direction Z of the damping washer 410.
[0046] In some embodiments, for any rhomboid mesh hole W0, the two opposite corners W11 of the mesh hole W0 in the axial direction of the damping washer 410 are obtuse angles, and the two opposite corners W11 of the mesh hole W0 in the second direction Y are acute angles. The axial dimension of the mesh hole W0 is smaller than the axial dimension of the mesh hole W0 in the second direction Y. When the axial dimension of the damping washer 410 is fixed, more layers of the first mesh hole layer C1 and the second mesh hole layer C2 can be arranged along the axial direction of the damping washer 410, thereby enhancing the elasticity of the damping washer 410 with a limited thickness.
[0047] In some embodiments, the damping washer 410 can be a mirror-symmetric structure in the axial direction Z, the first direction X, and the second direction Y. In this way, the structural strength and elastic force of the damping washer 410 in the mirror image can remain the same, which is beneficial to the uniform stress on the damping washer 410 and improves the structural reliability of the damping washer 410.
[0048] Understandably, depending on the different structures, weights, and assembly methods of the heat shield 200, the optimal buffering and vibration isolation effect can be achieved by adjusting the density of multiple mesh holes W0.
[0049] like Figure 2 and Figure 3As shown, in some possible implementations, the damping unit 400 may further include an inner bushing 420 and a gasket 430. The inner bushing 420 is sleeved on the connecting portion 302, and the inner bushing 420 may include a sleeve body 421 and a support piece 422 fixedly connected to one end of the sleeve body 421. The support piece 422 abuts against the turbocharger housing 100, and the gasket 430 is sleeved on the sleeve body 421 and disposed opposite to the support piece 422. Exemplarily, the support piece 422 is a flanged structure that protrudes outward from one end of the sleeve body 421 in the axial direction.
[0050] In some embodiments, the gasket 430 is fitted onto the end of the sleeve 421 away from the support plate 422 and is interference-fitted with the end of the sleeve 421. The end of the sleeve 421 away from the support plate 422 has an annular protrusion 421a that bends outwards, and the inner annular edge of the gasket 430 has a chamfered surface S2 facing away from the turbocharger housing 100. When the gasket 430 is fitted onto the end of the sleeve 421, the annular protrusion 421a near the support plate 422 abuts against the chamfered surface S2 of the gasket 430, thereby constraining the gasket 430 onto the inner bushing 420 and giving the gasket 430 the function of pressing against the shock-absorbing washer 410. Exemplarily, the annular protrusion 421a has a chamfered surface that fits tightly against the chamfered surface S2.
[0051] Two damping washers 410 are fitted onto the sleeve body 421. Axially, one damping washer 410 is sandwiched between the heat insulation cover 200 and the support plate 422, while the other damping washer 410 is sandwiched between the heat insulation cover 200 and the gasket 430. The side of the gasket 430 facing away from the damping washer 410 abuts against the limiting part 301. Here, the inner bushing 420 passes through the second connecting hole K2 and through the heat insulation cover 200. The inner bushing 420 can act as a buffer between the heat insulation cover 200 and the fastener 300, improving the buffering effect and reducing oil film noise. The damping washer 410 is fitted onto the sleeve body 421 of the inner bushing 420. The sleeve body 421 provides axial positioning for the damping washer 410, the support plate 422 provides axial positioning for the damping washer 410, and the gasket 430 provides axial positioning for the damping washer 410.
[0052] like Figure 2 As shown, the supercharger assembly 000 may further include: a turbine 500, a compressor wheel 600, and a shaft 700 located within the supercharger housing 100. The turbine 500 and the compressor wheel 600 are located in different chambers. The turbine 500 is connected to one end of the shaft 700, and the compressor wheel 600 is connected to the other end of the shaft 700. Exhaust gas from the engine can drive the turbine 500 to rotate, and the turbine 500 drives the compressor wheel 600 to compress the air via the shaft 700. The compressed gas is then delivered to the engine cylinders.
[0053] like Figure 1As shown, the turbocharger assembly 000 may further include a pre-catalyst 900. The pre-catalyst 900 may be connected downstream of the turbocharger. Exhaust gas from the engine's exhaust manifold flows to the pre-catalyst 900 after passing through the turbocharger. The pre-catalyst 900 is used to perform preliminary oxidation and reduction purification of harmful components in the exhaust gas.
[0054] like Figure 1 As shown, in some embodiments, the number of fasteners 300, damping units 400, first connecting holes K1, and second connecting holes K2 can all be multiple and correspond one-to-one. Multiple first connecting holes K1 are distributed at different locations. The multiple fasteners 300 and multiple damping units 400 cooperate to achieve a fixed connection between the heat shield 200 and the turbocharger housing 100 at multiple locations, ensuring the reliability of the connection between the turbocharger housing 100 and the heat shield 200. This also reduces the vibration noise radiated from the turbocharger assembly 000 and lowers the risk of damage to the heat shield 200.
[0055] It is understandable that the connection structure of fastener 300, shock absorber 400, first connecting hole K1, and second connecting hole K2 can also be used for connecting other components. For example... Figure 1 As shown, the heat shield 200 can also be connected to the cylinder head 800 of the engine via the damping unit 400 and the fastener 300. The damping unit 400 can effectively buffer the vibration generated by the engine from being transmitted to the heat shield 200.
[0056] For example, such as Figures 1-3 As shown, the heat shield 200 has five second connection holes K2, through which it is fixed. Specifically, three of the second connection holes K2 of the heat shield 200 are fixed to the turbocharger housing 100 by corresponding fasteners 300 and damping units 400; one second connection hole K2 of the heat shield 200 is fixed to the pre-catalyst 900 by corresponding fasteners 300 and damping units 400; and one second connection hole K2 of the heat shield 200 is fixed to the engine cylinder head 800 by corresponding fasteners 300 and damping units 400.
[0057] In summary, the mesh-like damping washers have multiple meshes, which provide good elasticity. Both damping washers are fitted onto the connection part, with one washer positioned between the heat shield and the turbocharger housing, and the other between the heat shield and the limiting part, axially along the connection. Vibrations from the turbocharger housing are transmitted to the heat shield after passing through the damping washers. The mesh-like damping washers form a well-buffered elastic connection; vibrations from the turbocharger housing are buffered by the elastic deformation of the washers, reducing the transmission of vibration energy to the heat shield and thus preventing resonance, reducing the risk of heat shield rupture due to resonance, and also reducing turbocharger oil film noise. Furthermore, the damping washers allow the heat shield to displace due to vibration, avoiding stress concentration and reducing the risk of vibration fatigue cracking failure of the heat shield.
[0058] This application also provides a vehicle. The vehicle integrates the aforementioned supercharger assembly.
[0059] By employing the aforementioned turbocharger assembly, the transmission of vibration energy from the turbocharger housing to the heat shield can be reduced, thereby preventing heat shield resonance and lowering the risk of heat shield rupture due to resonance. This also helps reduce oil film noise from the turbocharger assembly. Furthermore, the damping washers allow the heat shield to shift due to vibration, preventing stress concentration and reducing the risk of vibration fatigue cracking failure of the heat shield.
[0060] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.
[0061] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A turbocharger assembly, characterized in that, include: The turbocharger housing (100), heat shield (200), fasteners (300) and shock absorber unit (400); The turbocharger housing (100) has a first connection hole (K1); The heat shield (200) is located outside the turbocharger housing (100) and covers at least a portion of the turbocharger housing (100); the heat shield (200) has a second connection hole (K2) that communicates with the first connection hole (K1); The fastener (300) includes: a limiting part (301) and a connecting part (302); the limiting part (301) is fixedly connected to one end of the connecting part (302), and the other end of the connecting part (302) passes through the second connecting hole (K2) and is connected to the first connecting hole (K1); The damping unit (400) includes two mesh-shaped damping washers (410); both damping washers (410) are sleeved on the connecting part (302), and in the axial direction of the connecting part (302), one damping washer (410) is located between the heat insulation cover (200) and the turbocharger housing (100), and the other damping washer (410) is located between the heat insulation cover (200) and the limiting part (301).
2. The turbocharger assembly according to claim 1, characterized in that, The shock-absorbing washer (410) includes: a plurality of first plate portions (411) and a plurality of second plate portions (412). The surface of the first plate (411) and the surface of the second plate (412) intersect, and the first plate (411) and the second plate (412) are connected at the intersection. The plurality of first plate (411) and the plurality of second plate (412) can form a plurality of grid holes (W0). The plurality of mesh holes (W0) are arranged in parallel and all penetrate the damping washer (410) along a first direction (X), which is parallel to the radial direction of the damping washer (410).
3. The turbocharger assembly according to claim 2, characterized in that, The damping washer (410) has multiple main load-bearing parts (413) on either side in the axial direction; the edge of a first plate part (411) and the edge of a second plate part (412) on the same side are connected to form a main load-bearing part (413). Each of the main load-bearing parts (413) extends along the first direction (X), and the plurality of main load-bearing parts (413) provided on the same side of the damping washer (410) are distributed at intervals along the second direction (Y); the second direction (Y) is perpendicular to the first direction (X) and parallel to the radial direction of the damping washer (410).
4. The turbocharger assembly according to claim 3, characterized in that, For the plurality of main load-bearing parts (413) provided on any side of the damping washer (410) in the axial direction, the plurality of main load-bearing parts (413) include: at least two first main load-bearing parts (413a) and at least two second main load-bearing parts (413b); in the second direction (Y), at least one second main load-bearing part (413b) is distributed on one side of the at least two first main load-bearing parts (413a), and at least one second main load-bearing part (413b) is also distributed on the other side of the at least two first main load-bearing parts (413a). The first main load-bearing part (413a) is divided into two sections in the first direction (X) by the area enclosed by the damping washer (410); the second main load-bearing part (413b) is continuously arranged in the first direction (X).
5. The turbocharger assembly according to claim 3, characterized in that, The shock-absorbing washer (410) is provided with two first auxiliary load-bearing parts (414) on either side of the axial direction, and each of the first auxiliary load-bearing parts (414) extends along the first direction (X); Among them, for the shock-absorbing washer (410), a plurality of main load-bearing parts (413) and two first auxiliary load-bearing parts (414) are provided on any side of the axial direction. The plurality of main load-bearing parts (413) are distributed between the two first auxiliary load-bearing parts (414) in the second direction (Y). One first auxiliary load-bearing part (414) is the edge of a first plate part (411), and the other first auxiliary load-bearing part (414) is the edge of a second plate part (412).
6. The turbocharger assembly according to claim 5, characterized in that, The damping washer (410) has at least one second auxiliary load-bearing part (415) on either side of the second direction (Y), and the edge of one of the first plate parts (411) and the edge of one of the second plate parts (412) on the same side are connected to form a second auxiliary load-bearing part (415); in the axial direction (Z) of the damping washer (410), the at least one second auxiliary load-bearing part (415) is located between two first auxiliary load-bearing parts (414); Each of the second auxiliary load-bearing parts (415) extends along the first direction (X).
7. The turbocharger assembly according to claim 2, characterized in that, The plurality of mesh holes (W0) are arrayed along the axial direction (Z) and the second direction (Y) of the damping washer (410) to form at least two first mesh hole layers (C1) and at least one second mesh hole layer (C2); the first mesh hole layer (C1) includes a plurality of first mesh holes (W1) arranged along the second direction (Y); the second mesh hole layer (C2) includes a plurality of second mesh holes (W2) arranged along the second direction (Y). In the axial (Z) direction of the damping washer (410), at least two first mesh hole layers (C1) and at least one second mesh hole layer (C2) are arranged alternately; for an adjacent first mesh hole layer (C1) and a second mesh hole layer (C2), in the second direction (Y), the plurality of first mesh holes (W1) in a first mesh hole layer (C1) and the plurality of second mesh holes (W2) in a second mesh hole layer (C2) are arranged alternately.
8. The turbocharger assembly according to claim 7, characterized in that, The cross-section of the mesh hole (W0) is rhomboid; Among them, for two first mesh holes (W1) that are adjacent to each other in the axial (Z) direction of the damping washer (410), a corner (W11) of one first mesh hole (W1) and a corner (W11) of the other first mesh hole (W1) are diagonally opposite each other.
9. The turbocharger assembly according to any one of claims 1-8, characterized in that, The shock absorption unit (400) also includes: an inner bushing (420) and a gasket (430). The inner sleeve (420) is fitted onto the connecting part (302), and the inner sleeve (420) includes: a sleeve body (421) and a support piece (422) fixedly connected to one end of the sleeve body (421); the support piece (422) abuts against the turbocharger housing (100), and the gasket (430) is fitted onto the sleeve body (421) and disposed opposite to the support piece (422); Both of the shock-absorbing washers (410) are sleeved on the sleeve body (421), and in the axial direction of the sleeve body (421), one shock-absorbing washer (410) is sandwiched between the heat insulation cover (200) and the support plate (422), and the other shock-absorbing washer (410) is sandwiched between the heat insulation cover (200) and the gasket (430); the side of the gasket (430) away from the shock-absorbing washer (410) abuts against the limiting part (301).
10. A vehicle, characterized in that, The vehicle integrates a turbocharger assembly as described in any one of claims 1-9.