Turbocharger deflation valve small part

Abstract

The utility model provides a turbocharger vent valve small piece, which comprises a bypass structure, a valve and a gasket, and the valve connecting part of the bypass structure is formed by forging, so that the metal structure of the valve connecting part is more compact, and the defects of air holes and the like generated by a casting process are reduced. The strength and durability of the valve connecting part which is large in stress, small in size and prone to being damaged in the whole deflation valve small part are improved, and therefore the strength and durability of the whole deflation valve small part are improved. The bypass structure is provided with a first limiting face, the gasket is provided with a second limiting face matched with the first limiting face for limiting, the first limiting face can be machined when the valve connecting part is machined, the second limiting face can be machined when the gasket is machined, the two limiting faces are simple in structure and large in size, machining difficulty and machining steps are reduced, and machining efficiency is improved. Therefore, the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of turbocharging, and particularly relates to a small part of a turbocharger wastegate valve. Background Art

[0002] The wastegate valve (also known as the pressure relief valve or exhaust valve) of a turbocharger plays an important role in the entire supercharging system. Its main functions include preventing overboost, reducing turbo lag, protecting the turbocharger components, and so on.

[0003] The wastegate valve includes a small part of the wastegate valve and a power source connected to the small part of the wastegate valve. When the demand of the engine is lower than the output capacity of the turbocharger, the power source will control the small part of the wastegate valve to open, releasing the excess air in the engine, thereby preventing overboost of the system and protecting the engine; A technical solution is disclosed in the Chinese utility model patent A Limiting Mechanism for the Wastegate Valve of an Exhaust Gas Turbocharger (CN212028691U), which mainly forms a limit by the protrusion 31 provided on the wastegate valve 3 cooperating with the notch 21 opened at the edge position of the wastegate valve 3 or the transition part 2, so as to limit the circumferential movement of the wastegate valve and reduce the leakage of high-temperature and high-pressure gas.

[0004] However, the small part of the wastegate valve with this structure is generally made into a blank by casting process and then machined into a finished product. During casting and machining, the processing difficulty of the relatively small protrusion 31 and notch 21 is relatively high, resulting in an increase in manufacturing cost; In addition, due to the high-temperature and high-pressure working environment inside the engine, the small part of the wastegate valve manufactured by the casting process has defects in insufficient strength and durability, and is prone to failure in the long-term high-temperature and high-pressure working environment. Summary of the Utility Model

[0005] The problem to be solved by the utility model is to provide a small part of a turbocharger wastegate valve with relatively low processing difficulty, relatively low manufacturing cost, and relatively high strength and durability.

[0006] The technical solution adopted by the utility model to solve the above problems is: A small part of a turbocharger wastegate valve, comprising:

[0007] A bypass structure, wherein the bypass structure includes a transition pipe and a valve connection part which is arranged at one end of the transition pipe and formed by forging; A first limiting surface is formed at one end of the transition pipe close to the valve connection part;

[0008] A valve, wherein the valve is arranged below the valve connection part; and

[0009] A gasket, wherein the gasket is arranged above the valve connection part and fixedly connected to the valve; The gasket has a second limiting surface; The second limiting surface cooperates with the first limiting surface to limit the rotation of the valve.

[0010] Compared with the prior art, the utility model includes a bypass structure, a valve, and a gasket. The valve connection part of the bypass structure is formed by forging, making the metal structure of the valve connection part denser, reducing defects such as pores caused by the casting process, and improving the strength and durability of the valve connection part, which is relatively large in force, small in size, and prone to damage in the entire small exhaust valve part, thereby increasing the strength and durability of the entire small exhaust valve part. The bypass structure has a first limiting surface, and the gasket has a second limiting surface that cooperates with the first limiting surface for limiting. The first limiting surface can be processed simultaneously when processing the valve connection part, and the second limiting surface can be processed simultaneously when processing the gasket. Moreover, the two limiting surfaces have a simple structure and a relatively large size, reducing the processing difficulty and processing steps, thereby reducing the manufacturing cost.

[0011] A small part of a turbocharger exhaust valve of the utility model, wherein the bypass structure, the valve, and the gasket are all made by forging process.

[0012] A small part of a turbocharger exhaust valve of the utility model, wherein the valve connection part has a first through hole, and the gasket has a second through hole; the first through hole and the second through hole are used to cooperate with the installation of the valve.

[0013] A small part of a turbocharger exhaust valve of the utility model, wherein the valve includes:

[0014] A valve plate, wherein the valve plate controls the discharge of excess gas by opening and closing;

[0015] A transition rod, which is arranged on the upper end surface of the valve plate and passes through the first through hole; and

[0016] A fixing rod, which is arranged on the upper end surface of the transition rod and fixedly connected to the second through hole to fix the valve and the gasket to each other.

[0017] A small part of a turbocharger exhaust valve of the utility model, wherein the fixing rod and the second through hole are set to be fixed by welding.

[0018] A small part of a turbocharger exhaust valve of the utility model, wherein the gasket is set to have a rectangular cross-section, and the second limiting surface is arranged on one of its side surfaces.

[0019] A small part of a turbocharger exhaust valve of the utility model, wherein the bypass structure further includes a limiting convex ring arranged at one end of the transition pipe away from the valve connection part and a rotating shaft arranged on one side of the limiting convex ring.

[0020] A small component of a wastegate valve for a turbocharger of the present utility model, wherein the transition pipe is arranged in an arc shape, and the rotating shaft is used to connect to an external power source; when the external power source drives the rotating shaft to rotate circumferentially, the valve connecting part opens or closes the valve through the transition pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0022] Figure 2 is an exploded schematic diagram of the present utility model;

[0023] Figure 3 is a side view schematic diagram of the present utility model;

[0024] Figure 4 is a top view schematic diagram of the present utility model;

[0025] Figure 5 is a sectional view schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Before detailing any embodiment of the present utility model, it should be understood that in its application, the present utility model is not limited to the construction and arrangement details of the components described in the following description or illustrated in the following drawings. The present utility model can have other embodiments and can be practiced or carried out in various ways. Additionally, it should be understood that the wording and terms used herein are for descriptive purposes and should not be considered restrictive. As used herein, the terms "comprising" or "having" and their variants are intended to cover the items listed hereinafter and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "installed", "connected", "supported", and "coupled" and their variants are used broadly and cover direct installation and indirect installation, connection, support, and coupling. Further, "connected" and "coupled" are not limited to physical or mechanical connection or coupling.

[0027] And, on the one hand, in the disclosure of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model; on the other hand, the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as limiting the quantity.

[0028] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the accompanying drawings are only examples and do not limit the present utility model. The object of the present utility model has been completely and effectively achieved. The functions and structural principles of the present utility model have been demonstrated and explained in the embodiments. Without departing from the above principles, the embodiments of the present utility model can have any deformation or modification.

[0029] The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

[0030] Please refer to Figures 1-5 A small part of a turbocharger wastegate valve as shown, including a bypass structure 1, a valve 2, and a gasket 3; wherein the bypass structure 1 includes a transition pipe 11 and a valve connection part 12 which is arranged at one end of the transition pipe 11 and formed by forging; a first limiting surface 13 is formed at one end of the transition pipe 11 close to the valve connection part 12; wherein the valve 2 is arranged below the valve connection part 12; wherein the gasket 3 is arranged above the valve connection part 12 and fixedly connected to the valve 2; the gasket 3 has a second limiting surface 31; the second limiting surface 31 cooperates with the first limiting surface 13 to limit the rotation of the valve 2.

[0031] In actual use, the present utility model includes a bypass structure 1, a valve 2, and a gasket 3. The valve connection part 12 of the bypass structure 1 is formed by forging, making the metal structure of the valve connection part 12 more dense, reducing defects such as pores caused by the casting process, and improving the strength and durability of the valve connection part 12 which is subjected to greater force, smaller in size and more prone to damage in the whole small wastegate valve part, thereby increasing the strength and durability of the whole small wastegate valve part; the bypass structure 1 has a first limiting surface 13, and the gasket 3 has a second limiting surface 31 which cooperates with the first limiting surface 13 for limiting. The first limiting surface 13 can be machined simultaneously when machining the valve connection part 12, and the second limiting surface 31 can be machined simultaneously when machining the gasket 3. Moreover, the two limiting surfaces are simple in structure and large in size, reducing the machining difficulty and machining steps, thereby reducing the manufacturing cost.

[0032] Furthermore, the bypass structure 1, the valve 2, and the gasket 3 are all made by forging process.

[0033] It is worth mentioning that due to defects such as pores and looseness in castings, parts are prone to damage in the high-temperature and high-pressure engine environment. When the bypass structure 1, the valve 2, and the gasket 3 are all made by forging process, it can make the metal generate a uniform grain structure inside, thereby improving the strength and toughness of the material, enhancing the durability and fatigue resistance of the wastegate valve. During the forging process, the metal is plastically deformed, making the material structure more dense, reducing the pores and transportation that may occur in casting, and ensuring that the structure of the wastegate valve is more uniform.

[0034] Please continue to refer to Figure 2 and Figure 5 , wherein the valve connection part 12 has a first through hole 121, and the gasket 3 has a second through hole 32; the first through hole 121 and the second through hole 32 are used to cooperate with the installation of the valve 2.

[0035] Furthermore, the valve 2 includes a valve plate 21, a transition rod 22 and a fixing rod 23; wherein the valve plate 21 controls the discharge of excess gas by opening and closing; wherein the transition rod 22 is disposed on the upper end surface of the valve plate 21 and passes through the first through hole 121; wherein the fixing rod 23 is disposed on the upper end surface of the transition rod 22 and is fixedly connected to the second through hole 32 so that the valve 2 and the gasket 3 are fixed to each other.

[0036] Under this structural design, the installation among the bypass structure 1, the valve 2 and the gasket 3 is relatively convenient, and the valve 2 and the gasket 3 respectively clamp the valve connection part 12 from the upper and lower ends, and the connection is relatively reliable; through the mutual fixation of the fixing rod 23 and the second through hole 32, when the bypass structure 1 moves, it can drive the valve 2 and make the valve 2 perform opening and closing actions.

[0037] Preferably, on the basis of the fixing methods such as interference fit and threaded connection when the fixing rod 23 passes through the second through hole 32, the fixing rod 23 and the second through hole 32 are further welded and fixed to make the connection between the two more firm.

[0038] Please continue to refer to Figures 1-4 , wherein, in some embodiments, the gasket 3 is set to have a rectangular cross section, and the second limiting surface 31 is disposed on one of its side surfaces.

[0039] It can be understood that the gasket 3 can also be set to other shapes other than rectangular cross section, as long as it is ensured that the second limiting surface 31 has a carrier for setting and the second limiting surface 31 can cooperate with the first limiting surface 13 for limiting.

[0040] Please continue to refer to Figure 1 and Figure 2 , wherein the bypass structure 1 further includes a limiting convex ring 14 disposed at one end of the transition pipe 11 away from the valve connection part 12 and a rotating shaft 15 disposed on one side of the limiting convex ring 14.

[0041] Furthermore, the transition pipe 11 is set to be arc-shaped, and the rotating shaft 15 is used to connect an external power source; when the external power source drives the rotating shaft 15 to rotate circumferentially, the valve connection part 12 opens or closes the valve 2 through the transition pipe 11.

[0042] Specifically, the external power source is controlled by the automotive turbocharging system and connected to the rotating shaft 15; when the turbocharging system detects that the internal pressure of the engine is too high, it will start the external power source, and the external power source drives the rotating shaft 15 to rotate circumferentially; due to the presence of the arc-shaped transition pipe 11, the entire bypass structure 1 can convert the rotational movement of the rotating shaft 15 into the lifting movement of the valve connection part 12, thereby driving the valve 2 to lift, enabling the gas in the engine to be exhausted, so as to ensure that the supercharger operates within a safe range; by releasing the excess pressure, the blow-off valve can reduce the load on the turbocharger, lower the risk of wear and damage to the supercharger components, and extend its service life.

[0043] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation on the claims. The present invention is not limited to the above embodiments, and its specific structure allows for changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A small component of a turbocharger wastegate valve, characterized in that Comprising: A bypass structure (1), wherein the bypass structure (1) includes a transition pipe (11) and a valve connection portion (12) provided at one end of the transition pipe (11) and formed by forging; a first limiting surface (13) is formed at one end of the transition pipe (11) close to the valve connection portion (12); A valve (2), wherein the valve (2) is provided below the valve connection portion (12); and A gasket (3), wherein the gasket (3) is provided above the valve connection portion (12) and fixedly connected to the valve (2); the gasket (3) has a second limiting surface (31); the second limiting surface (31) cooperates with the first limiting surface (13) to limit the rotation of the valve (2).

2. The small part of the turbocharger wastegate valve according to claim 1, characterized in that: The bypass structure (1), the valve (2) and the gasket (3) are all made by forging process.

3. The small wastegate valve of the turbocharger according to claim 1, characterized in that: The valve connection portion (12) has a first through hole (121), and the gasket (3) has a second through hole (32); the first through hole (121) and the second through hole (32) are used to cooperate with the installation of the valve (2).

4. The small part of the turbocharger wastegate valve according to claim 3, wherein, The valve (2) includes: A valve plate (21), wherein the valve plate (21) controls the discharge of excess gas by opening and closing; A transition rod (22), wherein the transition rod (22) is provided on the upper end surface of the valve plate (21) and passes through the first through hole (121); and A fixing rod (23), wherein the fixing rod (23) is provided on the upper end surface of the transition rod (22) and fixedly connected to the second through hole (32) to fix the valve (2) and the gasket (3) to each other.

5. The small turbocharger wastegate valve according to claim 4, characterized in that: The fixing rod (23) and the second through hole (32) are set to be welded and fixed.

6. The small part of the turbocharger wastegate valve according to claim 1, wherein: The gasket (3) is set to have a rectangular cross-section, and the second limiting surface (31) is provided on one side surface.

7. The small component of the turbocharger wastegate valve according to claim 1, characterized in that: The bypass structure (1) further includes a limiting convex ring (14) provided at one end of the transition pipe (11) away from the valve connection portion (12) and a rotating shaft (15) provided on one side of the limiting convex ring (14).

8. The small turbocharger wastegate valve according to claim 7, characterized in that: The transition pipe (11) is set to be arc-shaped, and the rotating shaft (15) is used to connect an external power source; when the external power source drives the rotating shaft (15) to rotate circumferentially, the valve connection portion (12) opens or closes the valve (2) through the transition pipe (11).

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