Turbocharger waste gas bypass valve assembly and turbocharger

Abstract

The utility model relates to a turbocharger waste gas bypass valve assembly and a turbocharger. The turbocharger waste gas bypass valve assembly comprises a rocker arm, a valve cover, a gasket and a belleville spring. The rocker arm is provided with a through hole, and the orifice of the through hole is provided with a chamfer or a fillet; the valve cover comprises a valve cover main body, one end of the valve cover main body is provided with a connecting shaft body, the connecting shaft body is arranged in the through hole in a penetrating manner, and the connecting shaft body extends out of the through hole and is connected with a limiting part; the gasket sleeves one end, close to the limiting part, of the connecting shaft body; the connecting shaft body is sleeved with the belleville spring, and the belleville spring is located between the gasket and the rocker arm, and the small-diameter end of the belleville spring is close to the rocker arm and makes contact with the rocker arm at the chamfer / fillet position; according to the waste gas bypass valve assembly, the belleville spring is used for achieving the effects of filling an axial gap and buffering, and vibration noise can be reduced; meanwhile, chamfers or fillets are arranged at the orifices of the through holes to center the belleville springs, so that the valve cover can be limited, noise can be further reduced, and abrasion of the valve cover can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to turbocharger technical field especially is a kind of turbocharger waste gas bypass valve assembly and turbocharger. BACKGROUND

[0002] As the important component of automobile engine, the main function of turbocharger is to increase the air intake density of automobile engine, so that the fuel combustion of engine is more sufficient, and the driving force of engine is increased. The common type of supercharger is waste gas bypass supercharger, that is, the high-temperature gas discharged by engine is used to drive the turbine of supercharger, so as to drive the compressor of supercharger to work. Since the exhaust gas amount discharged by automobile engine is different at different speeds, the required air intake amount is also different, and the waste gas bypass valve assembly is generally arranged in the volute flow channel of the supercharger to control the exhaust gas amount entering the turbine.

[0003] During the operation of turbocharger, the airflow generated by turbocharger will impact the waste gas bypass valve assembly, so that the valve cover of waste gas bypass valve assembly will vibrate in axial and radial directions, which not only generates large noise, but also accelerates the wear of valve cover and increases the use cost of equipment. SUMMARY

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem that, in the prior art, during the operation of turbocharger, the airflow generated by turbocharger will impact the waste gas bypass valve assembly, so that the valve cover of waste gas bypass valve assembly will vibrate in axial and radial directions, which not only generates large noise, but also accelerates the wear of valve cover and increases the use cost of equipment.

[0005] To solve the above technical problem, the utility model provides a waste gas bypass valve assembly of turbocharger, which comprises,

[0006] A rocker arm is provided with a through hole, and the hole opening of the through hole is provided with a chamfer or a round corner.

[0007] A valve cover comprises a valve cover body, one end of the valve cover body is coaxially provided with a connecting shaft body, the connecting shaft body penetrates the through hole, and one end of the connecting shaft body away from the valve cover body extends to the outside of the through hole and is coaxially connected with a limiting part.

[0008] A gasket is annular in structure, the gasket is sleeved on one end of the connecting shaft body close to the limiting part, and the inner diameter of the gasket is smaller than the outer diameter of the limiting part.

[0009] The butterfly spring is sleeved on the connecting shaft body, is located between the gasket and the rocker arm, and one end of the butterfly spring with a small diameter is close to the rocker arm and is in contact with the rocker arm at the chamfered / circularly beveled corner.

[0010] In an embodiment of the utility model, the rocker arm includes a rocker arm rod and a rocker arm head, the rocker arm head includes a sleeve joint part for connecting one end of the rocker arm rod and a connecting part integrally formed with the sleeve joint part, the connecting part is a plate structure, and the through hole is vertically formed on the connecting part.

[0011] In an embodiment of the utility model, the connecting shaft body includes coaxially connected first and second sections, the first and second sections are both cylindrical structures, the diameter of the first section is greater than that of the second section, one end of the first section away from the second section is connected with the valve cover body, and the second section away from the first section is coaxially connected with the butterfly-shaped limiting part.

[0012] In an embodiment of the utility model, the valve cover body is a circular truncated cone structure, and the first section is coaxially connected with one end of the valve cover body with a small diameter.

[0013] In an embodiment of the utility model, the outer diameter of the first section is less than the inner diameter of the through hole, and the outer diameter of the first section corresponds to the inner diameter of the butterfly spring.

[0014] In an embodiment of the utility model, the inner diameter of the butterfly spring is not greater than the inner diameter of the through hole.

[0015] In an embodiment of the utility model, the length of the first section is greater than the length of the through hole, and the thickness of the gasket corresponds to the length of the second section.

[0016] In an embodiment of the utility model, the gasket is made of rubber.

[0017] In an embodiment of the utility model, the butterfly spring is made of an iron sheet punched.

[0018] A turbocharger includes the turbocharger wastegate valve assembly according to any one of the preceding embodiments.

[0019] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0020] The utility model discloses a turbocharger waste gas bypass valve subassembly and turbocharger, including rocker, valve cover, gasket and butterfly spring, the through -hole is provided with the chamfer or the round angle of the orifice of through -hole and is set up on the rocker, the valve cover includes valve cover main part, and the one end of valve cover main part is provided with the connecting shaft body, and the connecting shaft body is worn in the through -hole, and the connecting shaft body extends to the outside of through -hole and is connected with the limiting portion, the gasket is annular structure, and the gasket is set up in the one end of connecting shaft body close to the limiting portion, the butterfly spring is set up on the connecting shaft body, and the butterfly spring is located between gasket and rocker, and the one end of butterfly spring small diameter is close to rocker and is in contact with rocker at chamfer / round angle, this waste gas bypass valve subassembly sets up the butterfly spring and gasket between rocker and valve cover to fill up the axial gap between the both, and utilizes the elastic deformation ability of butterfly spring to play the role of buffering to reduce the vibration noise of axial relative movement between parts, simultaneously, sets up chamfer or round angle at the orifice of through -hole on the rocker, makes butterfly spring contact with rocker at chamfer or round angle position to play the role of centering and position definition to butterfly spring, like this, the butterfly spring can play the role of limiting to valve cover, not only can further reduce the noise produced in the process of equipment use, can also reduce the radial wear of valve cover, improves the service life of parts, reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the content of the utility model more easily be clearly understood, the following is according to the specific embodiment of the utility model and combines the drawings, and the utility model is further detailed, wherein

[0022] Figure 1 It is the perspective drawing of turbocharger waste gas bypass valve subassembly of the preferred embodiment of the utility model;

[0023] Figure 2 It is the explosion drawing of turbocharger waste gas bypass valve subassembly of the preferred embodiment of the utility model;

[0024] Figure 3 It is the sectional view of turbocharger waste gas bypass valve subassembly of the preferred embodiment of the utility model;

[0025] Figure 4 It is the structure schematic view of rocker of turbocharger waste gas bypass valve subassembly of the preferred embodiment of the utility model;

[0026] Figure 5 It is the structure schematic view of valve cover of turbocharger waste gas bypass valve subassembly of the preferred embodiment of the utility model.

[0027] Description of the drawings reference sign: 1, rocker;11, through -hole;12, rocker lever;13, rocker head;2, valve cover;21, valve cover main part;22, connecting shaft body;221, first section;222, second section;23, limiting portion;3, gasket;4, butterfly spring. DETAILED DESCRIPTION

[0028] The utility model will be further explained in connection with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. Embodiment one

[0029] Referring to Figures 1-5 As shown in the figure, a turbocharger waste gas bypass valve assembly of the utility model, comprising

[0030] The rocker arm 1 is provided with a through hole 11, and the orifice of the through hole 11 is provided with a chamfer or a round corner;

[0031] The valve cover 2 comprises a valve cover main body 21, and a connecting shaft body 22 is coaxially arranged at one end of the valve cover main body 21, the connecting shaft body 22 is arranged in the through hole 11, and the end of the connecting shaft body 22 away from the valve cover main body 21 extends to the outside of the through hole 11 and is coaxially connected with a limiting portion 23;

[0032] The gasket 3 is annular, the gasket 3 is sleeved on the end of the connecting shaft body 22 close to the limiting portion 23, and the inner diameter of the gasket 3 is smaller than the outer diameter of the limiting portion 23;

[0033] The butterfly spring 4 is sleeved on the connecting shaft body 22, the butterfly spring 4 is located between the gasket 3 and the rocker arm 1, and the end of the butterfly spring 4 with a small diameter is close to the rocker arm 1 and contacts the rocker arm 1 at the chamfer / corner.

[0034] The utility model discloses a turbocharger waste gas bypass valve assembly, which is coaxially arranged between the rocker arm 1 and the valve cover 2 to fill the axial gap between the two, and the elastic deformation capacity of the butterfly spring 4 is used to play a buffering role, thereby reducing the vibration noise caused by the axial relative movement between the parts; meanwhile, the chamfer or the round corner is arranged at the orifice of the through hole 11 on the rocker arm 1, so that the butterfly spring 4 contacts the rocker arm 1 at the chamfer or the corner, thereby playing the role of centering and position limiting of the butterfly spring 4 (i.e. the butterfly spring 4 is coaxial with the through hole 11), so that the butterfly spring 4 can play the role of centering and limiting of the valve cover 2, which can further reduce the noise generated during the use of the equipment, reduce the radial wear of the valve cover 2, prolong the service life of the parts and reduce the cost.

[0035] Referring to Figure 4 Further, the rocker arm 1 comprises a rocker arm rod 12 and a rocker arm head 13, the rocker arm head 13 comprises a sleeve joint portion for connecting one end of the rocker arm rod 12 and a connecting portion integrally formed with the sleeve joint portion, the connecting portion is a plate-shaped structure, and the through hole 11 is vertically arranged on the connecting portion.

[0036] Referring to Figure 3 and Figure 5 Further, the connecting shaft body 22 comprises coaxially connected first section 221 and second section 222, both of which are cylindrical structures, and the diameter of the first section 221 is larger than that of the second section 222, the end of the first section 221 away from the second section 222 is connected with the valve cover body 21, and the end of the second section 222 away from the first section 221 is coaxially connected with the butterfly-shaped limiting part 23. Specifically, when the valve cover 2 is installed on the rocker arm 1, in the natural state, the end face of the small-diameter end of the valve cover body 21 is in parallel contact with the bottom surface of the rocker arm 1, the first section 221 passes through the through hole 11, and the end of the first section 221 away from the valve cover body 21 is higher than the top surface of the rocker arm 1, leaving a certain installation space for the butterfly spring 4; the length of the second section 222 corresponds to the thickness of the gasket 3, so that the gasket 3 sleeved on the second section 222 is limited between the first section 221 and the limiting part 23.

[0037] Further, the valve cover body 21 is a circular truncated cone structure, and the first section 221 is coaxially connected with the small-diameter end of the valve cover body 21.

[0038] Further, the outer diameter of the first section 221 is smaller than the inner diameter of the through hole 11, and the outer diameter of the first section 221 corresponds to the inner diameter of the butterfly spring 4, so that when the position of the butterfly spring 4 is limited, the position of the valve cover 2 can also be limited.

[0039] Further, the inner diameter of the butterfly spring 4 is not greater than the inner diameter of the through hole 11. Specifically, the inner diameter of the butterfly spring 4 is smaller than or equal to the inner diameter of the through hole 11, and the small-diameter end of the butterfly spring 4 is installed on the side close to the rocker arm 1, so that the round or chamfered corner at the opening of the through hole 11 can limit and center the butterfly spring 4, so that the butterfly spring 4 cannot move in the radial direction, thereby centering and limiting the valve cover 2.

[0040] Further, the length of the first section 221 is greater than the length of the through hole 11, and the thickness of the gasket 3 corresponds to the length of the second section 222.

[0041] Further, the gasket 3 is made of rubber material.

[0042] Further, the butterfly spring 4 is made of iron sheet punched. Embodiment two

[0043] The utility model discloses still disclose a kind of turbochargers, including the turbocharger waste gate valve assembly of embodiment one.

[0044] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments are not required to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A turbocharger wastegate valve assembly characterized by, The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly.

2. The turbocharger wastegate valve assembly of claim 1, wherein: The application relates to a turbocharger wastegate valve assembly.

3. The turbocharger wastegate valve assembly of claim 1, wherein: The application relates to a turbocharger wastegate valve assembly.

4. The turbocharger wastegate valve assembly of claim 3, wherein: The application relates to a turbocharger wastegate valve assembly.

5. The turbocharger wastegate valve assembly of claim 3 wherein: The application relates to a turbocharger wastegate valve assembly.

6. The turbocharger wastegate valve assembly of claim 5, wherein: The application relates to a turbocharger wastegate valve assembly.

7. The turbocharger wastegate valve assembly of claim 6, wherein: The application relates to a turbocharger wastegate valve assembly.

8. The turbocharger wastegate valve assembly of claim 1 wherein: The application relates to a turbocharger wastegate valve assembly.

9. The turbocharger wastegate valve assembly of claim 1 wherein: The application relates to a turbocharger wastegate valve assembly.

10. A turbocharger characterized by: The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. The application relates to a turbocharger wastegate valve assembly. 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