Engine and intake manifold assembly thereof
By designing an intake manifold assembly that can be adjusted in multiple degrees of freedom, combined with the use of the sealing ring, the problem of air leakage and flange or bolts being easily cracked in the prior art under high temperature and high pressure environment is solved, and the reliability of sealing and connection is achieved.
Patent Information
- Application Number
- CN202421759876.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-23
AI Technical Summary
In the prior art, the rigid connection between the intake manifold and the cylinder head and the body is prone to cause air leakage in the sealing area under high temperature and high pressure environment, and the flange or bolt may have reliability risks such as cracks and fractures.
An intake manifold assembly is designed, including a manifold body, a sealing ring and a first flange for connecting to the body. The manifold body can be adjusted in multiple directions of freedom. By cooperating with the inner bore gap of the first flange and providing a sealing ring between the manifold body and the first flange, good displacement compensation ability is achieved.
Through the multi-directional adjustment of the manifold body and the use of the sealing ring, the manifold body is eliminated or reduced, the sealing and connection reliability is ensured, and air leakage and cracks or breakage problems of flange or bolts are avoided.
Smart Images
Figure CN222879790U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, in particular to an intake manifold component. Background Art
[0002] The engine is a power device that converts heat energy into kinetic energy. It is currently widely used in production. The cylinder head is one of the main components of the combustion chamber on the engine. Its function is to seal the gas. It forms a combustion space together with the piston and cylinder liner, and bears the effects of high-temperature and high-pressure combustion gas. The intake manifold is a connecting pipe from the pressure-stabilizing chamber of the engine body to the single intake channel of the cylinder head.
[0003] The current existing technology is that the intake manifold is rigidly connected to the cylinder head and the engine body. When cold, the sealing of each connection part is normal, and there are no sealing and reliability problems. However, once the cylinder head is deformed by thermal stress and mechanical stress, the sealing part may leak, and even the flanges or bolts used for connection may crack or break, posing a reliability risk. Utility Model Content
[0004] In view of the above defects existing in the prior art, the first object of the utility model is to provide an intake manifold assembly, which can be adjusted in multiple degrees of freedom, has good displacement compensation capability, can eliminate or reduce the force on the manifold body, thereby ensuring the reliability of sealing and connection.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0006] An intake manifold assembly includes a manifold body, a sealing ring and a first flange for connecting to an engine body, one end of the manifold body is inserted into an inner hole of the first flange and is gap-matched with the inner hole of the first flange, and the sealing ring is arranged between the manifold body and the first flange.
[0007] Wherein, the manifold body and the first flange are clearance-matched with a tolerance grade of H7 / e8.
[0008] Wherein, a sealing groove is arranged on the manifold body, and the sealing ring is arranged in the sealing groove.
[0009] Wherein, the sealing ring is an O-ring.
[0010] Wherein, the other end of the manifold body is provided with a second flange for connecting with the cylinder head.
[0011] Wherein, the second flange is integrally arranged with the manifold body.
[0012] Wherein, the manifold body comprises a straight section, a conical section and an arc section connected in sequence, the straight section is loosely matched with the first flange, and the second flange is arranged at the end of the arc section.
[0013] By adopting the above technical solution, the beneficial effects of the utility model are:
[0014] The intake manifold assembly provided by the utility model is formed by disassembling the integrated intake manifold in the prior art. The manifold body is matched with the inner hole clearance of the first flange and the manifold body is inserted into the inner hole of the first flange. At the same time, a sealing ring is arranged between the manifold body and the first flange, so that the manifold body can be adjusted in multiple degrees of freedom directions, has good displacement compensation capability, can eliminate or reduce the force on the manifold body, thereby ensuring the reliability of sealing and connection.
[0015] The second object of the utility model is to provide an engine, the intake manifold assembly of the engine can be adjusted in multiple degrees of freedom, has good displacement compensation capability, can eliminate or reduce the stress on the manifold body, thereby ensuring the reliability of sealing and connection.
[0016] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0017] An engine comprises an engine body and a cylinder head, and also comprises the intake manifold assembly described in the above technical solution, wherein the intake manifold assembly is connected between the engine body and the cylinder head.
[0018] Wherein, the first flange of the intake manifold assembly is fixed to the engine body by a first locking bolt, and a first sealing gasket is arranged between the first flange and the engine body.
[0019] Wherein, the second flange of the intake manifold assembly is fixed to the cylinder head by a second locking bolt, and a second sealing gasket is arranged between the second flange and the cylinder head.
[0020] By adopting the above technical solution, the beneficial effects of the utility model are:
[0021] The engine provided by the utility model has an intake manifold assembly described in the above technical solution arranged between its body and the cylinder head. The intake manifold assembly can be adjusted in multiple degrees of freedom directions, has good displacement compensation capabilities, can eliminate or reduce the force on the manifold body, thereby ensuring the reliability of sealing and connection. Therefore, the engine of the utility model can ensure the reliability of sealing and connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the connection between the intake manifold assembly, the cylinder head and the engine body in the utility model engine;
[0023] Figure 2 yes Figure 1 A cross-sectional view of
[0024] In the figure: 1, engine body; 2, cylinder head; 3, manifold body; 31, straight section; 32, tapered section; 33, arc section; 4, sealing ring; 5, first flange; 6, second flange; 7, first locking bolt; 8, first sealing gasket; 9, second locking bolt; 10, second sealing gasket. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0026] like Figure 1 and Figure 2 As shown, this embodiment discloses an engine, including an engine body 1 and a cylinder head 2 , and also includes an intake manifold assembly, wherein the intake manifold assembly is connected between the engine body 1 and the cylinder head 2 .
[0027] Among them, the intake manifold assembly includes a manifold body 3, a sealing ring 4 and a first flange 5 for connecting to the body 1, one end of the manifold body 3 is inserted in the inner hole of the first flange 5 and is gap-matched with the inner hole of the first flange 5, and the sealing ring 4 is arranged between the manifold body 3 and the first flange 5; the first flange 5 is fixed to the body 1 by a first locking bolt 7, and a first sealing gasket 8 is arranged between the first flange 5 and the body 1; the other end of the manifold body 3 is provided with a second flange 6 for connecting to the cylinder head 2, the second flange 6 is fixed to the cylinder head 2 by a second locking bolt 9, and a second sealing gasket 10 is arranged between the second flange 6 and the cylinder head 2; the manifold body 3 connects the pressure stabilizing chamber of the body 1 and the intake duct of the cylinder head 2.
[0028] The intake manifold assembly in the present embodiment is formed by disassembling the integrated intake manifold in the prior art. The manifold body 3 is gap-matched with the inner hole of the first flange 5 and the manifold body 3 is inserted into the inner hole of the first flange 5. At the same time, a sealing ring 4 is arranged between the manifold body 3 and the first flange 5, so that the manifold body 3 can be adjusted in multiple degrees of freedom directions, has good displacement compensation capability, can eliminate or reduce the force on the manifold body 3, thereby ensuring the reliability of sealing and connection. The engine in the present embodiment has the intake manifold assembly, so the engine in the present embodiment can ensure the reliability of sealing and connection.
[0029] Specifically, the manifold body 3 and the first flange 5 in this embodiment are clearance-matched with a tolerance grade of H7 / e8. Of course, other tolerance grades may also be used, depending on the specific design requirements, and this embodiment does not limit this.
[0030] In this embodiment, an annular sealing groove is provided on the manifold body 3, and the sealing ring 4 is provided in the sealing groove. Of course, the sealing groove can also be provided on the inner wall of the first flange 5, or the sealing grooves can be provided on the inner walls of the manifold body 3 and the first flange 5 respectively, which can be provided according to actual needs, and this embodiment does not limit this.
[0031] Since the O-type sealing ring has the advantages of simple structure, easy manufacturing, good sealing performance, small friction and small size of the sealing groove to be opened, the sealing ring 4 in this embodiment is an O-type sealing ring.
[0032] In order to improve the connection strength between the second flange 6 and the manifold body 3 , in this embodiment, the second flange 6 and the manifold body 3 are preferably provided integrally.
[0033] The manifold body 3 in this embodiment includes a straight section 31, a tapered section 32 and an arc section 33 connected in sequence, the straight section 31 is inserted into the inner hole of the first flange 5 and is gap-matched with the inner hole of the first flange 5, the sealing groove is arranged on the straight section 31; the second flange 6 is arranged at the end of the arc section 33. Such an arrangement facilitates the connection between the engine body 1 and the cylinder head 2.
[0034] An embodiment of the engine and the intake manifold assembly thereof of the utility model is described in detail above, and there are more embodiments which will not be described in detail here.
[0035] In summary, the engine and its intake manifold assembly of the utility model can ensure the reliability of sealing and connection. The utility model is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative labor are all within the protection scope of the utility model.
Claims
1. An intake manifold assembly, characterized in that: It includes a manifold body, a sealing ring and a first flange for connecting with a machine body, one end of the manifold body is inserted into the inner hole of the first flange and is gap-matched with the inner hole of the first flange, and the sealing ring is arranged between the manifold body and the first flange.
2. The intake manifold assembly according to claim 1, characterized in that: The manifold body and the first flange are clearance-matched with a tolerance level of H7 / e8.
3. The intake manifold assembly according to claim 1, characterized in that: A sealing groove is arranged on the manifold body, and the sealing ring is arranged in the sealing groove.
4. The intake manifold assembly according to claim 1, characterized in that: The sealing ring is an O-type sealing ring.
5. The intake manifold assembly according to claim 1, characterized in that: The other end of the manifold body is provided with a second flange for connecting with the cylinder head.
6. The intake manifold assembly according to claim 5, characterized in that: The second flange is integrally formed with the manifold body.
7. The intake manifold assembly according to claim 5, characterized in that: The manifold body includes a straight section, a tapered section and an arc section connected in sequence, the straight section is loosely matched with the first flange, and the second flange is arranged at the end of the arc section.
8. An engine, comprising a body and a cylinder head, characterized in that: It also includes the intake manifold assembly according to any one of claims 1 to 7, wherein the intake manifold assembly is connected between the engine body and the cylinder head.
9. The engine according to claim 8, characterized in that The first flange of the intake manifold assembly is fixed to the engine body by a first locking bolt, and a first sealing gasket is arranged between the first flange and the engine body.
10. The engine according to claim 8, characterized in that The second flange of the intake manifold assembly is fixed to the cylinder head by a second locking bolt, and a second sealing gasket is arranged between the second flange and the cylinder head.