Engine

Abstract

The engine comprises a rocker arm supporting seat, a rocker arm supporting seat mounting hole is designed to be a counter bore, the diameter of the upper end of the rocker arm supporting seat mounting hole is smaller than that of the lower end of the rocker arm supporting seat mounting hole, and a cylinder head is provided with a through hole communicated with the counter bore to form a mounting channel of a fixing part; the positioning pin design is added between the through hole and the radial direction of the fixing piece, so that the performance stability of the engine is improved, the commodity property of the engine with sound and vibration is greatly optimized, the market product competitiveness is improved, meanwhile, a huge effect is provided for the interchangeability development of engine parts in the African region with the sales volume of millions per year, and the market prospect is wide. The rocker arm supporting seat can be exchanged with other types of rocker arm parts for maintenance, and the structure has effective competitiveness for the whole African market.

Description

Technical Field

[0001] This application relates to the technical field of internal combustion engines. More specifically, it relates to a valve rocker arm assembly and also to an engine. Background Art

[0002] Currently, most of the left and right mounting holes of the rocker arm support seat in the existing market are designed as through holes, and the diameters of the through holes are different. The current through hole design makes it impossible for the rocker arm support seat to be well-positioned with the cylinder head. When the engine is running and vibrating, the valve adjusting fixing part deviates from the valve head, resulting in poor power and sound quality, and exacerbating the reduction of the overall engine performance. At the same time, in regions with underdeveloped manufacturing such as Africa, once there is a problem with the engine, only parts are replaced. However, there are still old versions of the aforementioned engines in the market. Most of the left and right mounting holes of the engine rocker arm support seat are designed as small-diameter through holes, and there are also large-diameter through holes. However, the optimized valve rocker arm components cannot match the old-version engines because the diameters of the through holes are inconsistent. After interchanging, the relative positions of the rocker arm support seat and the cylinder head shift greatly, with extremely poor performance and marketability, low engine life, poor durability, easy damage, resulting in sluggish market sales, causing waste of resources. At the same time, there are many engines using this type of rocker arm component in these regions, deepening the contradiction in the rocker arm mounting hole design, increasing the conservativeness of engine sales, and being unfavorable to the large-scale procurement of engines and the development of interchangeability of parts.

[0003] Therefore, it is necessary for those skilled in the art to timely provide an engine with a simple structure, improved engine performance stability, and meeting the interchangeability requirements of parts for engines with similar structures in the African market. Summary of the Utility Model

[0004] The purpose of this application is to provide an engine with a valve rocker arm assembly. The valve rocker arm assembly has a simple structure, can improve the performance stability of the engine, greatly optimize the sound and vibration marketability of the engine, enhance the competitiveness of market products, and meet the interchangeability requirements of parts for engines with similar structures in the African market.

[0005] To achieve the above purpose, this application provides an engine, including:

[0006] A rocker arm support seat, the rocker arm support seat has a mounting hole, the mounting hole is a counterbore, and a fixing part acts on the mounting hole; a cylinder head, the cylinder head has a through hole, the through hole communicates with the counterbore to form an installation channel for the fixing part; a positioning pin, the positioning pin is located between the through hole and the fixing part for radially positioning the fixing part.

[0007] Further, it also includes that the diameter of the upper end to the lower end of the counterbore increases from small to large;

[0008] Further, it also includes a washer for increasing the force-bearing area of the fixing member, improving the load-bearing capacity and preventing the fixing member from deforming.

[0009] Further, the upper end of the counterbore is in tight fit with the fixing member to complete the axial positioning of the fixing member.

[0010] Further, the positioning pin is axially located between the rocker arm support seat and the cylinder head.

[0011] Compared with the above background art, the engine provided by the present application includes a cylinder head and a rocker arm support seat. Among them, the rocker arm support seat has a mounting hole which is a counterbore, and the fixing member acts on the mounting hole to axially position the fixing member. The cylinder head has a through hole communicating with the counterbore on the support rocker arm seat; the positioning pin is located between the through hole and the fixing member to radially position the rocker arm support seat and the cylinder head, so as to achieve a full and gapless fit between the valve rocker arm component and the cylinder head installation, and the sound and vibration commodity of the engine are also greatly optimized. At the same time, in manufacturing-backward regions such as Africa, once there is a problem with the engine, only parts are replaced. However, there are also engine versions described in the background art in the market, and there are also engine versions optimized according to the technology of the present application. However, the optimized valve rocker arm component cannot match the old version of the engine, so it cannot be interchanged and repaired. The mounting hole of the rocker arm support seat is designed as a counterbore with a smaller diameter at the top and a larger diameter at the bottom, which not only meets the through hole of the old version of the cylinder head but also meets the through hole of the cylinder head after optimizing the performance. The above setting method has a simple structure, optimizes the engine performance, and plays a huge role in the development of the interchangeability of engine parts in Africa where the annual sales volume is in the millions. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0013] Figure 1 It is an exploded view of the engine according to the embodiment of the present application;

[0014] Figure 2 It is Figure 1 the sectional view shown;

[0015] Figure 3 It is a sectional view of the rocker arm support seat in the embodiment of the present application.

[0016] Wherein:

[0017] 10 - Rocker arm support seat, 11 - Mounting hole, 12 - Fastening piece, 13 - Locating pin, 14 - Washer, 15 - Counterbore, 16 - Upper end of the counterbore, 17 - Lower end of the counterbore, 20 - Cylinder head, 21 - Through hole. Embodiment

[0018] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0019] In order to enable those skilled in the art in the technical field to better understand the solution of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0020] Please refer to Figure 1 、 Figure 2 and Figure 3 , the engine provided by the embodiment of the present application includes a rocker arm support seat 10. There are at least two mounting holes 11 on the rocker arm support seat 10. The lower end of the rocker arm support seat 10 is a cylinder head 20. A through hole 21 is provided in the cylinder head 20 and communicates with the mounting holes 11 on the rocker arm support seat 10 to form a mounting channel for the fastening piece 12. A locating pin 13 is provided between the through hole 21 and the fastening piece 12 (such as a bolt or a rivet), so that the rocker arm support seat 10 and the cylinder head 20 are well-positioned and matched, the sound and vibration commerciality of the engine are optimized, and the engine performance is improved.

[0021] In this embodiment, the mounting hole 11 is a counterbore 15. The diameter of the upper end 16 of the counterbore is smaller than the diameter of the lower end 17 of the counterbore. In this way, the mounting hole 11 is designed as a counterbore 15 with a smaller diameter at the upper end and a larger diameter at the lower end, which can match two kinds of through holes 21 with different diameters. Especially in regions with backward manufacturing industries such as Africa, both the old version engines on the market a few years ago and the optimized new version engines are in use. So when the valve rocker arm assembly is damaged, this structure can match the through holes of the two versions, further realizing the repair of the engine parts of the two versions, achieving interchangeable repair of parts, and playing a huge role in the development of the interchangeability of engine parts. For the entire African market, this structure has effective competitiveness.

[0022] In this embodiment, a washer 14 is provided at the position of the fastening piece 12 and the mounting hole 11. During the operation of the engine, the fastening piece 12 is easily affected by vibration and impact. The fastening piece gasket 14 is used to increase the force-bearing area of the fastening piece, improve the load-bearing capacity and prevent the fastening piece from deforming. This is the prior art and will not be elaborated here.

[0023] In this embodiment, the upper end 16 of the counterbore is in a tight fit with the fixing member 12 to complete the radial positioning of the fixing member 12. The matching manner between the counterbore 15 and the fixing member 12 is a prior art and will not be elaborated herein.

[0024] In this embodiment, the positioning pin 13 is axially located between the rocker arm support seat 10 and the cylinder head 20 and at the middle position of the fixing member 12, so as to achieve good positioning and matching between the valve rocker arm component and the cylinder head, and the sound and vibration commodity properties of the engine are also greatly optimized.

[0025] In summary, the engine provided by the embodiment of the present application includes a rocker arm support seat 10. The mounting hole 11 of the rocker arm support seat 10 is designed as a counterbore 15 with a smaller upper end diameter than the lower end diameter. The cylinder head 20 has a through hole 21 communicating with the counterbore 15 to form an installation channel for the fixing member 12. Between the through hole 21 and the fixing member 12, with the design of the positioning pin 13, the performance stability of the engine is improved, and the sound and vibration commodity properties of the engine are also greatly optimized, enhancing the market competitiveness of the product. At the same time, in the African region with annual sales of millions, it plays a huge role in the development of the interchangeability of engine parts. This rocker arm support seat can be interchanged and repaired with other types of rocker arm components, and this structure has effective competitiveness in the entire African market.

[0026] The engine provided by the present application has been introduced in detail above. Specific examples are used herein to elaborate the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the solution and its core idea of the present application. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An engine, characterized in that, Comprising: A rocker arm support seat having a mounting hole which is a counterbore, and a fixing member acts on the mounting hole; A cylinder head having a through hole which communicates with the counterbore to form a mounting passage for the fixing member; A positioning pin located between the through hole and the fixing member for radially positioning the rocker arm support seat and the cylinder head.

2. The engine according to claim 1, characterized in that, It further includes that the diameter of the upper end to the lower end of the counterbore increases from small to large.

3. The engine according to claim 1, characterized in that, It further includes a washer for increasing the force-bearing area of the fixing member.

4. The engine according to claim 1, characterized in that, The upper end of the counterbore is in a tight fit with the fixing member to complete the axial positioning of the fixing member.

5. The engine according to claim 1, characterized in that, The positioning pin is axially located between the rocker arm support seat and the cylinder head.

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