CN213980980U

CN213980980U - Cylinder cover structure with different exhaust passage space and cylinder center distance

Info

Publication number: CN213980980U
Application number: CN202022420258.0U
Authority: CN
Inventors: 蒙小聪; 樊心龙; 陈晓克
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-08-17
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses an exhaust passage interval and unequal cylinder head structure of cylinder heart distance relates to engine cylinder head technical field, including the cylinder head body to and the first cylinder, second cylinder, third cylinder, the fourth cylinder of arranging side by side in proper order on the cylinder head body, and the cylinder heart distance between every cylinder and the adjacent cylinder equals, it is provided with first exhaust passage, second exhaust passage, third exhaust passage, fourth exhaust passage still to arrange side by side in proper order on the cylinder head body, first exhaust passage is linked together with first cylinder, and the second exhaust passage is linked together with the second cylinder, and the third exhaust passage is linked together with the third cylinder, and the fourth exhaust passage is linked together with the fourth cylinder, and the interval between every air passage and the adjacent air passage equals, just the interval is less than the cylinder heart distance between every cylinder and the adjacent cylinder. The utility model has the characteristics of promote cylinder cap overall structure compactness, promote the engine performance, promote aftertreatment conversion efficiency etc. promptly.

Description

Cylinder cover structure with different exhaust passage space and cylinder center distance

Technical Field

The utility model relates to an engine cylinder head technical field, especially a cylinder cap structure that exhaust passage interval and cylinder center apart from inequality.

Background

The engine is a machine capable of converting other forms of energy into mechanical energy, and is in an important position in the industries of automobiles and the like. The cylinder cover of the engine is a key part of the traditional internal combustion engine, and the cylinder cover, the cylinder block and the cylinder sleeve form a basic framework of the internal combustion engine. Specifically, the cylinder head is bolted to the cylinder block by a cylinder head bolt, the cylinder liner is mounted in a cylinder bore of the cylinder block (some cylinder bores of the internal combustion engine are used for directly mounting a piston), the cylinder head, the piston and the cylinder liner constitute a combustion chamber of the internal combustion engine, and the piston reciprocates in the cylinder liner.

The cylinder head, the cylinder gasket, the cylinder sleeve (or the cylinder body) and the piston form a combustion closed space of the internal combustion engine, the pressure generated when fuel is combusted in the cylinder is usually higher, and the cylinder head is required to have enough strength and high temperature resistance.

At present, the cylinder cover is mostly arranged by adopting an overhead camshaft and four-valve cylinder cover, the existing structure is that the distance of an exhaust passage is equal to the cylinder center distance of an engine cylinder, and the design results in the following defects: 1. this results in a longer exhaust pipe, which results in a heavier exhaust pipe overall and a higher cost; 2. the long exhaust pipe leads to large surface area and large heat loss, thereby reducing the efficiency of the supercharger and the conversion efficiency of post-treatment, and the carried automobile has large radiation heat and air convection heat dissipation to the engine room, so that more heat insulation measures are required to be taken by the automobile; 3. after the exhaust pipe bearing high temperature is used, the flange surface is easy to deform to generate air leakage fault, and the long exhaust pipe is easy to deform by heating.

SUMMERY OF THE UTILITY MODEL

Problem to prior art exists, the utility model provides an exhaust passage interval and the unequal cylinder cap structure of cylinder heart apart from, the purpose is that the exhaust pipe that the exhaust passage interval equals to lead to apart from the cylinder heart of engine cylinder among the solution prior art is long and the cost is higher, and the heat loss is big to and the problem that booster efficiency and aftertreatment conversion efficiency reduce.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the cylinder cover structure comprises a cylinder cover body, a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, wherein the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are sequentially arranged on the cylinder cover body in parallel, the cylinder center distance between each cylinder and the adjacent cylinder is equal, a first exhaust passage, a second exhaust passage, a third exhaust passage and a fourth exhaust passage are further sequentially arranged on the cylinder cover body in parallel, the first exhaust passage is communicated with the first cylinder, the second exhaust passage is communicated with the second cylinder, the third exhaust passage is communicated with the third cylinder, the fourth exhaust passage is communicated with the fourth cylinder, the distance between each air passage and the adjacent air passage is equal, and the distance is smaller than the cylinder center distance between each cylinder and the adjacent cylinder.

Preferably, the cylinder cover body is further provided with an air inlet channel, and the air inlet channel, the first exhaust channel, the second exhaust channel, the third exhaust channel and the fourth exhaust channel are respectively arranged on two sides of the center line of the cylinder cover body. Thus, the air inlet channel and the air outlet channel are not influenced mutually.

The utility model has the advantages that:

the utility model provides a pair of cylinder cap structure that exhaust passage interval and cylinder center distance are unequal, this structure promotes cylinder cap overall structure compactness, promotes the engine performance, promotes aftertreatment conversion efficiency promptly, makes the blast pipe structure miniaturized and subtract the weight simultaneously and falls originally, is convenient for arrange annex and aftertreatment device, reduces heat loss and promotes the booster performance.

Drawings

Fig. 1 is a schematic forward view of a cylinder cover structure provided in an embodiment of the present invention, where the distance between the exhaust passages and the distance between the cylinder centers are different;

fig. 2 is a sectional view of a cylinder head structure with different distances between an exhaust passage and a cylinder center according to an embodiment of the present invention from a direction a-a;

in the figure, 1-cylinder cover body, 2-first cylinder, 3-second cylinder, 4-third cylinder, 5-fourth cylinder, 6-first exhaust passage, 7-second exhaust passage, 8-third exhaust passage, 9-fourth exhaust passage, 10-cylinder cover body center line and 11-air inlet passage.

Detailed Description

In order to explain the technical content, the achieved objects and the effects of the present invention in detail, the following description is made in conjunction with the embodiments and the accompanying drawings.

Examples

As shown in fig. 1 and fig. 2, the utility model provides a cylinder cover structure with different exhaust passage spacing and cylinder center distance, which comprises a cylinder cover body 1, and a first cylinder 2, a second cylinder 3, a third cylinder 4 and a fourth cylinder 5 which are arranged in parallel on the cylinder cover body 1 in sequence, and the cylinder center distance between each cylinder and the adjacent cylinder is equal, a first exhaust passage 6, a second exhaust passage 7, a third exhaust passage 8 and a fourth exhaust passage 9 are sequentially arranged on the cylinder cover body 1 in parallel, the first exhaust passage 6 is communicated with the first cylinder 2, the second exhaust passage 7 is communicated with the second cylinder 3, the third exhaust passage 8 is communicated with the third cylinder 4, the fourth exhaust passage 9 is communicated with the fourth cylinder 5, the distance between each air passage and the adjacent air passage is equal, and the distance is smaller than the cylinder center distance between each air cylinder and the adjacent air cylinder.

As shown in fig. 2, the cylinder center distances among the first cylinder 2, the second cylinder 3, the third cylinder 4 and the fourth cylinder 5 which are arranged in parallel in sequence in the cylinder head body 1 are all L1, while the positions of the exhaust port valve openings on the cylinder head body 1 are fixed, but the positions of the exhaust port outlets on the cylinder head can be flexibly arranged according to the arrangement of the whole cylinder, the distances among the first exhaust port 6, the second exhaust port 7, the third exhaust port 8 and the fourth exhaust port 9 are all L2, and the distance between the exhaust ports is smaller than the cylinder center distance L1 between the cylinders, that is, L2 is smaller than L1. As can be seen from fig. 2, L2 is smaller than L1, so that the above structure can reduce the surface area of the exhaust pipe, reduce the radiation heat and air convection heat dissipation of the cabin of the vehicle, facilitate the control of the cabin temperature, and reduce the heat insulation measures of the vehicle; meanwhile, the exhaust pipe is enabled to reduce thermal deformation faults by the aid of the structure, the compactness of the whole structure of the cylinder cover is improved, the performance of an engine is improved, and the post-processing conversion efficiency is improved.

In another embodiment, on the basis of the above embodiments, the cylinder head body 1 is further provided with an intake passage 11, and the intake passage 11, the first exhaust passage 6, the second exhaust passage 7, the third exhaust passage 8 and the fourth exhaust passage 9 are respectively arranged on two sides of a center line 10 of the cylinder head body. So that the heat insulation and heat dissipation between the air inlet 11 and the air outlet are not affected.

Although the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The cylinder cover structure is characterized by comprising a cylinder cover body, a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, wherein the first cylinder, the second cylinder, the third cylinder and the fourth cylinder are sequentially arranged on the cylinder cover body in parallel, the cylinder center distance between each cylinder and the adjacent cylinder is equal, a first exhaust passage, a second exhaust passage, a third exhaust passage and a fourth exhaust passage are further sequentially arranged on the cylinder cover body in parallel, the first exhaust passage is communicated with the first cylinder, the second exhaust passage is communicated with the second cylinder, the third exhaust passage is communicated with the third cylinder, the fourth exhaust passage is communicated with the fourth cylinder, the distance between each air passage and the adjacent air passage is equal, and the distance is smaller than the cylinder center distance between each cylinder and the adjacent cylinder.

2. The cylinder head structure according to claim 1, wherein the cylinder head body is further provided with an inlet channel, and the inlet channel, the first exhaust channel, the second exhaust channel, the third exhaust channel and the fourth exhaust channel are respectively arranged on two sides of a center line of the cylinder head body.