CN212337466U

CN212337466U - Cylinder block structure

Info

Publication number: CN212337466U
Application number: CN202020545773.9U
Authority: CN
Inventors: 丘道龙; 沈捷; 班智博; 肖刚
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-01-12
Anticipated expiration: 2030-04-14

Abstract

The utility model discloses a cylinder block structure relates to diesel engine technical field, including cylinder block body and the cylinder hole (1) that are located two above on the cylinder block body cylinder hole (1) hole end face sets up sealed face (7), and is adjacent on the cylinder block body cylinder hole (1) communicates each other. The device provided by the utility model solve the big and difficult problem that is unfavorable for oil-gas balance of cylinder block jar hole processing structure degree of difficulty.

Description

Cylinder block structure

Technical Field

The utility model relates to a diesel engine technical field especially relates to a cylinder block structure.

Background

With the improvement of the requirements of the social and economic activities on the dynamic property, the economy, the adaptability and the like of the vehicle, the light weight, the safety, the applicability, the assembly property and the maintainability of the vehicle and parts thereof become a promotion direction which gets a great attention. The existing diesel engine cylinder block has a circular cylinder hole structure, the traditional cylinder hole is single in shape, thick and heavy in material, heavy in mass and high in requirement on the number of finish machining surfaces, so that a cutter is easy to wear during machining. The cylinder hole is easy to deform after the cylinder sleeve is installed due to the fact that the cylinder hole is unqualified in size processing, and performance and reliability of an engine are affected. And when the engine works, the lubricating system can generate oil mist in a crankcase and a valve chamber, and simultaneously, oil gas with certain pressure can be formed in the inner cavity of the engine due to micro leakage of air pressure of the air cylinder. Therefore, the traditional engine crankcase and the valve chamber of the cylinder cover are communicated with each other through a channel, oil and gas are communicated with each other and are balanced and then communicated with the breathing system, the traditional engine is provided with the channel on the cylinder body and limited by the structure of the circular cylinder hole, no channel exists between the cylinder and the cylinder, the traditional engine is communicated only by the group part (the upper part of an oil pan) of the crankcase of the cylinder body, the communication of the channel is not large enough, the problem of unbalanced oil and gas is easily caused, and the internal oil and gas balance.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a cylinder block structure solves the big and difficult problem that is unfavorable for oil-gas balance of cylinder block jar hole processing structure degree of difficulty.

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

the cylinder block structure comprises a cylinder block body and more than two cylinder holes positioned on the cylinder block body, wherein a sealing surface is arranged on the end face of each cylinder hole in the cylinder block body, and the adjacent cylinder holes are communicated with each other.

Furthermore, a tappet cavity which is corresponding to the cylinder hole and is communicated with the cylinder hole is also arranged on the sealing surface on the same side of each cylinder hole, and the adjacent tappet cavities are communicated with each other.

Further, bolt mounting holes are formed in two sides of the position where the adjacent cylinder holes are communicated.

Furthermore, a transverse reinforcing rib is arranged at the position adjacent to the cylinder hole communication part along the central connecting line direction of the bolt mounting hole.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. in the cylinder block structure provided by the utility model, adjacent cylinder holes in the cylinder block body are communicated to form a first channel beneficial to oil-gas balance; meanwhile, the structure does not need to finish machine the cylinder hole, does not need to install the cylinder sleeve, avoids the trouble of installing the cylinder sleeve, only reserves the processing of a sealing surface installed with the cylinder cover, has simple structure, is easy to process, does not have the deformation of the cylinder hole, and greatly facilitates the assembly and the reliability of the engine;

2. the cylinder holes are communicated with tappet cavities configured in the cylinder holes, the adjacent tappet cavities are communicated, and the communicated tappet cavities form a second channel beneficial to oil-gas balance; the tappet cavity structure reduces the processing area of the sealing surface, the cylinder body is easier to process, the heat dissipation capacity of the cylinder body is enhanced, and the weight of the cylinder body is reduced.

3. The transverse reinforcing ribs are arranged in the first passages of the adjacent cylinder holes, so that the rigidity of the cylinder block can be improved;

drawings

FIG. 1 is a perspective view of a cylinder block according to an embodiment of the present invention;

fig. 2 is a top view of a cylinder block structure according to an embodiment of the present invention;

fig. 3 is a cross-sectional view taken along line B-B of fig. 2 according to the present invention.

In the figure, 1 is a cylinder hole, 2 is a first sealing ring, 3 is a tappet cavity, 4 is a second sealing ring, 5 is a bolt mounting hole, 6 is a reinforcing rib, and 7 is a sealing surface.

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.

Fig. 1 is a perspective view of a cylinder block structure, which is assembled with a composite cylinder head structure, and the structure only provides a cylinder head mounting frame and a sealing surface. Other cylinder liners or cylinder bores are machined centrally on the composite cylinder head.

Referring to fig. 2 and 3, the cylinder block structure comprises a cylinder block body, 4 cylinder holes 1 and bolt mounting holes 5, wherein the 4 cylinder holes 1 are formed in the cylinder block body, the bolt mounting holes 5 are used for connecting a composite cylinder head and the cylinder block structure, a sealing surface 7 is arranged on the end face of each cylinder hole 1 in the cylinder block body, and adjacent cylinder holes 1 are communicated with each other to form a first channel which is beneficial to oil-gas balance. The structure does not need to finish machine the cylinder hole and install the cylinder sleeve, avoids the trouble of installing the cylinder sleeve, only reserves the processing of the sealing surface installed with the cylinder cover, has simple structure, is easy to process, does not have the deformation of the cylinder hole, and greatly facilitates the assembly and the reliability of the engine.

Corresponding tappet chambers 3 which are communicated with the cylinder bores 1 are also arranged on the sealing surface 7 on the same side of each cylinder bore 1, and the adjacent tappet chambers 3 are communicated with each other. The tappet chambers 3 thus communicating form a second passage which is advantageous for the oil-gas balance. The tappet cavity 3 structure reduces the finish machining area of the sealing surface, the cylinder body is easier to machine, the heat dissipation capacity of the cylinder body is enhanced, and the weight of the cylinder body is reduced.

The outer edge of the revolution surface of each cylinder hole 1 is provided with a first sealing ring 2 for sealing the cylinder hole 1, and the outer edge of the revolution surface of each tappet cavity 3 is provided with a second sealing ring 4 for sealing the tappet cavity 3.

Preferably, the transverse reinforcing ribs 6 are arranged in the first channel between the adjacent cylinder holes 1, so that the rigidity of the cylinder block can be improved, in the embodiment, bolt mounting holes 5 are arranged on two sides of the communication part of the adjacent cylinder holes 1, and the reinforcing ribs 6 are just positioned on the central connecting line of the bolt mounting holes 5 on the two sides, so that the forced deformation of the bolt mounting holes 6 of the cylinder block can be further avoided.

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. A cylinder block structure comprises a cylinder block body and more than two cylinder holes (1) positioned on the cylinder block body, and is characterized in that a sealing surface (7) is arranged on the end face of each cylinder hole (1) on the cylinder block body, and the adjacent cylinder holes (1) are communicated with each other.

2. The cylinder block structure according to claim 1, characterized in that corresponding tappet chambers (3) that communicate with the cylinder bore (1) are further provided on the sealing surface (7) on the same side of each cylinder bore (1), and adjacent tappet chambers (3) communicate with each other.

3. The cylinder block structure according to claim 1 or 2, characterized in that bolt mounting holes (5) are provided adjacent to both sides of the communication portion of the cylinder bore (1).

4. The cylinder block structure according to claim 3, characterized in that a lateral bead (6) is provided in the direction of the line connecting the centers of the bolt-mounting holes (5) at the communication portion between the adjacent cylinder bores (1).