CN216477598U

CN216477598U - Piston ring suitable for cylinder

Info

Publication number: CN216477598U
Application number: CN202122384938.6U
Authority: CN
Inventors: 覃文; 莫昭勤; 张振平; 刘红武; 罗威; 粟荣锦
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-05-10
Anticipated expiration: 2031-09-29

Abstract

The embodiment of the application provides a piston ring suitable for cylinder for improve the leakproofness of cylinder. The method of the embodiment of the application comprises the following steps: the piston ring main part, the piston ring main part is assembled in the seal groove of cylinder, the cylinder sets up first annular, second annular and third annular, the piston ring main part is applicable to first annular, the piston ring main part sets up the clearance of closing, the piston ring main part is just turning round the structure a little, the piston ring main part is the wedge structure of surface width in internal surface, the cylinder includes piston, piston ring group and cylinder liner, piston ring group includes first piston ring, second piston ring and third piston ring, the piston ring main part is applicable to first piston ring.

Description

Piston ring suitable for cylinder

Technical Field

The embodiment of the application relates to the field of engines, in particular to a piston ring applicable to a cylinder.

Background

Along with the development of science and technology, the natural environment is influenced by the industrial development which is promoted together, because the working capacity requirement of the machine in the production process is improved, the power cores such as the engine are also iterated rapidly, and in order to reduce the influence of the exhaust gas of the engine on the environment, the oil gas emission of the engine is stricter while the emission of the engine is upgraded.

In the prior art, high-pressure combustible mixture and burned gas in the combustion chamber leak into the crankcase more or less through the gap between the piston group and the cylinder during engine operation, resulting in blow-by gas. The blow-by amount of the engine directly influences the efficiency of the oil-gas separation device of the engine, so that the oil-gas emission of the engine is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a piston ring suitable for cylinder for improve the seal of cylinder.

The application provides a piston ring suitable for cylinder includes: piston ring main part, the piston ring main part is assembled in the seal groove of cylinder, the cylinder sets up first annular, second annular and third annular, the piston ring main part is applicable to first annular, the piston ring main part sets up the closed gap, the piston ring is mainly just turning round the structure a little, the piston ring main part is the wedge structure of surface width in internal surface, the cylinder includes piston, piston ring group and cylinder liner, piston ring group is including first piston ring, second piston ring and third piston ring, the piston ring main part is applicable to first piston ring

Optionally, the upper half part of the inner side surface of the piston ring main body is provided with a chamfer.

Optionally, the piston ring body has an inner wall width smaller than an outer wall width of the piston ring body.

Optionally, the spacing of the closed gap is between 0.27mm and 0.35 mm.

Optionally, the maximum spreading value of the closed gap is 34 mm.

Optionally, the piston ring body has a diameter of 105 mm.

Optionally, the diameter of the piston ring body is 8 to 9 times the radial thickness of the piston ring body.

Optionally, the piston ring main body is made of cast iron.

According to the technical scheme, the piston ring body is forced to move downwards to the bottom of the piston ring through the micro positive torsion structure, so that the surface pressure of the piston ring body and the cylinder is increased, and the piston ring and the cylinder hole are sealed more tightly.

Drawings

FIG. 1 is a front view of a piston ring suitable for use in a cylinder in an embodiment of the present application;

FIG. 2 is a partial cross-sectional view of a piston ring suitable for use in a cylinder in an embodiment of the present application;

FIG. 3 is a cross-sectional view of a cylinder of a piston ring suitable for use in a cylinder in an embodiment of the present application;

figure 4 a schematic view of a cylinder of a piston ring suitable for use in a cylinder in an embodiment of the present application.

Detailed Description

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a piston ring suitable for cylinder for improve the leakproofness of cylinder.

Referring to fig. 1 to 4, an embodiment of the present application provides a piston ring for a cylinder, which is used to improve the tightness of the cylinder.

The application provides a piston ring suitable for cylinder includes: piston ring main part 1, piston ring main part 1 assembles in the seal groove of cylinder 2, cylinder 2 sets up first annular 21, second annular 22 and third annular 23, piston ring main part 1 is applicable to first annular 21, piston ring main part 1 sets up closed gap 11, piston ring main part 1 is just turning round the structure a little, piston ring main part 1 is the wedge structure of surface width in internal surface, cylinder 2 includes piston, piston ring group and cylinder liner, piston ring group includes first piston ring, second piston ring and third piston ring, piston ring main part 1 is applicable to first piston ring.

In practical cases, the piston ring is used for ensuring the sealing performance of the piston, in the embodiment of the application, the piston ring main body 1 is specifically arranged at the first ring groove 21 of the cylinder 2, the piston ring main body adopts a micro-positive torsion structure, the piston ring is forced to move downwards to the bottom of the piston ring, the surface pressure is increased, and the piston ring is sealed with the cylinder hole more tightly.

Optionally, the upper half part of the inner side surface of the piston ring body 1 is provided with a chamfer.

Specifically, the inner side surface of the piston ring body 1 is chamfered at the upper part to reduce the force bearing area of the piston ring

Optionally, the width of the inner wall of the piston ring body 1 is smaller than the width of the outer wall of the piston ring body.

Specifically, the inner wall width of piston ring main part is less than the outer wall width, and when the piston ring main part atress, the piston ring atress moved to the piston ring bottom down, and the working face pressure increases to it is inseparabler to make piston ring and jar hole seal.

Optionally, the spacing of the closed gap 11 is between 0.27mm and 0.35 mm.

Specifically, the closing gap is set to be 0.27mm to 0.35mm, and the value is smaller than the value set by other piston ring closing gaps, so that the purposes of reducing the air blowby amount from the fracture and reducing the air leakage amount of the piston ring by reducing the closing gap are achieved.

Optionally, the maximum opening value of the closed gap 11 is 34 mm.

Specifically, when the piston ring body 1 is assembled to the cylinder 2, the piston ring body needs to be expanded, and when the expansion value exceeds 34mm, the piston ring body is deformed to cause air leakage.

Optionally, the piston ring body 1 has a diameter of 105 mm.

Specifically, the piston ring body 1 has a diameter of 105mm for fitting the cylinder 2.

Optionally, the diameter of the piston ring body 1 is 8 to 9 times the radial thickness of the piston ring body 1.

Specifically, the radial thickness of the piston ring body needs to be placed in a first ring groove of the cylinder, but an overlarge gap cannot exist, and when the radial thickness of the piston ring body is 8-9 times of the diameter of the piston ring body, the piston ring body and a cylinder hole are sealed more tightly.

Optionally, the piston ring main body is made of cast iron.

Specifically, the cast iron material can prolong the service life of the piston ring main body.

It is intended that the foregoing description of the disclosed embodiments enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A piston ring adapted for use in a cylinder, comprising: the piston ring main part, the piston ring main part is assembled in the seal groove of cylinder, the cylinder sets up first annular, second annular and third annular, the piston ring main part is applicable to first annular, the piston ring main part sets up the clearance of closing, the piston ring main part is just turning round the structure a little, the piston ring main part is the wedge structure of surface width in internal surface, the cylinder includes piston, piston ring group and cylinder liner, piston ring group includes first piston ring, second piston ring and third piston ring, the piston ring main part is applicable to first piston ring.

2. The piston ring as set forth in claim 1 wherein said upper half of said inner side of said piston ring body is chamfered.

3. The piston ring as set forth in claim 1 or 2 wherein said piston ring body has an inner wall width less than an outer wall width of said piston ring body.

4. Piston ring according to claim 1 or 2, characterized in that the spacing of the closed gap is between 0.27mm and 0.35 mm.

5. Piston ring according to claim 1 or 2, characterized in that the maximum spreading value of the closed gap is 34 mm.

6. Piston ring according to claim 1 or 2, characterized in that the diameter of the piston ring body is 105 mm.

7. The piston ring as set forth in claim 6 wherein said piston ring body has a diameter of from 8 to 9 times a radial thickness of said piston ring body.

8. The piston ring as set forth in claim 1 or 2 wherein said piston ring body is cast iron.