CN105587423A

CN105587423A - Wear resistant ring of engine cylinder liner

Info

Publication number: CN105587423A
Application number: CN201610142335.6A
Authority: CN
Inventors: 王海军; 郭鹏鹏; 杨国敏; 陈小雨; 刘志刚; 阎涛
Original assignee: GKN ZHONGYUAN CYLINDER LINER Co
Current assignee: GKN ZHONGYUAN CYLINDER LINER Co
Priority date: 2016-03-14
Filing date: 2016-03-14
Publication date: 2016-05-18

Abstract

A wear resistant ring of an engine cylinder liner comprises a thin-wall ring structure body, an inner hole is formed in the middle part of the thin-wall ring structure body, chamfers are arranged at the upper end and the lower end of the outer round surface of the thin-wall ring structure body, and 2 to 5 ring-shaped grooves are evenly distributed from the top to the bottom and on the outer round surface between the upper and the lower chamfers in parallel. The invention discloses the wear resistant ring of the engine cylinder liner, the 2 to 5 evenly distributed ring-shaped grooves, which are 1 to 3mm in widths and 0.2mm in depths, are formed in the outer round surface of the wear resistant ring, and the ring-shaped grooves mainly play the effect of being convenient for the assembling of the wear resistant ring and a cylinder liner wear resistant ring slot; identical 45-degree chamfers are designed at the upper end and the lower end of the outer round surface of the wear resistant ring, the chamfers are 0.8 to 2 mm in dimension, and the chamfers play the effect of preventing the wear resistant ring from being in interference with the cylinder liner wear resistant ring slot; right angles are kept at the upper and the lower ends of an inner round surface, so that excess oil is prevented from being participated in burning during the up going of a piston ring.

Description

Air cylinder sleeve of engine wearing ring

Technical field

The present invention relates to a kind of air cylinder sleeve of engine wearing ring.

Background technology

Wearing ring is a thin-walled annular structure, is embedded in the large end position of air cylinder sleeve of engine endoporus, and wall thickness is generally 2-4mm; Height determines by the concrete technical parameter of engine, and upper end and cylinder jacket seam are put down, lower surface plane 1-3mm on top piston ring during higher than engine piston top dead centre; Wearing ring endoporus and piston crown are matched in clearance, do not participate in friction, so wearing ring material is generally chosen casting pig material, the low processability of cost is good; Wearing ring outer wall and the wear-resistant annular groove of cylinder jacket head are little matched in clearance.

Along with environmental requirement is more and more higher, being applied in a lot of new technologies aspect engine discharge in recent years, is the most direct means that take effect most, that cost is minimum but use wearing ring technology. The Main Function of wearing ring is: it is descending by piston crown that 1, obstruction engine does the high-temperature high-pressure fuel gas in man-hour; 2, because the diameter of bore of wearing ring is less than cylinder cover inner hole diameter, so the unnecessary machine oil that can hinder piston stroking upward time, piston ring above pushes away participates in burning; 3, in the time that the carbon distribution of wearing ring inwall runs up to certain thickness, when piston stroking upward, piston crown can blow out the carbon distribution of wearing ring inwall outside engine body, reduces carbon distribution and falls into the abrasive wear that air cylinder sleeve of engine causes.

Summary of the invention

The object of the present invention is to provide a kind of air cylinder sleeve of engine wearing ring.

Based on above-mentioned purpose, the present invention takes following technical scheme:

Air cylinder sleeve of engine wearing ring, comprise thin-walled annular structural body; thin-walled annular structural body middle part forms an endoporus, and the upper and lower two ends of thin-walled annular structural body periphery are equipped with chamfering, parallel uniform 2 ~ 5 annular recess from top to bottom on the periphery between upper and lower chamfering.

The chamfering at the upper and lower two ends of described thin-walled annular structural body periphery is identical, be 45 ° of chamferings, and chamfer dimesion is 0.8-2mm.

The width of described annular recess is 1-3mm, and the degree of depth is 0.2mm.

The invention discloses a kind of air cylinder sleeve of engine wearing ring, characteristic feature is: wearing ring body is thin-walled annular structure, and wall thickness is 2-5mm; Inner headed face is non-working surface, is matched in clearance with piston crown, does not participate in friction, without reticulate structure; Wearing ring diameter of bore is than the little 0.3-1.2mm of cylinder cover inner hole diameter; The wear-resistant annular groove of periphery and air cylinder sleeve of engine is little matched in clearance, is processed with the annular recess of 2-5 uniform width 1-3mm degree of depth 0.2mm on periphery, and the Main Function of annular recess is the assembling of being convenient to wearing ring and the wear-resistant annular groove of cylinder jacket; Wearing ring height design is 6-20mm, is specifically determined by engine parameter, and upper end and cylinder jacket seam are flat, lower surface plane 1-3mm on top piston ring during higher than engine piston top dead centre; Be designed with 45 ° of identical chamferings at wearing ring periphery upper and lower side, chamfer dimesion is 0.8-2mm, and the effect of chamfering is the interference of avoiding wearing ring and the wear-resistant annular groove of cylinder jacket; That the upper and lower two ends of inner headed face will retain right angle, can not chamfering, the object that retains right angle is to hinder the unnecessary machine oil of piston ring when up to participate in burning.

Brief description of the drawings

Fig. 1 is structural representation of the present invention.

Detailed description of the invention

As shown in Figure 1, air cylinder sleeve of engine wearing ring, comprise thin-walled annular structural body 1; thin-walled annular structural body 1 middle part forms an endoporus 4; the thin-walled annular structural body 1 upper and lower two ends of periphery are equipped with chamfering 3, parallel uniform 2 ~ 5 annular recess 2 from top to bottom on the periphery between upper and lower chamfering.

The chamfering 3 at the described thin-walled annular structural body 1 upper and lower two ends of periphery is identical, is 45 ° of chamferings, and chamfering 3 sizes are 0.8-2mm.

The width of described annular recess 2 is 1-3mm, and the degree of depth is 0.2mm.

The invention discloses a kind of air cylinder sleeve of engine wearing ring, comprise thin-walled annular structural body 1, wall thickness is 2-5mm; Inner headed face is non-working surface, is matched in clearance with piston crown, does not participate in friction, without reticulate structure; Endoporus 4 diameters are than the little 0.3-1.2mm of cylinder cover inner hole diameter; The wear-resistant annular groove of periphery and air cylinder sleeve of engine is little matched in clearance, is processed with the annular recess 2 of 2-5 uniform width 1-3mm degree of depth 0.2mm on periphery, and the Main Function of annular recess 2 is assemblings of being convenient to wearing ring and the wear-resistant annular groove of cylinder jacket; Wearing ring height design is 6-20mm, is specifically determined by engine parameter, and upper end and cylinder jacket seam are flat, lower surface plane 1-3mm on top piston ring during higher than engine piston top dead centre; Be designed with 45 ° of identical chamferings at wearing ring periphery upper and lower side, chamfering 3 is of a size of 0.8-2mm, and the effect of chamfering 3 is interference of avoiding wearing ring and the wear-resistant annular groove of cylinder jacket; The upper and lower two ends of inner headed face will retain right angle, can not chamferings, and the object that retains right angle is to hinder the unnecessary machine oil of piston ring when up to participate in burning.

Claims

1. air cylinder sleeve of engine wearing ring, comprise thin-walled annular structural body; thin-walled annular structural body middle part forms an endoporus; it is characterized in that: the upper and lower two ends of thin-walled annular structural body periphery are equipped with chamfering, parallel uniform 2 ~ 5 annular recess from top to bottom on the periphery between upper and lower chamfering.

2. air cylinder sleeve of engine wearing ring according to claim 1, is characterized in that: the chamfering at the upper and lower two ends of described thin-walled annular structural body periphery is identical, be 45 ° of chamferings, and chamfer dimesion is 0.8-2mm.

3. air cylinder sleeve of engine wearing ring according to claim 1, is characterized in that: the width of described annular recess is 1-3mm, and the degree of depth is 0.2mm.