CN112145309A

CN112145309A - Novel diesel engine piston ring

Info

Publication number: CN112145309A
Application number: CN202011242663.6A
Authority: CN
Inventors: 刘娜; 王成诺; 崔长青; 刘鹏; 高媛媛
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2020-12-29

Abstract

The invention relates to the technical field of engine accessories, in particular to a novel diesel engine piston ring which comprises a ring body and a porous iron oxide outer ring, wherein a groove is formed in the outer side of the ring body, a cutting groove is formed in the upper edge of the inner side of the ring body, and chamfers are arranged on the upper edge and the lower edge of the outer side of the ring body. The groove on the outer side of the ring body is used for placing the porous iron oxide outer ring, and the adsorbability of the porous iron oxide is utilized to adsorb engine oil to improve the lubricating capability. The grooving of the inboard top edge of ring body makes the section of gas ring asymmetric, and the ring body is twisted round by the influence of elasticity internal force, makes the upper and lower side of piston ring contact with the upper and lower groove face of annular, prevents the drunkenness of ring body in the annular, reduces the pump oil phenomenon to reduce the impact of piston ring drunkenness to the annular. The upper edge and the lower edge of the outer side of the ring body are chamfered, so that the contact area of the piston ring and the cylinder wall is reduced, and the friction force is reduced. The opening adopts the notch cuttype opening in order to reach best sealed effect, and the opening sets up to the scarf, reduces the wearing and tearing of piston ring in the work.

Description

Novel diesel engine piston ring

Technical Field

The invention relates to the technical field of engine accessories, in particular to a novel diesel engine piston ring.

Background

The piston ring is one of the key parts of the internal combustion engine, has important influence on the economy and the dynamic property of the internal combustion engine, and the performance of the piston ring directly influences the overall performance of the internal combustion engine. With the continuous development of the internal combustion engine technology, the rotating speed and the load of the internal combustion engine are continuously improved, and the requirements on the working performance of piston rings are higher and higher.

The piston ring mainly plays the roles of sealing, heat transfer, oil control and the like in the working process of the internal combustion engine. The frictional resistance between the piston ring and the cylinder liner is an important cause of frictional power loss of the internal combustion engine. The traditional piston ring is transformed by adopting a reasonable structural design, the sealing performance is ensured, the lubricating capacity of the piston ring is improved, the frictional resistance between the piston ring and the cylinder sleeve is reduced, and the piston ring has great significance in the aspect of the optimized design of the piston ring.

Disclosure of Invention

The invention provides a novel diesel engine piston ring, aiming at improving the lubricating capability of the piston ring while ensuring the sealing property of the piston ring.

In order to solve the problems, the solution of the invention is as follows:

the utility model provides a novel diesel engine piston ring, including ring body, recess filler outer loop, be equipped with the recess in the ring body outside, be equipped with the grooving at the inboard top edge of ring body, be equipped with the chamfer at the upper and lower edge in the outside of ring body. The groove on the outer side of the ring body is used for placing a groove filler outer ring, the groove filler outer ring is made of porous iron oxide, and oil is adsorbed by utilizing the adsorbability of the porous iron oxide to improve the lubricating capacity of the piston ring. The upper edge and the lower edge of the outer side of the ring body are chamfered, so that the contact area of the piston ring and the cylinder wall is reduced, and the friction force is reduced. The opening adopts the notch cuttype opening in order to reach the best sealed effect, and the upper boss and the lower boss of opening change the inclined plane boss different with conventional notch cuttype opening, reduce impact and the wearing and tearing of piston ring in the work.

Preferably, a groove is formed in the outer side of the ring body and used for placing an outer ring of the filler.

As optimization, the outer ring material of the groove filler adopts porous iron oxide, and the porous iron oxide adsorbs engine oil, so that the lubricating capability of the piston ring is improved. The porous iron oxide outer ring and the groove arranged on the outer side of the ring body form gapless fit.

Preferably, the upper edge of the inner side of the ring body is provided with a cutting groove which is used for cutting the ring body for one circle.

Preferably, chamfers are arranged on the upper edge and the lower edge of the outer side of the ring body.

As optimization, the upper lug boss and the lower lug boss of the opening of the ring body are changed into inclined plane lug bosses different from the conventional step-shaped opening.

As optimization, the opening gap of the opening of the ring body is 0.3-0.8 mm.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a cross-sectional view of the groove filler outer ring of the present invention installed.

Fig. 4 is a partial structure diagram of the opening of the present invention.

Fig. 5 is a bottom view of a portion of the opening of the present invention.

In the figure: 1-ring body, 2-groove filler outer ring, 3-groove, 4-grooving, 5-chamfer, 6-upper boss, 7-lower boss and 8-ring body opening.

Detailed Description

The invention will be further described with reference to the following detailed description and the accompanying drawings:

as shown in figure 1, the invention provides a novel diesel engine piston ring, which comprises a ring body 1 and a groove filler outer ring 2, wherein a groove 3 is arranged on the outer side of the ring body 1, a cutting groove 4 is arranged on the upper edge of the inner side of the ring body 1, and chamfers 5 are arranged on the upper edge and the lower edge of the outer side of the ring body 1. Wherein, the groove filler outer ring 2 and the groove arranged at the outer side of the ring body 1 form a gapless fit.

As shown in fig. 1, the upper edge of the inner side of the ring body 1 is provided with a cutting groove 4, so that the tensile stress and the compressive stress of the ring body do not act on the same plane during the operation of the internal combustion engine, and a moment is formed to twist the section of the piston ring. As the ring body 1 is twisted, the upper side surface and the lower side surface of the piston ring are contacted with the upper surface and the lower surface of the ring groove, thereby preventing the piston ring from moving up and down in the ring groove, eliminating the oil pumping phenomenon of the piston ring and simultaneously reducing the abrasion caused by the impact of the piston ring on the ring groove.

As shown in fig. 2 and 3, a groove 3 is formed on the outer side surface of the piston ring body 1 for installing a filler outer ring 2, the filler outer ring is made of porous iron oxide, oil is adsorbed by the porous iron oxide due to the adsorbability of the porous iron oxide, and the piston ring moves up and down along with the piston during the operation of the internal combustion engine to form an oil film with uniform thickness between the piston and the cylinder wall, which is beneficial to improving the lubricating function of the piston ring. The upper edge and the lower edge of the outer side of the ring body are provided with chamfers 5 which are used for reducing the contact area between the piston ring and the cylinder wall, thereby reducing the friction force between the piston ring and the cylinder wall and reducing the energy loss caused by the friction between the piston ring and the cylinder wall in the working process of the internal combustion engine.

As shown in fig. 4 and 5, the opening of the piston ring is a stepped opening, so that the sealing performance of the piston ring is ensured, the opening 8 of the ring body is 0.3-0.8 mm, and the upper step 6 and the lower step 7 are changed into inclined bosses different from the conventional stepped opening, so that the impact and the abrasion at the opening of the piston ring are reduced, and the reliability and the service life of the piston ring are improved.

Claims

1. The utility model provides a novel diesel engine piston ring, its characterized in that, includes ring body 1, recess filler outer loop 2 is equipped with recess 3 in the 1 outside of ring body, is equipped with grooving 4 at the top edge of 1 inboard of ring body, is equipped with chamfer 5 at the upper and lower edge in the outside of ring body 1.

2. A new type of piston ring for diesel engine according to claim 1, characterized in that the material of the outer ring 2 of the groove filler is porous iron oxide, which forms a gapless fit with the groove provided on the outside of the ring body 1.

3. A novel diesel piston ring as claimed in claim 1, characterized in that the upper edge of the inside of the ring body 1 is cut around the ring body 1.

4. A novel diesel engine piston ring as claimed in claim 1, wherein the outer upper and lower edges of the ring body 1 are chamfered.

5. The novel diesel piston ring as claimed in claim 1, wherein the upper and lower bosses 6 and 7 of the ring body opening 8 are changed to be inclined plane bosses different from the conventional stepped opening.