CN215521083U

CN215521083U - PVD nose-shaped conical surface piston two rings

Info

Publication number: CN215521083U
Application number: CN202121013333.XU
Authority: CN
Inventors: 郑学云; 王东升; 昂强
Original assignee: Anqing TP Goetze Piston Ring Co Ltd
Current assignee: Anqing TP Goetze Piston Ring Co Ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2022-01-14
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses a PVD nose-shaped conical surface piston two-ring, which comprises a piston ring body, wherein a nose-shaped oil scraping blade is arranged on the outer circular surface of the piston ring body, the outer circular surface of the nose-shaped oil scraping blade is a conical surface, an oil storage tank is arranged between the bottom end part of the nose-shaped oil scraping blade and the lower end surface of the piston ring body, the tip position of the nose-shaped oil scraping blade adopts an arc R transition, and PVD coatings are plated on the arc R transition part and the outer circular surface of the nose-shaped oil scraping blade above the arc R transition part. The piston ring has reasonable structural design, and the wear resistance of the piston ring can be improved by plating the PVD coating on the conical surface, the arc R transition and the outer circular surface of the nose-shaped oil scraping blade at and above the arc R transition, so that the service life of the piston ring is prolonged, and the use requirement is met.

Description

PVD nose-shaped conical surface piston two rings

The technical field is as follows:

the utility model relates to the field of piston ring structures, in particular to a PVD nose-shaped conical surface piston two ring.

Background art:

along with the improvement of the requirements of engine emission, wear resistance and the like, the requirements of piston rings are higher and higher, and the functions of two piston rings are as follows: an auxiliary annular sealing cylinder is arranged on the oil scraping device, and the oil scraping device is started to play an auxiliary oil scraping function; because the nose shape point in traditional structure is sharp-pointed, lead to the friction work loss big, easily collapse and lack, the excircle face easily wears out, along with wearing and tearing increase gradually, excircle honing area and cylinder liner surface area of contact increase inevitably lead to the face pressure to reduce gradually, the effect of frizing has obvious weakening trend to lead to the lubricating oil loss to increase gradually, influence the life of piston ring.

The utility model has the following contents:

the utility model aims to overcome the defects in the prior art and provides a PVD nose-shaped conical piston two ring, aiming to solve the problems in the prior art.

The utility model is realized by the following technical scheme:

the utility model provides a PVD nose shape conical surface piston two rings, including the piston ring body, the outer disc of piston ring body is equipped with nose shape frizing sword, the outer disc of nose shape frizing sword is the conical surface, be equipped with the oil storage tank under the bottom portion of nose shape frizing sword and the piston ring body between the terminal surface, the most advanced position department of nose shape frizing sword adopts circular arc R transition, and all plates the PVD cladding material on the outer disc of nose shape frizing sword of circular arc R transition department and top.

The angle of the outer conical surface of the nose-shaped oil scraping blade is 1-2-30'.

And an arc transition chamfer is also adopted between the upper end part of the nose-shaped oil scraping blade and the upper end surface of the piston ring body.

The upper end surface of the oil storage tank is an inclined surface, and the angle of the inclined surface is 10-15 degrees.

The upper end surface and the inner side surface of the oil storage tank are in arc transition.

The size of the arc R in the X direction is 0.02-0.1mm, and the size of the arc R in the Y direction is 0.04-0.1 mm.

The thickness of the plating layer is about 0.1 mm.

The principle is as follows: the outer circular surface of the nose-shaped oil scraping blade is a conical surface, the position of the tip of the nose-shaped oil scraping blade is in circular arc R transition, and the conical surface and the circular arc R transition are adopted, so that the pressure applied to the cylinder wall can be accurately controlled in the lower stroke, and the acting force is greatly reduced during the upper stroke, so that the effect of protecting the cylinder wall is effectively achieved. And the lower stroke pressure can more effectively push the cylinder lubricating oil back to the oil pan without entering the combustion chamber, the lubricating oil is pushed out from the combustion chamber and the lubricating oil consumption is reduced, so that the ring tension can be improved, the friction is reduced, the friction power loss is reduced after the ring friction is reduced, the better fuel economy and less carbon dioxide emission are realized, the carbon accumulation of key parts (such as the upper part of a compression ring) of the piston is reduced, and the lubricating oil consumption can be always effectively reduced in the whole service life cycle of the engine. Meanwhile, the PVD coating is plated on the arc R transition part and the outer circular surface of the nose-shaped oil scraping blade above the arc R transition part, so that the wear resistance of the piston ring can be improved, the service life of the piston ring is prolonged, and the use requirement is met.

The utility model has the advantages that:

the piston ring has reasonable structural design, and the wear resistance of the piston ring can be improved by plating the PVD coating on the conical surface, the arc R transition and the outer circular surface of the nose-shaped oil scraping blade at and above the arc R transition, so that the service life of the piston ring is prolonged, and the use requirement is met.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention.

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

Reference numerals:

1. a piston ring body; 2. a nose-shaped oil scraping edge; 3. an oil storage tank; 4. and (4) performing PVD coating.

The specific implementation mode is as follows:

see the drawings.

The utility model provides a two rings of PVD nose shape conical surface piston, including piston ring body 1, the outer disc of piston ring body 1 is equipped with nose shape frizing sword 2, and the outer disc of nose shape frizing sword 2 is the conical surface, is equipped with oil storage tank 3 under the bottom portion of nose shape frizing sword 2 and the piston ring body between the terminal surface, and the most advanced position department of nose shape frizing sword 2 adopts circular arc R transition, and all plates PVD cladding material 4 on the outer disc of nose shape frizing sword of circular arc R transition department and top.

Further, the outer circular conical surface angle θ of the nose-shaped oil scraping blade 2 is 1 ° 30 '-2 ° 30'. An arc transition chamfer is also adopted between the upper end part of the nose-shaped oil scraping edge 2 and the upper end surface of the piston ring body 1.

Furthermore, the upper end surface of the oil storage tank is an inclined surface, and the angle gamma of the inclined surface is 10-15 degrees. The upper end surface and the inner side surface of the oil storage tank 3 are in arc transition.

Furthermore, the size of the arc R in the X direction is 0.02-0.1mm, and the size of the arc R in the Y direction is 0.04-0.1 mm. The thickness of the PVD coating 4 is about 0.1 mm.

When the method is used for machining, the nose shape, the R arc and the outer conicity are formed at one time through improvement of a cutter, a program, parameters and the like in the fine external machining; the high-precision requirements of the X-direction size and the Y-direction size of the R arc of the nose-shaped tip are guaranteed, so that the requirement of mass production of piston rings can be met, the overall performance is improved after the piston ring is used, and the piston ring has the advantages of better fuel economy, reduced carbon dioxide emission, prolonged service life of engine oil and the like, engine bench tests prove that the oil consumption can be reduced by 50% at most and the friction can be reduced by more than 15%, which means better fuel economy, less carbon dioxide emission and reduction of key parts (such as a compression ring) of the piston

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a PVD nose shape conical surface piston two-ring, including piston ring body (1), its characterized in that: the outer disc of piston ring body (1) is equipped with nose shape frizing sword (2), the outer disc of nose shape frizing sword (2) is the conical surface, be equipped with oil storage tank (3) under the bottom portion of nose shape frizing sword (2) and the piston ring body between the terminal surface, the most advanced position department of nose shape frizing sword (2) adopts circular arc R transition, and all plated PVD cladding material (4) on the outer disc of nose shape frizing sword of circular arc R transition department and top.

2. A PVD nasal taper piston two ring as recited in claim 1, wherein: the angle of the outer circular conical surface of the nose-shaped oil scraping blade (2) is 1-2-30'.

3. A PVD nasal taper piston two ring as recited in claim 1, wherein: and an arc transition chamfer is also adopted between the upper end part of the nose-shaped oil scraping blade (2) and the upper end surface of the piston ring body (1).

4. A PVD nasal taper piston two ring as recited in claim 1, wherein: the upper end surface of the oil storage tank is an inclined surface, and the angle of the inclined surface is 10-15 degrees.

5. A PVD nose cone piston two ring as defined in claim 4, wherein: the upper end surface and the inner side surface of the oil storage tank (3) are in arc transition.

6. A PVD nasal taper piston two ring as recited in claim 1, wherein: the size of the arc R in the X direction is 0.02-0.1mm, and the size of the arc R in the Y direction is 0.04-0.1 mm.

7. A PVD nasal taper piston two ring as recited in claim 1, wherein: the thickness of the PVD coating (4) is about 0.1 mm.