Efficient deposited carbon cleaning and protecting piston ring

Abstract

The utility model relates to an efficient deposited carbon cleaning and protecting piston ring which comprises an annular base, a sealing ring and an elastic piece, and an installation groove is formed in the outer ring face of the annular base in a circumferential mode. The sealing ring is slidably connected with the mounting groove in the radial direction of the annular base. And the elastic sheet is elastically supported between the inner ring surface of the sealing ring and the bottom surface of the mounting groove. According to the piston ring, the function of a traditional solid second piston ring can be achieved through the piston ring, and on the premise that the annular base in clearance fit with the middle annular groove of the piston loses elastic sealing even if the moving area is limited by carbon deposition, effective sealing can be achieved between the sealing ring in elastic sliding connection with the annular base and the wall of an air cylinder. The technical problem that elasticity of a traditional piston ring loses efficacy due to the fact that an effective sealing gap between carbon deposition and an air cylinder wall is lost is solved.

Description

Technical Field

[0001] This utility model relates to the fields of mechanical engineering and engine technology, and more specifically to a high-efficiency carbon deposit cleaning and protection piston ring. Background Technology

[0002] Piston rings are a key component in an engine. Their main function is to seal the cylinder, prevent gas leakage, and reduce wear between the piston and the cylinder wall.

[0003] During engine operation, there are certain gaps between the piston rings and the piston (such as side clearance, back clearance, and end clearance). Although these gaps help the piston rings move normally, they can also easily lead to carbon buildup. The piston rings' pumping action will carry a small amount of engine oil into the combustion chamber. At high temperatures, the engine oil cokes and solidifies to form carbon deposits. Carbon deposits will reduce or even completely eliminate the side clearance and back clearance of the piston rings, causing the piston rings to lose elasticity and become unable to effectively scrape the engine oil off the cylinder walls, resulting in carbon buildup.

[0004] Therefore, how to provide a new type of anti-cylinder scoring piston ring that ensures a clearance fit with the piston while allowing relative sliding between its contact end with the cylinder wall and the base, thus preventing the piston ring from losing its elasticity due to carbon buildup and the loss of an effective sealing gap with the cylinder wall, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides a high-efficiency carbon deposit cleaning and protection piston ring, which aims to solve the technical problem of elastic failure of the above-mentioned traditional piston rings due to the loss of effective sealing gap between carbon deposits and cylinder walls.

[0006] A high-efficiency carbon deposit cleaning piston ring, comprising:

[0007] The ring-shaped base has mounting grooves arranged around its perimeter on its outer ring surface.

[0008] A sealing ring is slidably connected to the mounting groove along the radial direction of the annular base;

[0009] The spring sheet provides elastic support between the inner surface of the sealing ring and the bottom surface of the mounting groove.

[0010] Through the above technical solution, this utility model improves the second piston ring on the piston by dividing it into two parts: an annular base and a sealing ring that is elastically slidably connected to the annular base. During use, it can achieve the function of a traditional solid second piston ring. Even if the annular base, which is fitted with the middle ring groove of the piston, loses its elastic seal due to carbon buildup, the sealing ring that is elastically slidably connected to the annular base can still achieve an effective seal with the cylinder wall. It has the characteristics of strong adaptability, efficient removal of cylinder wall oil, and reduction of carbon buildup.

[0011] Preferably, the outer ring surface of the sealing ring is arranged at an angle to its axis, and its sealing gap gradually increases from top to bottom.

[0012] Preferably, the open end of the sealing ring is clearance-fitted with the side wall of its corresponding mounting groove.

[0013] Preferably, the upper and lower surfaces of the sealing ring are in a sealing fit with the side wall of the corresponding mounting groove; the spring is a wavy ring.

[0014] Preferably, the outer surface of the sealing ring is coated.

[0015] Preferably, the coating on the outer surface of the sealing ring is formed using the HiP1MS process.

[0016] Preferably, the spring is securely connected to the bottom surface of the mounting groove.

[0017] Preferably, the spring is laser welded to the bottom surface of the mounting groove.

[0018] Preferably, the annular base is installed in the middle annular groove among the three annular grooves on the cylindrical surface of the cylindrical piston.

[0019] Preferably, there is a clearance fit between the annular base and the intermediate annular groove.

[0020] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a high-efficiency carbon deposit cleaning piston ring, which has the following beneficial effects: the elastic support of the spring can ensure that the sealing ring is always in close contact with the cylinder wall. Even if there is a slight gap change during the piston movement, the elastic adjustment of the spring can maintain a good sealing effect, effectively preventing oil leakage into the combustion chamber and reducing the generation of carbon deposits. Attached Figure Description

[0021] Figure 1 A three-dimensional schematic diagram of a high-efficiency carbon deposit cleaning and protection piston ring provided by this utility model;

[0022] Figure 2 An exploded view of a high-efficiency carbon deposit cleaning and protection piston ring provided by this utility model;

[0023] Figure 3 A partial cross-sectional view of a high-efficiency carbon deposit cleaning and protection piston ring provided by this utility model;

[0024] Figure 4 for Figure 3 A magnified view of a portion at point A;

[0025] Figure 5 for Figure 3 A magnified view of a portion at point B;

[0026] Figure 6 A partial cross-sectional view of an efficient carbon deposit cleaning piston ring and a cylindrical piston assembly provided by this utility model;

[0027] Figure 7 for Figure 6 A magnified view of a portion of point C.

[0028] Wherein: 1-annular base; 2-sealing ring; 3-spring; 10-cylindrical piston; 11-mounting groove; 101-intermediate ring groove. Detailed Implementation

[0029] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0030] See appendix Figure 1-7 This utility model discloses a high-efficiency carbon deposit cleaning piston ring, including: an annular base 1, a sealing ring 2 and a spring 3;

[0031] The outer ring surface of the annular base 1 is provided with mounting grooves 11 arranged in a circumferential pattern;

[0032] The sealing ring 2 is slidably connected to the mounting groove 11 along the radial direction of the annular base 1;

[0033] The spring 3 is elastically supported between the inner ring surface of the sealing ring 2 and the bottom surface of the mounting groove 11.

[0034] In some embodiments, the outer annular surface of the sealing ring 2 is arranged obliquely to its axis, and its sealing gap gradually increases from top to bottom. Therefore, the obliquely arranged outer annular surface and the gradually increasing sealing gap design allow for better and more effective scraping of oil from the cylinder wall during piston descent, thereby reducing oil consumption and carbon deposit formation in the combustion chamber, further improving engine reliability and service life.

[0035] In other embodiments, the open end of the sealing ring 2 is clearance-fitted with the side wall of its corresponding mounting groove 11.

[0036] In one embodiment, the upper and lower surfaces of the sealing ring 2 are sealed to the sidewalls of its corresponding mounting groove 11; the spring is a wavy ring. Thus, the wavy spring design provides better elasticity and fatigue resistance. During piston movement, the wavy spring 3 better adapts to the movement of the sealing ring, providing stable elastic support and ensuring that the sealing ring remains in close contact with the cylinder wall. Even after prolonged operation, it maintains a good sealing effect. The structural design of the wavy spring 3 provides a larger range of elastic deformation within a limited space, while also improving the structural strength of the spring 3, enabling it to withstand greater pressure and impact, thus enhancing the overall performance and reliability of the piston ring.

[0037] In one embodiment, the outer surface of the sealing ring 2 is coated.

[0038] In some embodiments, the coating on the outer surface of the sealing ring 2 is formed using the HiPl MS process. Therefore, HiPl MS (High Power Pulsed Magnetron Sputtering) is an advanced coating technology capable of forming high-quality, high-hardness, and high-adhesion coatings. Coatings formed using this process exhibit better wear resistance, corrosion resistance, and oxidation resistance, significantly improving the performance and service life of the sealing ring.

[0039] In this embodiment, the spring piece 3 is securely connected to the bottom surface of the mounting groove 11. This secure connection ensures a tight fit between the spring piece 3 and the bottom surface of the mounting groove 11, preventing the spring piece 3 from loosening or falling off during use, and improving the overall structural stability and reliability of the piston ring.

[0040] In some specific embodiments, the spring piece 3 is laser-welded to the bottom surface of the mounting groove 11. This secure connection ensures a tight fit between the spring piece 3 and the bottom surface of the mounting groove 11, preventing the spring piece 3 from loosening or falling off during use, and improving the overall structural stability and reliability of the piston ring.

[0041] In some other embodiments, the annular base 1 is mounted in the middle annular groove 101 of the three annular grooves on the cylindrical surface of the cylindrical piston 10. Therefore, mounting the annular base 1 in the middle annular groove 101 allows for better utilization of the piston's annular groove space and optimizes the piston ring layout. The position of the middle annular groove 101 is relatively stable and less affected by piston movement and temperature changes, which is beneficial for improving the working stability and sealing performance of the piston rings.

[0042] In some other specific embodiments, the annular base 1 and the intermediate annular groove 101 are fitted with a clearance.

[0043] The specific principle and usage method of the high-efficiency carbon deposit cleaning piston ring provided in this embodiment are as follows:

[0044] During use, it can perform the function of a traditional solid second piston ring. Even if the annular base that is fitted with the piston's middle ring groove is restricted by carbon deposits and loses its elastic seal, the sealing ring that is elastically slidably connected to the annular base can still achieve an effective seal with the cylinder wall.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high efficiency carbon deposit cleaning piston ring characterized by, The application relates to a sealing ring (2) for a cylinder-piston unit, which comprises: a ring-shaped base (1) with an outer ring surface provided with mounting grooves (11) arranged in a circle; a sealing ring (2) slidably connected with the mounting grooves (11) along the radial direction of the ring-shaped base (1); a spring piece (3) elastically supported between the inner ring surface of the sealing ring (2) and the bottom surface of the mounting grooves (11).

2. The high deposition piston ring of claim 1, wherein, The outer ring surface of the sealing ring (2) is arranged to be inclined to the axis, and the sealing gap gradually increases from top to bottom.

3. The high deposition piston ring of claim 1, wherein The gap between the opening end of the sealing ring (2) and the side wall surface of the corresponding mounting groove (11) is matched.

4. The high deposition piston ring of claim 1, wherein, The upper and lower surfaces of the sealing ring (2) are sealingly matched with the side wall surface of the corresponding mounting groove (11); and the spring piece is a wavy ring strip.

5. The high deposition piston ring of claim 1, wherein The outer surface of the sealing ring (2) is coated.

6. The high deposition piston ring of claim 5, wherein, The coating on the outer surface of the sealing ring (2) is formed by HiPlMS process.

7. The high deposition piston ring of claim 1, wherein The spring piece (3) is tightly connected with the bottom surface of the mounting groove (11).

8. The high deposition piston ring of claim 7, wherein, The spring piece (3) is laser welded with the bottom surface of the mounting groove (11).

9. The high deposition piston ring of claim 1, wherein, The ring-shaped base (1) is arranged in the middle ring groove (101) of three ring grooves on the cylindrical surface of a cylindrical piston (10).

10. The high deposition piston ring of claim 9, wherein, The ring-shaped base (1) is matched with the middle ring groove (101).

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