Gas ring structure of engine

Abstract

The invention discloses an engine gas ring structure. The gas ring structure of the engine comprises a gas ring body, a piston and a gas ring, wherein the gas ring body is sleeved in a ring groove of the piston; the high-temperature-resistant alloy plating layer is sprayed and plated on the upper surface of the gas ring body; and the wear-resistant alloy plating layer is sprayed and plated on the outer circular surface of the gas ring body. According to the engine gas ring structure, the high-temperature-resistant alloy coatings are sprayed on the gas ring upper inclined surface and the gas ring upper plane, so that the gas ring can effectively seal high-temperature gas in a combustion chamber during working; and the wear-resistant alloy coating is sprayed on the outer circular surface of the gas ring, so that the wear resistance of the outer circular surface of the piston ring is effectively improved, the friction work is reduced, and the reliability of the piston ring is improved.

Description

Technical Field

[0001] The invention relates to the field of automobile engines, in particular to an engine air ring structure. Background Art

[0002] With the advancement of engine technology and the demand for increased engine power, the requirements for reducing engine friction work are becoming increasingly higher.

[0003] The piston ring plays a vital role in the engine. It relies on the pressure difference of gas or liquid to form a seal between the outer surface of the ring and the cylinder and between the ring and the ring groove, thereby controlling the combustion chamber and the flow of lubricating oil. The sealing performance of the piston ring directly affects the efficiency and performance of the engine. The piston ring includes an air ring and an oil ring. The air ring is used to seal the combustible mixed gas in the combustion chamber, and the oil ring is used to scrape off the excess oil on the cylinder.

[0004] However, in existing piston ring designs, based on emission and cost considerations, the outer side structure of the piston ring gas ring adopts a non-coated or partially coated structure, resulting in poor high temperature impact resistance of the piston ring gas ring, relatively large friction, and poor wear resistance.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide an engine gas ring structure with a simple and reasonable structure, which can effectively seal the high-temperature gas in the combustion chamber and effectively improve the wear resistance of the outer cylindrical surface of the piston ring, thereby reducing friction work and improving the reliability of the piston ring.

[0007] To achieve the above-mentioned purpose, the present invention provides an engine air ring structure, comprising: an air ring body, which is sleeved in the ring groove of the piston; a high-temperature resistant alloy coating, which is sprayed on the upper surface of the air ring body; and a wear-resistant alloy coating, which is sprayed on the outer cylindrical surface of the air ring body.

[0008] In a preferred embodiment, the cross section of the gas ring body is a trapezoidal structure.

[0009] In a preferred embodiment, the upper surface of the air ring body includes: an upper inclined surface of the air ring body and an upper plane of the air ring body, and a high-temperature resistant alloy coating is sprayed on the upper inclined surface of the air ring body and the upper plane of the air ring body to form an outer inclined surface of the high-temperature alloy coating and an outer plane of the high-temperature alloy coating, respectively.

[0010] In a preferred embodiment, the outer circumferential surface of the gas ring body is an elliptical surface.

[0011] In a preferred embodiment, the material of the high temperature resistant alloy coating is a chrome alloy stone coating.

[0012] In a preferred embodiment, the wear-resistant alloy coating is made of nickel-chromium alloy coating.

[0013] Compared with the prior art, the engine gas ring structure according to the present invention has the following beneficial effects: the engine gas ring structure can effectively seal the high-temperature gas in the combustion chamber during operation by spraying a high-temperature resistant alloy coating on the upper inclined surface and the upper flat surface of the gas ring, effectively withstand the frequent impact of the high-temperature gas, and ensure sealing and reliability; and spraying a wear-resistant alloy coating on the outer cylindrical surface of the gas ring effectively improves the wear resistance of the outer cylindrical surface of the piston ring, so that the friction work of the piston ring is smaller during operation, thereby reducing the friction work, and can effectively control the amount of piston blowby after the engine has been working for a long time, and improve the reliability of the piston ring. In addition, the cross-section of the gas ring adopts a trapezoidal design, so that its upper and lower surfaces cooperate with the piston ring groove through the conical surface, which can provide more outward tension and ensure the sealing of the piston ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of an engine air ring structure according to an embodiment of the present invention.

[0016] Figure 2 Schematic diagram of the cross-sectional structure of an engine air ring structure according to an embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram of the assembly cross-sectional structure of an engine air ring structure according to one embodiment of the present invention.

[0018] Figure 4 It is a schematic diagram of a partially enlarged assembly cross-section of an engine air ring structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0020] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0026] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] like Figures 1 to 4 As shown, the specific structure of the engine gas ring structure according to the preferred embodiment of the present invention includes: a gas ring body 1, and a high-temperature alloy coating 2 and a wear-resistant alloy coating 3 arranged on the surface of the gas ring body 1. The gas ring body 1 of the engine gas ring structure adopts a trapezoidal design in cross section, so that its upper and lower surfaces cooperate with the piston ring groove through a conical surface, which can provide more outward tension and ensure the sealing of the piston ring. By spraying a high-temperature resistant alloy coating on the periphery of the gas ring body 1, the gas ring can effectively seal the high-temperature gas in the combustion chamber during operation, effectively withstand the frequent impact of the high-temperature gas, and ensure sealing and reliability; and by spraying a wear-resistant alloy coating on the periphery of the gas ring body 1, the wear resistance of the outer cylindrical surface of the piston ring is effectively improved, so that the friction work of the piston ring is smaller during operation, thereby reducing the friction work, and can effectively control the amount of piston blowby after the engine has been working for a long time, and improve the reliability of the piston ring.

[0028] Specifically, if Figure 1 and Figure 2 As shown, the cross section of the gas ring body 1 is a trapezoidal structure, which is sleeved in the ring groove of the piston 4. Relying on the pressure difference of gas or liquid, a seal is formed between the outer surface of the gas ring body 1 and the cylinder 5, and between the gas ring body 1 and the ring groove, which is used to seal the combustible mixed gas in the combustion chamber, thereby controlling the flow of the combustion chamber and lubricating oil. The cross section of the gas ring body 1 is a trapezoidal structure, so that its upper and lower surfaces cooperate with the piston ring groove through the conical surface, which can provide more outward tension and further ensure the sealing of the piston ring.

[0029] The upper surface of the gas ring body 1 is spray-plated with a high-temperature resistant alloy coating 2. When the engine is working, the piston moves up and down, and the upper surface of the gas ring body 1 frequently contacts and seals with the upper and lower inclined surfaces of the piston. Since the high-temperature resistant alloy coating 2 first contacts the high-temperature gas and acts as a seal, the high-temperature resistance and sealing properties are further improved after adding the high-temperature resistant sealing spray-plated layer.

[0030] In one embodiment, if Figures 2 to 4As shown, the upper surface of the gas ring body 1 includes: an upper inclined surface 11 of the gas ring body and an upper plane 12 of the gas ring body, and a high-temperature resistant alloy coating 2 is sprayed on the upper inclined surface 11 of the gas ring body and the upper plane 12 of the gas ring body to form a high-temperature alloy coating outer inclined surface 21 and a high-temperature alloy coating outer plane 22 respectively (wherein, the high-temperature resistant alloy coating 2 is sprayed on the upper inclined surface 11 of the gas ring body to form the high-temperature alloy coating outer inclined surface 21, and the high-temperature resistant alloy coating 2 is sprayed on the upper plane 12 of the gas ring body to form the high-temperature alloy coating outer plane 22).

[0031] When the engine is working, the piston moves up and down, and the upper and lower inclined surfaces of the gas ring will frequently contact and seal with the upper and lower inclined surfaces of the piston. Since the outer inclined surface 21 of the high-temperature alloy coating and the outer plane 22 of the high-temperature alloy coating of the gas ring body 1 are the first to contact the high-temperature gas and play a sealing role, after adding the high-temperature resistant sealing spray-plated layer, the high-temperature resistance and sealing performance are further improved.

[0032] like Figures 2 to 4 As shown, the outer circumferential surface 13 of the gas ring body 1 is spray-coated with a wear-resistant alloy coating 3 to form an outer surface 31 of the wear-resistant alloy coating.

[0033] When the engine is working, the piston moves up and down, and the upper and lower inclined surfaces of the air ring will frequently contact the upper and lower inclined surfaces of the piston, which will output a certain outward tension, and the air ring body 1 itself has a suitable tension. The wear-resistant alloy-plated outer surface 31 of the air ring rubs up and down with the engine cylinder liner wall, which can effectively improve the wear resistance of the outer cylindrical surface of the piston ring, make the friction work of the piston ring smaller when it is working, thereby reducing the friction work, and can effectively control the piston blowby amount after the engine has been working for a long time, thereby improving the reliability of the piston ring.

[0034] In one embodiment, the outer cylindrical surface 13 of the piston ring body 1 is an elliptical surface. When the engine is working, the piston ring will swing with the up and down movement, which will cause the outer surface 31 of the wear-resistant alloy coating to contact the cylinder liner wall at different sections, further improving the wear resistance of the outer cylindrical surface of the piston ring, making the friction work of the piston ring smaller when working, thereby reducing the friction work.

[0035] In one embodiment, the material of the high temperature resistant alloy coating 2 is a chrome alloy stone coating.

[0036] In one embodiment, the material of the wear-resistant alloy coating 3 is a nickel-chromium alloy coating.

[0037] In summary, the engine gas ring structure sprays high-temperature resistant alloy coatings on the upper bevel and flat surfaces of the gas ring, so that the gas ring can effectively seal the high-temperature gas in the combustion chamber during operation, effectively withstand the frequent impact of high-temperature gas, and ensure sealing and reliability; and sprays wear-resistant alloy coatings on the outer cylindrical surface of the gas ring, effectively improving the wear resistance of the outer cylindrical surface of the piston ring, making the friction work of the piston ring smaller during operation, thereby reducing friction work, and effectively controlling the amount of piston blowby after the engine has been working for a long time, improving the reliability of the piston ring. In addition, the cross-section of the gas ring adopts a trapezoidal design, so that its upper and lower surfaces cooperate with the piston ring groove through the conical surface, which can provide more outward tension and ensure the sealing of the piston ring.

[0038] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An engine air ring structure, characterized in that: include: A gas ring body, which is sleeved in the ring groove of the piston; A high temperature resistant alloy coating is sprayed on the upper surface of the gas ring body; as well as The wear-resistant alloy coating is sprayed on the outer circumferential surface of the gas ring body.

2. The engine air ring structure according to claim 1, characterized in that: The cross section of the gas ring body is a trapezoidal structure.

3. The engine air ring structure according to claim 2, characterized in that: The upper surface of the gas ring body includes: an upper inclined surface of the gas ring body and an upper plane of the gas ring body, and a high-temperature resistant alloy coating is sprayed on the upper inclined surface of the gas ring body and the upper plane of the gas ring body to form a high-temperature alloy coating outer inclined surface and a high-temperature alloy coating outer plane respectively.

4. The engine air ring structure according to claim 1, characterized in that: The outer circumferential surface of the gas ring body is an elliptical surface.

5. The engine air ring structure according to claim 1, characterized in that: The material of the high temperature resistant alloy coating is chrome alloy stone coating.

6. The engine air ring structure according to claim 5, characterized in that: The material of the wear-resistant alloy plating layer is a nickel-chromium alloy plating layer.

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