Oil ring assembly, oil ring system, and engine system

Abstract

An oil ring assembly for an engine includes a first body and a second body. The first body includes a first body outer surface, a first body inner surface, and a first body biasing member contact surface extending outwardly at an angle from the first body inner surface toward the first body outer surface. The oil ring assembly includes a first guide extending from the first body outer surface, a second body, and a second guide. The second body includes a second body outer surface, a second body inner surface, and a second body biasing member contact surface extending outwardly at an angle from the second body inner surface toward the second body outer surface. The second guide extends from the second body outer surface. The second body is positioned a distance from the first body such that the second body is independently movable relative to the first body.

Description

[0001] Cross-references to related applications This application claims priority and benefit to Indian Provisional Patent No. 202341086777, filed on December 19, 2023, the entire disclosure of which is incorporated herein by reference. Technical Field

[0002] This application generally relates to oil rings for internal combustion engines. Background Technology

[0003] An internal combustion engine consists of pistons that move within cylinders. Oil flows between the outer surface of each piston and the inner surface of each cylinder to facilitate the piston's movement within the cylinder. Excess oil is scraped off from the inner surface of the cylinder by oil rings positioned on the piston. Summary of the Invention

[0004] According to one embodiment, an oil ring assembly includes a first body. The first body includes a first body outer surface, a first body inner surface substantially positioned opposite to the first body outer surface, and a first body biasing member contact surface extending outward from the first body inner surface toward the first body outer surface at a first angle. The oil ring assembly also includes a first guide rail extending from the first body outer surface. The oil ring assembly also includes a second body, the second body including a second body outer surface, a second body inner surface substantially positioned opposite to the second body outer surface, and a second biasing member contact surface extending outward from the second body inner surface toward the second body outer surface at a second angle. The oil ring assembly also includes a second guide rail extending from the second body outer surface. The second body is positioned at a distance from the first body and is movable independently relative to the first body.

[0005] According to another embodiment, an oil ring system includes an oil ring assembly. The oil ring assembly includes a first body and a second body. The first body includes a first guide rail, and the second body is positioned at a distance from the first body and includes a second guide rail. The second body is movable independently relative to the first body. The oil ring system also includes an oil ring biasing member configured to apply a first force to the first body, causing the first body to move a first distance, and to apply a second force to the second body, causing the second body to move a second distance.

[0006] According to another embodiment, an engine system includes a cylinder and a piston assembly positioned within the cylinder. The piston assembly includes a piston defining a recess. The engine system also includes an oil ring assembly positioned in the recess. The oil ring assembly includes a first body and a second body. The second body is positioned at a distance away from the first body. The engine system also includes an oil ring biasing member contacting each of the first and second bodies. The oil ring biasing member is configured to apply a first force on the first body, causing the first body to move a first distance and resulting in a first seal between the first body and the recess, and to apply a second force on the second body, causing the second body to move a second distance and resulting in a second seal between the second body and the recess. Attached Figure Description

[0007] This disclosure will be more fully understood from the following detailed description taken in conjunction with the accompanying drawings, in which, unless otherwise specified, the same reference numerals denote the same elements, wherein: Figure 1 This is a cross-sectional view of a portion of an internal combustion engine according to one embodiment; and Figure 2 It is based on Figure 1 A cross-sectional view of the oil ring assembly of an internal combustion engine according to an embodiment.

[0008] It should be recognized that the accompanying drawings are schematic representations for illustrative purposes. The drawings are provided to illustrate one or more implementations, and it is clearly understood that the drawings are not intended to limit the scope or meaning of the claims. Detailed Implementation

[0009] The following is a more detailed description of various concepts, methods, and apparatus implementations related to oil ring assemblies for internal combustion engines. The various concepts introduced above and discussed in more detail below can be implemented in any of a variety of ways, as the described concepts are not limited to any particular implementation. Specific implementations and application examples are provided primarily for illustrative purposes.

[0010] I. Overview Internal combustion (IC) engines (e.g., hydrogen IC engines, etc.) utilize a lubricant such as oil to facilitate the repetitive movement of the piston within the cylinder. An oil ring is positioned on the piston (e.g., piston head, etc.). The oil ring may include a guide rail that contacts the inner wall of the cylinder. As the piston moves within the cylinder (e.g., vertically, etc.), the oil ring moves with the piston, thereby scraping excess oil from the inner wall of the cylinder.

[0011] This document relates to an oil ring assembly comprising an oil ring and an oil ring biasing member or spring received within the oil ring. The oil ring includes a first body and a second body. The second body is positioned at a distance from the first body such that a gap (e.g., distance, space, etc.) exists between the first and second bodies. The first body includes at least one first guide rail on the outer surface of the first body of the oil ring. The second body includes at least one second guide rail on the outer surface of the second body of the oil ring.

[0012] II. Internal Combustion Engine with Example Oil Ring Assembly Figure 1 A cross-sectional view depicting a portion of an internal combustion engine 100 (e.g., a diesel internal combustion engine, a gasoline internal combustion engine, a hybrid internal combustion engine, a liquefied natural gas internal combustion engine, a propane internal combustion engine, a hydrogen internal combustion engine, other fuel engines, etc.).

[0013] An engine system includes a cylinder 102 and a piston assembly 104 positioned within the cylinder 102. The piston assembly 104 includes a piston 108 defining a recess 128. The engine system 100 also includes an oil ring assembly 122 positioned in the recess 128. The oil ring assembly 122 includes a first body 202 and a second body 204. The second body 204 is positioned at a distance away from the first body 202. The engine system 100 also includes an oil ring biasing member 132 contacting each of the first body 202 and the second body 204. The oil ring biasing member 132 is configured to apply a first force to the first body 202, causing the first body 202 to move a first distance and resulting in a first seal between the first body 202 and the recess 128, and to apply a second force to the second body 204, causing the second body 204 to move a second distance and resulting in a second seal between the second body 204 and the recess 128.

[0014] The internal combustion engine 100 includes a plurality of cylinders 102 and a plurality of piston assemblies 104. For example, each piston assembly 104 is located within one of the cylinders 102. Thus, the internal combustion engine 100 includes the same number of cylinders 102 and piston assemblies 104. In various embodiments, the internal combustion engine 100 includes two, four, five, six, eight, ten, twelve, sixteen, twenty-four, or other numbers of cylinders 102, and therefore includes the same number of piston assemblies 104.

[0015] Each cylinder 102 includes a combustion chamber 106. The combustion chamber 106 is defined by a piston assembly 104. For example, the combustion chamber 106 may be defined as the distance from the piston assembly 104 (e.g., piston, piston head, etc.) to an end (e.g., tip, etc.) of the cylinder 102. Thus, the internal combustion engine 100 includes the same number of combustion chambers 106 as the cylinders 102, wherein each combustion chamber 106 is adjacent to one of the cylinders 102.

[0016] Each of the piston assemblies 104 includes a corresponding piston 108 (e.g., piston head, etc.) and a connecting rod 110. The piston 108 is received within one of the cylinders 102 (e.g., positioned within one of the cylinders 102, etc.). The piston 108 is configured to selectively reposition within the cylinder 102. For example, the piston 108 can selectively move from a first position to a second position within the cylinder 102.

[0017] Connecting rod 110 is connected to piston 108 (e.g., via a toggle pin, etc.). Connecting rod 110 is configured to extend within cylinder 102, thereby moving piston 108. Connecting rod 110 is also connected to crankshaft.

[0018] When the internal combustion engine 100 is running, air and fuel are supplied to the combustion chamber 106 (e.g., via injectors, via valves, etc.), such that the air and fuel are positioned adjacent to the combustion surface 112 (e.g., face, etc.) of the piston 108. Combustion of the air and fuel (e.g., due to compression provided by the piston 108, due to sparks, etc.) produces exhaust gas. This production of exhaust gas results in pressure on the combustion surface 112, which causes the piston 108 to translate within the cylinder 102 and away from the combustion chamber 106. The translation of the piston 108 causes translation of the connecting rod 110. The translation of the connecting rod 110 causes rotation of the crankshaft. The rotation of the crankshaft is converted into rotational energy generated by the engine and utilized by other systems (e.g., drive shafts, pulleys, etc.).

[0019] Piston 108 includes an outer piston surface 114. The outer piston surface 114 is spaced apart from and faces a mating surface (e.g., inner surface, inner wall, etc.) 116 of cylinder 102. When piston 108 translates within cylinder 102, outer piston surface 114 also translates. Internal combustion engine 100 includes a lubrication system (e.g., oil circulation system, etc.) that supplies lubricant (e.g., oil, etc.) to cylinder 102 between outer piston surface 114 and mating surface 116. This lubricant can reduce friction between outer piston surface 114 and mating surface 116.

[0020] The piston assembly 104 also includes a first compression ring 118 (e.g., an O-ring, a seal, etc.), a second compression ring 120 (e.g., an O-ring, a seal, etc.) and an oil ring assembly 122.

[0021] The oil ring assembly 122 includes a first body 202, which includes a first body outer surface 206, a first body inner surface 216 substantially positioned opposite to the first body outer surface 206, and a first body biasing member contact surface 218 extending outward from the first body inner surface 216 toward the first body outer surface 206 at a first angle A1. The oil ring assembly 122 includes a first guide rail 208 extending from the first body outer surface 206. The oil ring assembly 122 includes a second body 204, which includes a second body outer surface 228, a second body inner surface 238 substantially positioned opposite to the second body outer surface 228, and a second body biasing member contact surface 240 extending outward from the second body inner surface 238 toward the second body outer surface 228 at a second angle A2. The oil ring assembly 122 includes a second guide rail 230 extending from the second body outer surface 228. The second body 204 is positioned at a certain distance from the first body 202, and the second body 204 can move independently relative to the first body 202.

[0022] As explained in more detail herein, the first compression ring 118, the second compression ring 120, and the oil ring assembly 122 cooperate to ensure that oil circulates along the outer piston surface 114. In some embodiments, the piston assembly 104 may include any number of compression rings 118, 120.

[0023] The outer piston surface 114 includes a first compression ring groove 124 (e.g., a cavity, recess, etc.). The first compression ring groove 124 is configured to receive a first compression ring 118. The first compression ring 118 is positioned within the first compression ring groove 124 and is held within the first compression ring groove 124 during translation of the piston assembly 104 within the cylinder 102.

[0024] The outer piston surface 114 also includes a second compression ring groove 126 (e.g., a cavity). The second compression ring groove 126 is positioned within the second compression ring 120 and is held within the second compression ring groove 126 during the translation of the piston assembly 104 within the cylinder 102.

[0025] The outer piston surface 114 also includes an oil ring assembly recess 128 (e.g., a cavity, a recess, etc.). The oil ring assembly recess 128 is configured to receive an oil ring assembly 122. The oil ring assembly 122 is positioned within the oil ring assembly recess 128 and is configured such that the oil ring assembly 122 remains within the oil ring assembly recess 128 during translation of the piston assembly 104 within the cylinder 102.

[0026] The oil ring system includes an oil ring assembly 122. The oil ring assembly 122 includes a first body 202 and a second body 204. The first body 202 includes a first guide rail 208, and the second body 204 is positioned at a distance from the first body 202 and includes a second guide rail 230. The second body 204 is movable independently relative to the first body 202. The oil ring system also includes an oil ring biasing member 132, configured to apply a first force to the first body 202, causing the first body 202 to move a first distance, and to apply a second force to the second body 204, causing the second body 204 to move a second distance.

[0027] The oil ring assembly 122 includes an oil ring 130 and an oil ring biasing member 132 (e.g., a spring such as a coil spring). The oil ring 130 and the oil ring biasing member 132 are each received from an oil ring assembly recess 128. For example, the oil ring 130 may define a recess or channel for positioning (e.g., encapsulating, surrounding, etc.) the oil ring biasing member 132 within the oil ring assembly recess 128. The oil ring biasing member 132 is configured to apply a force to the oil ring 130, thereby moving the oil ring 130 a certain distance from the oil ring assembly recess 128 toward the mating surface 116. For example, the oil ring biasing member 132 partially separates the oil ring 130 from the outer piston surface 114. The oil ring biasing member 132 operates to mitigate deformation of the oil ring 130 upon entering the oil ring assembly recess 128.

[0028] III. Oil Ring Assembly Now for reference Figure 2 This is a diagram illustrating an oil ring assembly 122 according to one embodiment. Figure 2 As shown, the oil ring 130 includes a first body 202 and a second body 204.

[0029] The oil ring assembly 122 includes a first body 202. The first body 202 includes a first body outer surface 206, a first body inner surface 216 substantially positioned opposite to the first body outer surface 206, and a first body biasing member contact surface 218 extending outward from the first body inner surface 216 toward the first body outer surface 206 at a first angle A1. The oil ring assembly 122 also includes a first guide rail 208 extending from the first body outer surface 206.

[0030] The oil ring assembly 122 also includes a second body 204, which includes a second body outer surface 228, a second body inner surface 238 substantially positioned opposite to the second body outer surface 228, and a second body biasing member contact surface 240 extending outward from the second body inner surface 238 toward the second body outer surface 228 at a second angle A2. The oil ring assembly 122 also includes a second guide rail 230 extending from the second body outer surface 228. The second body 204 is positioned at a distance from the first body 202 and is movable independently relative to the first body 202.

[0031] Each of the first body 202 and the second body 204 is positioned within the oil ring assembly recess 128. The first body 202 is positioned at a distance away from the second body 204 (e.g., a separation distance, such as a gap of at least 0.5 mm to allow oil flow and discharge, etc.). The first body 202 and the second body 204 are configured to move independently (e.g., laterally, horizontally, vertically, etc.) inward (e.g., toward the piston 108, etc.) and outward (e.g., toward the mating surface 116, etc.) within the oil ring assembly recess 128.

[0032] The first body 202 includes a first body outer surface 206. The first body outer surface 206 is positioned adjacent to the mating surface 116 of the cylinder 102. The first body outer surface 206 includes a first guide rail 208 extending outward from the first body outer surface 206 toward the mating surface 116. The first guide rail 208 may be substantially trapezoidal in shape. For example, the first guide rail 208 may include a first guide rail side 210 and a second guide rail side 212. The first guide rail side 210 and the second guide rail side 212 may extend from the first body outer surface 206 at an angle. Each of the first guide rail side 210 and the second guide rail side 212 extends to a first guide rail contact surface 214. For example, the first guide rail contact surface 214 may be a flat surface configured to contact the mating surface 116. The first guide rail contact surface 214 is configured to scrape oil from the mating surface 116 when the piston assembly 104 moves within the cylinder 102.

[0033] The first body 202 also includes a first body inner surface 216. The first body inner surface 216 is positioned opposite the first body outer surface 206. For example, the first body inner surface 216 may extend along a plane parallel to the first body outer surface 206.

[0034] The first body 202 also includes a first body biasing member contact surface 218 and a first body separation surface 220. The first body biasing member contact surface 218 extends from the inner surface 216 of the first body toward the mating surface 116 at a first angle A1 (e.g., an oblique angle, etc.). For example, the first angle A1 may be in the range of 95 degrees to 175 degrees relative to the inner surface 216 of the first body. The first body biasing member contact surface 218 contacts an oil ring biasing member 132. The first body biasing member contact surface 218 is configured to receive a force (e.g., a first force, etc.) applied to the first body 202 by the oil ring biasing member 132. The force applied to the first body biasing member contact surface 218 causes the first body 202 to move toward the mating surface 116 (e.g., laterally, horizontally, etc.). For example, the first body 202 may move toward the mating surface 116 a first distance.

[0035] The first body separation surface 220 extends from the outer surface 206 of the first body to the end of the first body biasing member contact surface 218 opposite to the end extending from the inner surface 216 of the first body. For example, the first body separation surface 220 may be perpendicular to the outer surface 206 of the first body.

[0036] The first body 202 also includes a first body groove mating surface 222. The first body groove mating surface 222 is positioned adjacent to each of the first body outer surface 206 and the first body inner surface 216 (e.g., between the first body outer surface and the first body inner surface, etc.) and opposite to the first body separation surface 220 (e.g., the first body groove mating surface 222 extends in a plane parallel to the first body separation surface 220). The first body groove mating surface 222 contacts the first inner groove surface 224 of the oil ring assembly groove 128.

[0037] A seal (represented as 226) is formed between the first main body groove mating surface 222 and the first inner groove surface 224. The formed seal prevents (e.g., prevents, blocks, etc.) the flow (e.g., fuel, air, exhaust, etc.) into the oil ring assembly groove 128 between the first main body groove mating surface 222 and the first inner groove surface 224 (e.g., prevents forward and backward flow into and out of the groove, prevents leakage, etc.).

[0038] The second body 204 includes a second body outer surface 228. The second body outer surface 228 is positioned adjacent to the mating surface 116 of the cylinder 102. The second body outer surface 228 includes a second guide rail 230 extending outward from the second body outer surface 228 toward the mating surface 116. Similar to the first guide rail 208, the second guide rail 230 may be substantially trapezoidal in shape. For example, the second guide rail 230 may include a first guide rail side 232 and a second guide rail side 234.

[0039] The first guide rail side 232 and the second guide rail side 234 can extend from the second body outer surface 228 toward the mating surface 116 at a certain angle (e.g., a non-zero angle, an oblique angle, etc.) relative to each of the first body outer surface 206 and the second body outer surface 228.

[0040] Each of the first guide rail side 232 and the second guide rail side 234 extends to the second guide rail contact surface 236. For example, the second guide rail contact surface 236 may be a flat surface configured to contact the mating surface 116. The second guide rail contact surface 236 is configured to scrape oil from the mating surface 116 when the piston assembly 104 moves within the cylinder 102. For example, each of the first guide rail contact surface 214 and the second guide rail contact surface 236 contacts the mating surface 116 such that the first guide rail contact surface 214 and the second guide rail contact surface 236 simultaneously scrape oil from the mating surface 116.

[0041] The second body 204 also includes a second body inner surface 238. The second body inner surface 238 is positioned opposite the second body outer surface 228. For example, the second body inner surface 238 may extend along a plane parallel to each of the second body outer surface 228 and the first body outer surface 206.

[0042] The second body 204 also includes a second body biasing member contact surface 240 and a second body separation surface 242. The second body biasing member contact surface 240 extends from the inner surface 238 of the second body toward the mating surface 116 at a second angle A2 (e.g., a non-zero angle, an oblique angle, etc.). For example, the second angle A2 may be in the range of 95 degrees to 175 degrees relative to the inner surface 238 of the second body.

[0043] The second body biasing member contact surface 240 contacts the oil ring biasing member 132. The second body biasing member contact surface 240 is configured to receive a force (e.g., a first force) applied to the second body 204 by the oil ring biasing member 132. The force applied to the second body biasing member contact surface 240 causes the second body 204 to move toward the mating surface 116 (e.g., laterally, horizontally, vertically, etc.). For example, the second body 204 may move toward the mating surface 116 a second distance.

[0044] The first main body bias member contact surface 218 and the second main body bias member contact surface 240 cooperate together to form a channel configured to receive the oil ring bias member 132.

[0045] The second body separation surface 242 extends from the outer surface 228 of the second body to the end of the second body biasing member contact surface 240 opposite to the end extending from the inner surface 238 of the second body. For example, the second body separation surface 242 may be perpendicular to the outer surface 228 of the second body.

[0046] The second body 204 also includes a second body groove mating surface 244. The second body groove mating surface 244 is positioned adjacent to each of the second body outer surface 228 and the second body inner surface 238 (e.g., between the second body outer surface 228 and the second body inner surface 238, etc.) and opposite to the second body separating surface 242 (e.g., the second body groove mating surface 244 extends in a plane parallel to each of the second body separating surface 242 and the first body groove mating surface 222, etc.). The second body groove mating surface 244 contacts the second inner groove surface 246 of the oil ring assembly groove 128.

[0047] A seal (represented as 248) is formed between the second main groove mating surface 244 and the second inner groove surface 246. The formed seal prevents (e.g., prevents, blocks, etc.) the flow (e.g., fuel, air, exhaust, etc.) into the oil ring assembly groove 128 between the second main groove mating surface 244 and the second inner groove surface 246 (e.g., prevents forward and backward flow into and out of the groove, prevents leakage, etc.).

[0048] The oil ring biasing member 132 is configured to simultaneously apply force to each of the first body 202 and the second body 204. For example, the oil ring biasing member 132 contacts each of the first body biasing member contact surface 218 and the second body biasing member contact surface 240, and is configured to provide force to each of the first body 202 and the second body 204. According to this embodiment, the forces applied by the oil ring biasing member 132 are substantially equal and not fixedly applied to each of the first body 202 and the second body 204.

[0049] For example, according to one embodiment, the oil ring assembly system includes a first body 202. The first body 202 includes a first body outer surface 206, a first body inner surface 216 positioned opposite to the first body outer surface 206, and a first body biasing member contact surface 218 extending outward from the first body inner surface 216 toward the first body outer surface 206 at a first angle A1. A first guide rail 208 extends from the first body outer surface 206. A second body 204 is positioned a gap distance from the first body 202. The second body 204 includes a second body outer surface 228, a second body inner surface 238 positioned opposite to the second body outer surface 228, and a second body biasing member contact surface 240 extending outward from the second body inner surface 238 toward the second body outer surface 228 at a second angle A2. A second guide rail 230 extends from the second body outer surface 228. An oil ring biasing member 132 contacts each of the first body biasing member contact surface 218 and the second body biasing member contact surface 240. The oil ring biasing member 132 is configured to apply a first force to the first body 202, causing the first body 202 to move a first distance, and to apply a second force to the second body 204, causing the second body 204 to move a second distance.

[0050] The oil ring biasing member 132 can apply a force to each of the first body 202 and the second body 204, causing the first body 202 to move a first distance and the second body 204 to move a second distance different from the first distance, such that each of the first guide rail 208 and the second guide rail 230 contacts the mating surface 116. For example, each of the first guide rail 208 and the second guide rail 230 can be manufactured (e.g., profile grinding, machining, grinding, molding, etc.) to a desired width W (e.g., 0.11 mm), such that each of the first guide rail 208 and the second guide rail 230 has substantially equal (e.g., substantially the same, similar, etc.) widths. In some embodiments, the first guide rail 208 may have a first width W1, and the second guide rail 230 may have a second width W2. The first width W1 is the distance measured from a first end of the first guide rail contact surface 214 to a second end of the first guide rail contact surface 214 (e.g., the length of the first guide rail contact surface, etc.). Similarly, the second width W2 is the distance (e.g., the length of the second guide contact surface 236) measured from the first end of the second guide contact surface 236 to the second end of the second guide contact surface 236.

[0051] Each of the first guide rail 208 and the second guide rail 230 can also be manufactured to a desired depth D (e.g., 0.3 to 3 mm, etc.). For example, the depth D of the first guide rail 208 and the second guide rail 230 can be substantially equal (e.g., identical, similar, etc.). In some embodiments, the first guide rail 208 can be a first depth D1, and the second guide rail 230 can be a second depth D2 (e.g., differences arise during the manufacturing process, the grinding process includes individual grooves of different sizes, etc.). The first depth D1 of the first guide rail 208 is the distance measured from the first guide rail contact surface 214 to the first body outer surface 206. Similarly, the second depth D2 is the distance measured from the second guide rail contact surface 236 to the second body outer surface 228.

[0052] According to one embodiment, the first guide rail 208 may be a first width W1, and the second guide rail 230 may be a second width W2 that is substantially equal to (e.g., the same, similar, etc.) the first width W1. Furthermore, the first guide rail 208 may be a first depth D1, and the second guide rail 230 may be a second depth D2 different from the first depth D1. For example, the second depth D2 may be less than the first depth D1. The oil ring biasing member 132 may apply a force to each of the first body 202 and the second body 204, causing the first body 202 to move a first distance and the second body 204 to move a second distance greater than the first distance. For example, the second body 204 may move a second distance greater than the first distance because the second guide rail 230 may have a depth D2 less than the depth D1 of the first guide rail 208. Therefore, the second body 204 may move a second distance independently of the first body 202, such that the second guide rail 230 continuously (e.g., consistently) contacts the mating surface 116 to provide effective scraping.

[0053] In other embodiments, the first guide rail 208 may be a first width W1 and a first depth D1, and the second guide rail 230 may be a second width W2 and a second depth D2 greater than the first depth D2. Similarly, as described above, in this embodiment, the oil ring biasing member 132 may apply a force to each of the first body 202 and the second body 204, such that the first body 202 moves a first distance and the second body moves a second distance, and the first distance is greater than the second distance. For example, the first body 202 and the second body 204 are configured to move independently inward and outward within the oil ring assembly groove 128 to advantageously address any uneven matching of the components (e.g., the tripping width or depth of the first guide rail 208 and the second guide rail 230, etc.).

[0054] IV. Construction of Example Implementations Although this specification contains many specific implementation details, these details should not be construed as limiting the scope of the claims, but rather as descriptions of features specific to the implementations. Some features described in the context of a single implementation may also be implemented in a combined manner in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented individually or in any suitable sub-combination in multiple implementations. Furthermore, although features may be described as functioning in certain combinations and even initially claimed in this way, in some cases, one or more features from the claimed combination may be removed from the combination, and the claimed combination may involve sub-combinations or variations thereof.

[0055] As used herein, the term "substantially" and similar terms are intended to have a broad meaning consistent with common and accepted usage by one of ordinary skill in the art to which the subject matter of this disclosure pertains. Those skilled in the art who read this disclosure will understand that these terms are intended to allow for the description of certain features described and claimed, without limiting the scope of those features to the precise numerical ranges provided. Therefore, these terms should be interpreted as indicating that non-substantial or irrelevant modifications or alterations to the described and claimed subject matter are considered to fall within the scope of this disclosure.

[0056] As used herein, the term "joint" or similar means that two components are joined together directly or indirectly. Such a joint can be fixed (e.g., permanent) or movable (e.g., removable or releasable). Such a joint can be achieved by integrally forming two components, or two components and any additional intermediate components, into a single unit, or by attaching two components, or two components and any additional intermediate components, to each other.

[0057] It is important to note that the construction and arrangement of the system shown in the various example implementations are illustrative only and not restrictive in nature. All changes and modifications within the spirit and / or scope of the described implementations are intended to be protected. It should be understood that some features may not be necessary, and implementations lacking various features may be contemplated as being within the scope of this application, defined by the appended claims. When the term "part" is used, unless specifically stated otherwise, an item may include a part and / or the entire item.

[0058] Furthermore, the term "or" is used in its inclusive meaning (rather than its exclusive meaning), so when used, for example, to connect a list of elements, the term "or" indicates one, some, or all of the elements in the list. Unless otherwise specifically stated, conjunction language such as the phrase "at least one of X, Y, and Z" should be understood in the context as generally used to express items, and terms such as can be X, Y, Z, X and Y, X and Z, Y and Z, or X, Y, and Z (i.e., any combination of X, Y, and Z). Therefore, unless otherwise indicated, such conjunction language is generally not intended to imply that certain embodiments require at least one of X, at least one of Y, and at least one of Z to be present individually.

[0059] Additionally, unless otherwise stated, the range of values ​​used herein (e.g., W to P, etc.) includes both their maximum and minimum values ​​(e.g., W to P includes W and includes P, etc.). Furthermore, unless otherwise stated, the range of values ​​(e.g., W to P, etc.) does not necessarily need to include intermediate values ​​within the range of values ​​(e.g., W to P may include only W and P, etc.).

Claims

1. An oil ring assembly, comprising: A first body, the first body including a first body outer surface, a first body inner surface substantially positioned opposite to the first body outer surface, and a first body biasing member contact surface extending outward from the first body inner surface toward the first body outer surface at a first angle; A first guide rail extends from the outer surface of the first body; The second body includes a second body outer surface, a second body inner surface substantially positioned opposite to the second body outer surface, and a second body biasing member contact surface extending outward from the second body inner surface toward the second body outer surface at a second angle; as well as The second guide rail extends from the outer surface of the second body; The second entity is positioned at a certain distance from the first entity, and the second entity is capable of moving independently relative to the first entity.

2. The oil ring assembly according to claim 1, wherein the first seal is formed between the mating surface of the first body groove and the surface of the first inner groove, and the mating surface of the first body groove is adjacent to each of the inner surface of the first body and the outer surface of the first body.

3. The oil ring assembly according to claim 2, wherein the second seal is formed between the surface of the second inner groove and the mating surface of the second body groove, the mating surface of the second body groove being adjacent to each of the inner surface of the second body and the outer surface of the second body.

4. The oil ring assembly of claim 1, wherein the first guide rail includes a first depth measured from the inner surface of the first body to the first guide rail contact surface, and the second guide rail includes a second depth measured from the inner surface of the second body to the second guide rail contact surface, and wherein the first depth is substantially equal to the second depth.

5. The oil ring assembly according to claim 1, wherein the first angle is substantially equal to the second angle.

6. The oil ring assembly of claim 1, wherein the first body biasing member contact surface and the second body biasing member contact surface cooperate to define a channel configured to receive an oil ring biasing member.

7. The oil ring assembly according to claim 1, further comprising an oil ring biasing member, the oil ring biasing member contacting each of the contact surface of the first body biasing member and the contact surface of the second biasing member, the oil ring biasing member applying a first force on the first body to move the first body a first distance, and applying a second force on the second body to move the second body a second distance.

8. The oil ring assembly of claim 1, wherein the first guide rail includes a first depth measured from the inner surface of the first body to the first guide rail contact surface, and the second guide rail includes a second depth measured from the inner surface of the second body to the second guide rail contact surface, and wherein the first depth is less than the second depth.

9. The oil ring assembly of claim 8 further includes an oil ring biasing member, the oil ring biasing member contacting each of the contact surface of the first body biasing member and the contact surface of the second biasing member, the oil ring biasing member applying a first force on the first body to move the first body a first distance, and applying a second force on the second body to move the second body a second distance, the first distance being greater than the second distance.

10. The oil ring assembly according to claim 1, wherein the first guide rail comprises: A first contact surface, configured to contact the mating surface of the cylinder, the contact surface defining a first length; A first guide rail, the first guide rail extending from the outer surface to the first contact surface; as well as The second side of the first guide rail extends from the outer surface to the first contact surface.

11. The oil ring assembly of claim 10, wherein the first guide rail and the second guide rail are substantially trapezoidal.

12. The oil ring assembly of claim 10, wherein the second guide rail comprises: A second contact surface, configured to contact the mating surface of the cylinder, the contact surface defining a second length; The first side of the second guide rail extends from the outer surface to the second contact surface; as well as The second side of the second guide rail extends from the outer surface to the second contact surface.

13. The oil ring assembly of claim 12, wherein the first length is substantially equal to the second length.

14. An oil ring system, comprising: - Oil ring assembly, the oil ring assembly comprising: -- A first body, the first body including a first guide rail; and -- A second body, positioned at a certain distance from the first body and including a second guide rail, the second body being capable of moving independently relative to the first body; and - An oil ring biasing member configured to apply a first force to the first body, causing the first body to move a first distance, and to apply a second force to the second body, causing the second body to move a second distance.

15. The oil ring system of claim 14, wherein at least a portion of the oil ring biasing member is positioned between the first body and the second body.

16. The oil ring system according to claim 14, wherein: The first guide rail includes a first width, and the second guide rail includes a second width greater than the first distance. The second distance is less than the first distance.

17. An engine system comprising: - Cylinder; - A piston assembly, the piston assembly being positioned within the cylinder, the piston assembly including a piston defining a recess; - An oil ring assembly, positioned in the groove, the oil ring assembly comprising: -- The first subject, and -- A second entity, which is positioned at a certain distance away from the first entity; as well as - An oil ring biasing member, the oil ring biasing member contacting each of the first body and the second body, the oil ring biasing member being configured to: A first force is applied to the first body, causing the first body to move a first distance and resulting in a first seal being formed between the first body and the groove. A second force is applied to the second body, causing the second body to move a second distance and resulting in a second seal being formed between the second body and the groove.

18. The engine system according to claim 17, wherein: The first body includes a first body outer surface, a first body inner surface substantially positioned opposite to the first body outer surface, and a first body biasing member contact surface extending outward from the first body inner surface toward the first body outer surface at a first angle. The second body includes a second body outer surface, a second body inner surface substantially positioned opposite to the second body outer surface, and a second body biasing member contact surface extending outward from the second body inner surface toward the second body outer surface at a second angle.

19. The engine system of claim 18, wherein the oil ring assembly further comprises: A first guide rail, the first guide rail including a first depth, the first depth being measured from the inner surface of the first body to the contact surface of the first guide rail; as well as The second guide rail includes a second depth, which is measured from the inner surface of the second body to the contact surface of the second guide rail. The first depth is less than the second depth, and the first distance is greater than the second distance.

20. The engine system of claim 17, wherein the piston defines a plurality of recesses and a plurality of oil ring assemblies positioned in each of the plurality of recesses.

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