Cylinder body structure with roof type oil return cavity

Abstract

The invention discloses an air cylinder body structure with a roof type oil return cavity, which comprises a plurality of air cylinders arranged side by side and positioned in an air cylinder body; the oil return port is positioned at the top of the cylinder body; the oil return cavities are located in the air cylinder body, each oil return cavity comprises a first oil return channel and a second oil return channel, one oil return cavity is arranged around one air cylinder, the first oil return channel is located on one side edge of the air cylinder, the second oil return channel is located on the other side edge of the air cylinder, and the second oil return channel is located on the other side edge of the air cylinder. The second oil return channel is located on the other side edge of the air cylinder, and the top of the first oil return channel is connected with the top of the second oil return channel to form a roof type structure. On the premise of improving the ventilation performance of the engine and enhancing the heat dissipation capability of the engine, the strength of the cylinder body is enhanced, the occurrence of engine faults is reduced, and the safety of the engine is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of engines, in particular to a cylinder body structure with a roof-type oil return chamber. Background Art

[0002] As social and economic activities increase the requirements for vehicle power, economy, adaptability, etc., the lightweight, safety, applicability, and reliability of vehicles and their components have become a widely-regarded improvement direction. The current working conditions of the engine cylinder block are very harsh, and the structural strength of the cylinder block is very high. If a component cracks, the engine is very dangerous and a fire failure may occur. Therefore, it is very important to ensure the safety and reliability of the engine cylinder block.

[0003] At the same time, when the engine is working, the lubrication system will produce oil mist in the crankcase and valve chamber. At the same time, due to the slight leakage of cylinder air pressure, oil and gas with a certain pressure will be formed in the engine cavity. These oil and gas must be discharged through the engine's breathing system, otherwise it is easy to cause problems such as sealing failure. In addition, the lubricating oil in the valve chamber also needs to flow back to the oil pan. Therefore, the traditional engine crankcase and cylinder head valve chamber will have a channel connecting to allow the oil and gas to converge and balance, and then connect to the breathing system. This channel is the channel for oil and gas balance and lubricating oil return. Traditional engines are equipped with this channel on the cylinder block and cylinder head, but due to the cylinder block structure layout, the channel is often small and not arranged in every cylinder, which can easily cause the problem of poor oil return, which is not conducive to the oil and gas balance inside the engine.

[0004] 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

[0005] The object of the present invention is to provide a cylinder body structure with a roof-type oil return chamber, which can increase the strength of the cylinder body and the number of oil return channels.

[0006] To achieve the above-mentioned purpose, the present invention provides a cylinder body structure with a roof-type oil return chamber, comprising: a plurality of cylinders, the plurality of cylinders are arranged side by side and located in the cylinder body; an oil return port, the oil return port is located at the top of the cylinder body; a plurality of oil return chambers, the oil return chambers are located in the cylinder body, one of the oil return chambers comprises a first oil return channel, and a second oil return channel, one of the cylinders has an oil return chamber around it, the first oil return channel is located on one side of the cylinder, the second oil return channel is located on the other side of the cylinder, the first oil return channel and the second oil return channel are connected at the top to form a roof-type structure.

[0007] In one or more embodiments, the oil return port includes a first oil return port and a plurality of second oil return ports.

[0008] In one or more embodiments, the first oil return port is located on a side of the top of the cylinder block close to the front end of the vehicle, so as to ensure oil return when the vehicle tilts forward.

[0009] In one or more embodiments, the cylinder block further includes a third oil return passage, wherein the third oil return passage is connected to the first oil return port and is used to return the engine oil flowing into the first oil return port to the oil pan.

[0010] In one or more embodiments, the number of the second oil return ports is consistent with the number of the cylinders, and a second oil return port is provided on a side of each cylinder.

[0011] In one or more embodiments, the cylinder block further includes a plurality of fourth oil return passages, and each of the second oil return ports and the oil return chamber adjacent thereto can be communicated with each other through the fourth oil return passage.

[0012] In one or more embodiments, one of the second oil return ports is communicated with only one of the oil return chambers.

[0013] In one or more embodiments, a first oil return passage is provided in the cylinder away from the first oil return port.

[0014] The present invention provides a cylinder body structure with a roof-type oil return chamber. Oil return channels and oil return ports are arranged around each cylinder, which can solve the problem of insufficient oil return channels and is beneficial to the oil and gas balance inside the engine. In order to strengthen the problem of insufficient strength of the cylinder body after multiple oil return channels are arranged, the oil return channels are arranged as two left and right oil return channels, and the tops of the two oil return channels are connected to form a roof-type structure to avoid stress concentration, effectively ensure the strength of the cylinder body, and thus reduce the occurrence of cylinder body cracking failures. An additional oil return port is arranged at the front end of the cylinder body to ensure the oil return of the engine when the vehicle leans forward. On the premise of improving the ventilation and air permeability of the engine and strengthening the heat dissipation capacity of the engine, the strength of the cylinder body is strengthened, the occurrence of engine failures is reduced, and the safety of the engine is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side projection view of a cylinder body structure with a roof-type oil return chamber provided in an embodiment of the present invention.

[0016] Figure 2 It is a top view of a cylinder body structure with a roof-type oil return chamber provided in an embodiment of the present invention.

[0017] Description of main reference numerals:

[0018] 1- cylinder 1, 2- cylinder body 2, 3- oil return port 3, 31- first oil return port 31, 32- second oil return port 32, 4- oil return chamber 4, 41- first oil return channel 41, 42- second oil return channel 42. 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] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0021] A cylinder block structure with a roof-type oil return chamber, such as Figure 1 to Figure 2 As shown, it includes: a plurality of cylinders 1, which are arranged side by side and located in a cylinder body 2; an oil return port 3, which is located at the top of the cylinder body 2; a plurality of oil return chambers 4, which are located in the cylinder body 2, and one of the oil return chambers 4 includes a first oil return channel 41 and a second oil return channel 42. One of the cylinders 1 is surrounded by one oil return chamber 4, the first oil return channel 41 is located at one side of the cylinder 1, and the second oil return channel 42 is located at the other side of the cylinder 1. The first oil return channel 41 and the second oil return channel 42 are connected at the top to form a roof-type structure.

[0022] Specifically, an oil return chamber 4 is provided around each cylinder 1. The provision of an oil return channel for each cylinder is beneficial to the oil-gas balance inside the engine, improves the ventilation and air permeability of the engine, and strengthens the heat dissipation capacity of the engine. Since the number of oil return chambers 4 is increased, the strength of the cylinder body 2 cannot be guaranteed, so the oil return chamber 4 is designed as two oil return channels, which are connected to form a roof-type structure to avoid stress concentration, thereby ensuring the strength of the cylinder body 2, thereby reducing the occurrence of cracking failures of the cylinder body 2. One end of the oil return chamber 4 is connected to an oil return port 3, and the other end is connected to the oil pan, so that the engine oil from the cylinder head chamber 1 can flow into the oil pan.

[0023] As an optional implementation, the oil return port 3 includes a first oil return port 31 and a plurality of second oil return ports 32 .

[0024] As an optional implementation, the first oil return port 31 is located on one side of the top of the cylinder block 2 close to the front end of the vehicle, so as to ensure oil return when the vehicle tilts forward.

[0025] Specifically, when the vehicle leans forward, the oil is returned through the first oil return port 31 at the front end of the cylinder block 2. The front end of the cylinder block 2 refers to the end of the cylinder block 2 close to the front of the vehicle. Since the cylinders 1 are arranged side by side, the cylinder block 2 is in the shape of a long strip, and the first oil return port 31 is arranged at a position close to the short side of the long strip cylinder block 2.

[0026] As an optional implementation, the cylinder body 2 further includes a third oil return channel, and the third oil return channel is connected to the first oil return port 31 .

[0027] Specifically, one end of the third oil return passage is connected to the first oil return port 31 , and the other end may be connected to the most adjacent oil return chamber 4 , or may be directly connected to the oil pan.

[0028] As an optional implementation, the number of the second oil return ports 32 is consistent with the number of the cylinders 1 , and one second oil return port 32 is provided on the side of each cylinder 1 .

[0029] Specifically, the side of the cylinder 1 refers to the side in which the plurality of cylinder bodies 2 are arranged side by side, with the direction in which the cylinder bodies 2 are arranged side by side as the transverse direction, and the second oil return port 32 is arranged on one side in the longitudinal direction around the cylinder 1. The plurality of second oil return ports 32 are also arranged side by side in the transverse direction. As a preferred embodiment, the second oil return port 32 is arranged on a side of the corresponding cylinder 1 close to the first oil return port 31.

[0030] As an optional implementation, the cylinder body 2 further includes a plurality of fourth oil return passages, and each of the second oil return ports 32 and the adjacent oil return chamber 4 can be communicated with each other through the fourth oil return passage.

[0031] As an optional implementation, one of the second oil return ports 32 is only communicated with one of the oil return chambers 4 .

[0032] Specifically, each second oil return port 32 is adjacent to two oil return chambers 4 at the same time, and there is a one-to-one correspondence between each second oil return port 32 and the oil return chamber 4. For example, the second oil return port 32 is only connected to the oil return chamber 4 on the side close to the first oil return port 31, or is only connected to the oil return chamber 4 on the side far away from the first oil return port 31.

[0033] As an optional implementation, a first oil return passage 41 is provided in the cylinder 1 away from the first oil return port 31 .

[0034] Specifically, usually, each cylinder 1 has a first oil return passage 41 and a second oil return passage 42, but when the volume of the cylinder block 2 is insufficient, the last cylinder block 2 at one end far from the first oil return port 31 may be provided with only one first oil return passage 41 or second oil return passage 42, that is, one oil return passage farthest from the first oil return port 31 is reduced. Since the first oil return port 31 and the fourth oil return passage return oil when the vehicle tilts forward, the oil return demand for the oil return chamber 4 at the end is relatively small, so the number of oil return passages can be reduced.

[0035] By adopting the above technical scheme, a cylinder body 2 structure with a roof-type oil return chamber is provided. An oil return channel and an oil return port 3 are arranged around each cylinder 1, which can solve the problem of insufficient oil return channels and is beneficial to the oil and gas balance inside the engine. In order to strengthen the problem of insufficient strength of the cylinder body 2 after setting multiple oil return channels, the oil return channel is set as two left and right oil return channels, and the tops of the two oil return channels are connected to form a roof-type structure to avoid stress concentration, effectively ensure the strength of the cylinder body 2, and thus reduce the occurrence of cracking failures of the cylinder body 2. An additional oil return port 3 is set at the front end of the cylinder body 2 to ensure the oil return of the engine when the vehicle leans forward. On the premise of improving the ventilation and air permeability of the engine and strengthening the heat dissipation capacity of the engine, the strength of the cylinder body 2 is strengthened, the occurrence of engine failures is reduced, and the safety of the engine is guaranteed.

[0036] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A cylinder block structure with a roof-type oil return chamber, characterized in that: include: A plurality of cylinders, the plurality of cylinders are arranged side by side and located in a cylinder body; An oil return port, the oil return port being located at the top of the cylinder body; Multiple oil return chambers are located in the cylinder body, one oil return chamber includes a first oil return channel and a second oil return channel, one oil return chamber is arranged around the cylinder, the first oil return channel is located on one side of the cylinder, the second oil return channel is located on the other side of the cylinder, the first oil return channel and the second oil return channel are connected at the top to form a roof-type structure.

2. A cylinder structure with a roof-type oil return chamber as claimed in claim 1, characterized in that: The oil return port includes a first oil return port and a plurality of second oil return ports.

3. A cylinder structure with a roof-type oil return chamber as claimed in claim 2, characterized in that: The first oil return port is located on one side of the top of the cylinder body close to the front end of the vehicle, and is used to ensure oil return when the vehicle tilts forward.

4. A cylinder structure with a roof-type oil return chamber as claimed in claim 2, characterized in that: The cylinder block also includes a third oil return passage, which is connected to the first oil return port and is used to return the engine oil flowing into the first oil return port to the oil pan.

5. The cylinder structure with a roof-type oil return chamber as claimed in claim 2, characterized in that: The number of the second oil return ports is consistent with the number of the cylinders, and a second oil return port is provided on the side of each cylinder.

6. A cylinder structure with a roof-type oil return chamber as claimed in claim 2, characterized in that: The cylinder block also includes a plurality of fourth oil return passages, and each of the second oil return ports and the oil return chamber adjacent thereto can be communicated with each other through the fourth oil return passage.

7. A cylinder structure with a roof-type oil return chamber as claimed in claim 6, characterized in that: One of the second oil return ports is communicated with only one of the oil return chambers.

8. The cylinder structure with a roof-type oil return chamber as claimed in claim 1, characterized in that: A first oil return passage is provided in the cylinder away from the first oil return port.

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