Supercharger structure for preventing air from entering due to excessive pressure of crankcase
By designing a buffer chamber in the supercharger structure, the problem of the engine oil directly entering the crankcase in the supercharger return pipe has been solved, which extends the storage time of the engine oil, stabilizes the cylinder pressure, improves the combustion effect, and avoids explosion cigarette.
Patent Information
- Application Number
- CN202421502479.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the prior art, the oil in the supercharger return pipe enters the crankcase directly, causing abnormal pressure inside the crankcase, air penetrates into the supercharger through the supercharger return pipe, resulting in a decrease in the cylinder pressure and poor combustion. smoke.
A supercharger structure is designed, including a crankcase, side cover shell and buffer chamber. The top of the buffer chamber connects to the supercharger return pipe. An oil inlet is set on the crankcase, and the height of the oil inlet is lower than that of the supercharger. The height of the oil return pipe is set by the buffer chamber so that the engine oil can save one end of time and prevent air from entering.
The setting of the buffer chamber extends the storage time of the engine oil, prevents air from entering the supercharger when the crankcase pressure is abnormal, ensures the stability of the cylinder pressure, improves the combustion effect, and avoids smoke.
Smart Images
Figure CN222501899U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile engines, and in particular to a supercharger structure for preventing air from entering due to excessive crankcase pressure. Background Art
[0002] The upper crankcase is cast as one with the cylinder block, and the lower crankcase is used to store lubricating oil and seal the upper crankcase, so it is also called the oil pan. The oil pan is subjected to very little force and is generally made of thin steel plates. Its shape depends on the overall layout of the engine and the capacity of the engine oil. The oil pan is equipped with an oil stabilizing baffle to prevent excessive fluctuations in the oil level when the car is shaken. There is also an oil drain plug at the bottom of the oil pan, which is usually equipped with a permanent magnet to absorb metal chips in the lubricating oil and reduce engine wear. A gasket is installed between the joint surfaces of the upper and lower crankcases to prevent lubricating oil leakage.
[0003] In the prior art, the oil in the supercharger oil return pipe directly enters the crankcase. When the internal pressure of the crankcase is abnormal, air will directly enter the supercharger through the supercharger oil return pipe, thereby causing the cylinder pressure to decrease, resulting in poor combustion and smoke. Summary of the invention
[0004] In order to overcome the existing deficiencies, an embodiment of the present application provides a supercharger structure that prevents air from entering due to excessive crankcase pressure. The structure can solve the problem that the oil in the supercharger oil return pipe directly enters the crankcase. In this way, when the internal pressure of the crankcase is abnormal, air will directly enter the supercharger through the supercharger oil return pipe, thereby causing the cylinder pressure to decrease, resulting in poor combustion and smoke.
[0005] The technical solution adopted by the embodiment of the present application to solve its technical problem is: a supercharger structure for preventing air from entering due to excessive crankcase pressure, comprising a crankcase, a side cover shell being fixedly connected to the outer side of the crankcase, a buffer chamber being formed between the inner wall of the side cover shell and the outer wall of the crankcase, the top of the buffer chamber being connected to a supercharger oil return pipe, and an oil inlet connected to the buffer chamber is provided on the crankcase, and the height of the oil inlet is lower than the height of the supercharger oil return pipe.
[0006] In a specific embodiment, a partition plate is provided in the middle of the buffer cavity, and the bottom end of the partition plate does not contact the inner bottom wall of the buffer cavity, so that the buffer cavity forms a U-shape.
[0007] In a specific embodiment, the bottom end of the partition plate and the inner bottom wall of the buffer cavity form an oil passage.
[0008] In a specific embodiment, it also includes a body, and the crankcase is installed on the body.
[0009] In a specific embodiment, an oil pan is disposed at the bottom of the machine body.
[0010] In a specific implementation manner, an oil inlet channel is opened at the top of the buffer chamber, and the supercharger oil return pipe is connected to the oil inlet channel.
[0011] In a specific embodiment, a flange is connected to the end of the supercharger oil return pipe, and the flange is connected to the crankcase and enables the supercharger oil return pipe to communicate with the oil inlet channel.
[0012] In a specific embodiment, a sealing gasket is provided at the connection between the crankcase and the side cover plate shell.
[0013] The advantages of the embodiments of the present application are:
[0014] By setting up the buffer chamber, the engine oil can be preserved for a certain period of time, which can prevent the air from entering the supercharger through the supercharger return pipe when the crankcase pressure is abnormally increased, so as to ensure the normal operation of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of a three-dimensional structure of a supercharger structure for preventing air from entering due to excessive crankcase pressure provided by an embodiment of the present application;
[0016] Figure 2 A side view of a supercharger structure for preventing air from entering due to excessive crankcase pressure provided by an embodiment of the present application;
[0017] Figure 3 A cross-sectional view of a supercharger structure for preventing air from entering due to excessive crankcase pressure provided by an embodiment of the present application;
[0018] Figure 4 Provided for the implementation of this application Figure 3 Middle XX cross section.
[0019] In the figure: 1-machine body; 2-crankcase; 3-supercharger oil return pipe; 4-oil inlet; 5-side cover shell; 6-buffer chamber; 61-partition plate; 62-oil channel; 7-oil pan. DETAILED DESCRIPTION
[0020] The technical solution in the embodiment of the present application is to solve the problem that the oil in the supercharger oil return pipe directly enters the crankcase. In this way, when the internal pressure of the crankcase is abnormal, air will directly enter the supercharger through the supercharger oil return pipe, thereby causing the cylinder pressure to decrease, resulting in poor combustion and smoke. The overall idea is as follows:
[0021] See also Figure 1-Figure 4A supercharger structure for preventing air from entering due to excessive crankcase pressure, comprising a side cover plate 5.
[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , including a crankcase 2, a side cover plate shell 5 is fixedly connected to the outside of the crankcase 2, a buffer chamber 6 is formed between the inner wall of the side cover plate shell 5 and the outer wall of the crankcase 2, the top of the buffer chamber 6 is connected to the supercharger oil return pipe 3, and the crankcase 2 is provided with an oil inlet 4 connected to the buffer chamber 6, and the height of the oil inlet 4 is lower than the height of the supercharger oil return pipe 3. Among them, the engine oil inside the supercharger enters the buffer chamber 6 through the supercharger oil return pipe 3, and after reaching a certain liquid level, it enters the crankcase 2 through the oil inlet 4. The setting of the buffer chamber 6 allows the engine oil to be stored for a period of time, and can prevent the air from entering the supercharger through the supercharger oil return pipe 3 when the crankcase 2 pressure is abnormally increased, so as to ensure the normal operation of the entire vehicle.
[0023] A partition plate 61 is provided in the middle of the buffer chamber 6. Specifically, the two sides of the partition plate 61 are connected to the outer wall of the crankcase 2 and the inner wall of the side cover plate shell 5, respectively, and the bottom end of the partition plate 61 does not contact the inner bottom wall of the buffer chamber 6, so that the buffer chamber 6 forms a U-shape. The bottom end of the partition plate 61 and the inner bottom wall of the buffer chamber 6 form an oil passage 62. The U-shaped buffer chamber 6 allows the oil to flow longer inside the buffer chamber 6, thereby increasing the storage time of the oil.
[0024] The machine body 1 is also included, and a crankcase 2 is mounted on the machine body 1. An oil pan 7 is arranged at the bottom of the machine body 1.
[0025] An oil inlet passage is provided at the top of the buffer chamber 6, and the supercharger oil return pipe 3 is connected to the oil inlet passage. A flange is connected to the end of the supercharger oil return pipe 3, and the flange is connected to the top wall of the buffer chamber 6 to connect the supercharger oil return pipe 3 to the oil inlet passage. A sealing gasket is provided at the connection between the crankcase 2 and the side cover plate shell 5.
[0026] When using this application:
[0027] The engine oil in the supercharger enters the buffer chamber 6 through the supercharger return oil pipe 3, and after reaching a certain liquid level, enters the crankcase 2 through the oil inlet 4. The buffer chamber 6 is provided so that the engine oil can be stored for a period of time, and the air can be prevented from entering the supercharger through the supercharger return oil pipe 3 when the crankcase 2 pressure is abnormally increased, so as to ensure the normal operation of the entire vehicle.
[0028] In summary, the present application sets the buffer chamber 6 so that the engine oil can be preserved for a certain period of time, and can prevent the air from entering the supercharger through the supercharger return pipe 3 when the crankcase 2 pressure is abnormally increased, so as to ensure the normal operation of the entire vehicle.
[0029] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.
Claims
1. A supercharger structure for preventing air from entering due to excessive crankcase pressure, characterized in that: The invention comprises a crankcase (2), the outer side of the crankcase (2) being fixedly connected to a side cover plate shell (5), a buffer chamber (6) being formed between the inner wall of the side cover plate shell (5) and the outer wall of the crankcase (2), the top of the buffer chamber (6) being connected to a supercharger oil return pipe (3), an oil inlet (4) being connected to the buffer chamber (6) being provided on the crankcase (2), and the height of the oil inlet (4) being lower than the height of the supercharger oil return pipe (3).
2. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 1, characterized in that: A partition plate (61) is provided in the middle of the buffer chamber (6), and the bottom end of the partition plate (61) does not contact the inner bottom wall of the buffer chamber (6), so that the buffer chamber (6) forms a U-shape.
3. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 2, characterized in that: The bottom end of the partition plate (61) and the inner bottom wall of the buffer chamber (6) form an oil passage (62).
4. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 1, characterized in that: It also comprises a machine body (1), and the crankcase (2) is mounted on the machine body (1).
5. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 4, characterized in that: An oil pan (7) is arranged at the bottom of the machine body (1).
6. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 1, characterized in that: An oil inlet passage is provided at the top of the buffer chamber (6), and the supercharger oil return pipe (3) is in communication with the oil inlet passage.
7. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 6, characterized in that: The end of the supercharger oil return pipe (3) is connected to a flange, which is connected to the crankcase (2) and enables the supercharger oil return pipe (3) to communicate with the oil inlet channel.
8. The supercharger structure for preventing air from entering due to excessive crankcase pressure as claimed in claim 1, characterized in that: A sealing gasket is provided at the connection between the crankcase (2) and the side cover plate shell (5).