Oil displacement type oil-gas separation system

Abstract

The utility model discloses an oil drive type oil-gas separation system which comprises an air cylinder body, an air cylinder cover, an air cylinder cover with a pre-separation structure and an oil-gas separator, the oil-gas separator is fixed on the air cylinder cover, the oil-gas separator comprises an air inlet formed in the top, and the air inlet is connected with the air cylinder cover through a breather pipe; the driving oil inlet is formed in the bottom and is connected with a high-pressure machine oil way of a lubricating system of the cylinder body through an oil inlet pipe; the driving oil return and oil outlet is formed in the bottom and is connected with a crankcase of the cylinder body through an oil return pipe; and the air outlet is formed in the side surface and is communicated with the external atmosphere through an external through pipe. Oil is taken from the main oil duct of the air cylinder body, high oil pressure needed by the oil-gas separator is met, the trend is reasonable and attractive, the outer through pipe is tightly attached to the air cylinder body, arrangement is compact, and the anti-icing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an oil-driven oil-gas separation system. Background Art

[0002] The oil-gas separation system can reduce oil consumption, balance crankcase pressure, and reduce pollutant emissions. In existing technologies, such as the electronically controlled pressure oil-driven oil-gas separation system disclosed in Patent Publication No. "CN116335793A," the engine oil-gas separation system connects an oil-gas separator to the pipeline connecting the crankcase and the intake pipe. This separates the oil and gas drawn from the crankcase, allowing the liquid oil to flow back into the crankcase and the gaseous gas to be drawn into the intake pipe or discharged directly into the atmosphere. However, the aforementioned technical solution requires an external oil supply device to provide the driving force for the oil-gas separator, resulting in additional components and complexity. Furthermore, in actual use, some low-temperature operating conditions may cause the exhaust pipe to freeze.

[0003] The information disclosed in the above background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Utility Model Content

[0004] In response to the above-mentioned existing defects, the purpose of the present utility model is to provide an oil-driven oil-gas separation system, which takes oil from the main oil channel of the cylinder body to meet the high oil pressure required by the oil-gas separator, has a reasonable and beautiful direction, and the external communication pipe is close to the cylinder body, with a compact layout and good anti-icing effect.

[0005] The technical solution of the utility model is as follows:

[0006] An oil-driven oil-gas separation system includes a cylinder block, a cylinder head, a cylinder head cover with a pre-separation structure, and an oil-gas separator. The oil-gas separator is fixed to the cylinder head. The oil-gas separator includes: an air inlet arranged at the top, the air inlet is connected to the cylinder head cover through a vent pipe; a driving oil inlet is arranged at the bottom, the driving oil inlet is connected to the high-pressure oil circuit of the lubrication system of the cylinder block through an oil inlet pipe; a driving oil return and oil outlet is arranged at the bottom, the driving oil return and oil outlet are connected to the crankcase of the cylinder block through an oil return pipe; and an air outlet is arranged on the side, the air outlet is connected to the external atmosphere through an external passage pipe.

[0007] Specifically, the external communication pipe is arranged closely on the side surface of the cylinder body.

[0008] Specifically, it also includes a pressure regulating valve connected to the engine ECU signal, and the pressure regulating valve is used to adjust the flow of the oil inlet pipe in real time according to the oil pressure data of the high-pressure oil circuit of the lubrication system provided by the ECU.

[0009] Beneficial effects of the utility model:

[0010] 1. The utility model provides a stable driving flow and pressure required for the oil-gas separator through the high-pressure oil in the lubrication system, utilizes the existing lubrication system, does not require an additional power source, reduces design complexity and cost, is tightly integrated in space, optimizes space utilization, and improves the overall efficiency of the system.

[0011] 2. This solution does not require an additional pressure sensor for the oil-gas separator. By relying on the high-pressure oil circuit data provided by the ECU, changes in the high-pressure oil flow can automatically adjust the working state of the separator to adapt to different working conditions and ensure optimal performance.

[0012] 3. This solution is reasonable and beautiful. The external pipe is close to the cylinder body, the layout is compact and the anti-icing effect is good, which improves the reliability and durability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of an oil-driven oil-gas separation system of the utility model.

[0014] Figure 2 This is a framework diagram of an oil-driven oil-gas separation system of the utility model.

[0015] In the figure: 1-ventilation pipe, 2-cylinder head cover, 3-oil-gas separator, 4-oil return pipe, 5-oil inlet pipe, 6-external pipe, 7-cylinder head, 8-cylinder block, 9-air inlet, 10-drive oil inlet, 11-drive oil return and oil outlet, 12-air outlet, 13-ECU, 14-pressure regulating valve. DETAILED DESCRIPTION

[0016] To explain the technical content, objectives, and effects of the present invention in detail, the following embodiments are described in conjunction with the accompanying drawings. In the description of the embodiments, it should be understood that the terms indicating orientation or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the embodiments and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0017] like Figure 1 、 2As shown, an oil-driven oil-gas separation system according to a specific embodiment of this scheme includes a cylinder block 8, a cylinder head 7, a cylinder head cover 2 with a pre-separation structure, and an oil-gas separator 3. The oil-gas separator 3 is fixed to the cylinder head 7 via an L-shaped bracket, wherein the oil-gas separator 3 includes an air inlet 9 arranged at the top, a drive oil inlet 10 arranged at the bottom, a drive oil return and oil outlet 11 arranged at the bottom, and an air outlet 12 arranged on the side. The air inlet 9 is connected to the cylinder head cover 2 via a vent pipe 1; the drive oil inlet 10 is connected to the high-pressure oil circuit of the lubrication system of the cylinder block 8 via an oil inlet pipe 5; the drive oil return and oil outlet 11 is connected to the crankcase of the cylinder block 8 via an oil return pipe 4; and the air outlet 12 is connected to the external atmosphere via an external through pipe 6.

[0018] The working principle of this embodiment is:

[0019] The oil and gas pass through the low-pressure drop cylinder head cover 2 with a pre-separation structure. The pre-separation structure is mainly divided into a labyrinth baffle and an impact plate with an integrated felt structure. The oil and gas particles are collected by colliding with the baffle, and the oil is gathered to achieve the pre-separation effect; the oil and gas are further separated through the cylinder head cover 2 and the breather pipe 1 of the oil-gas separator 3. The oil-gas separator 3 provides a stable driving flow and pressure through the high-pressure engine oil in the lubrication system, and takes oil from the main oil channel of the cylinder body 1 to meet the high oil pressure required by the oil-gas separator 3. The oil pressure drives the high-speed rotation centrifugal separation of oil and gas. The separated engine oil returns to the gear chamber and finally returns to the oil pan, and the separated gas is directly discharged into the atmosphere.

[0020] In summary, this embodiment utilizes the existing lubrication system, does not require an additional power source, reduces design complexity and cost, is tightly integrated in space, optimizes space utilization, and improves overall system efficiency.

[0021] As the preferred technical solution of this embodiment, the external through-tube 6 is arranged closely to the side of the cylinder body 8, the line arrangement is reasonable and beautiful, the external through-tube 6 is close to the cylinder body 8, and the heat of the cylinder body 8 itself is utilized. The arrangement is compact and the anti-icing effect is good, thereby improving the reliability and durability of the system.

[0022] As the preferred technical solution of this embodiment, Figure 2As shown, it also includes a pressure regulating valve 14 connected to the engine ECU 13 signal. The pressure regulating valve 14 is used to adjust the flow rate of the oil inlet pipe 5 in real time according to the oil pressure data of the high-pressure oil circuit of the lubrication system provided by the ECU 13. The pressure regulating valve 14 can be set on the oil inlet pipe 5 or integrated into the oil-gas separator 3. In the prior art, it is necessary to set sensors at the inlet and outlet of the oil-gas separator 3 to determine the oil pressure, which makes the entire system costly. Through this solution, the engine ECU 13 signal is used to provide the oil pressure of the high-pressure oil circuit of the lubrication system. The oil-gas separator 3 automatically adjusts its internal operation according to the new oil pressure conditions, such as changing the flow rate, pressure or flow rate, to ensure optimal oil-gas separation efficiency. Through this system, the separator can respond to changes in the oil pressure of the lubrication system in a timely manner and maintain its efficient operation.

[0023] Although the present invention has been described in detail above using specific embodiments, it is readily apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, any such modifications or improvements that do not depart from the spirit of the present invention are intended to fall within the scope of protection claimed herein.

Claims

1. An oil-driven oil-gas separation system, characterized by: It includes a cylinder block, a cylinder head, a cylinder head cover with a pre-separation structure, and an oil-gas separator. The oil-gas separator is fixed on the cylinder head and includes: An air intake port is provided at the top, and the air intake port is connected to the cylinder head cover through a vent pipe; A driving oil inlet is provided at the bottom, and the driving oil inlet is connected to the high-pressure oil circuit of the lubrication system of the cylinder body through an oil inlet pipe; A drive oil return and oil outlet is provided at the bottom, and the drive oil return and oil outlet are connected to the crankcase of the cylinder block through an oil return pipe; And an air outlet is arranged on the side, and the air outlet is connected to the external atmosphere through an external communication pipe.

2. The oil-driven oil-gas separation system according to claim 1, characterized in that: The external communication pipe is arranged closely on the side surface of the cylinder body.

3. The oil-driven oil-gas separation system according to claim 1, characterized in that: It also includes a pressure regulating valve connected to the engine ECU signal, which is used to adjust the flow of the oil inlet pipe in real time according to the oil pressure data of the high-pressure oil circuit of the lubrication system provided by the ECU.

Images