A lubrication system and engine

Abstract

The present application relates to the technical field of engine lubrication, and particularly relates to a lubricating system and an engine, which comprises an oil pump, an oil pan, a main oil passage and a separation device, the oil outlet of the oil pump is communicated with the main oil passage and the oil pan respectively, the oil outlet of the oil pump is further connected with the separation device, the separation device comprises an oil-water separation assembly and an oil-gas separation assembly, the oil-water separation assembly is connected with the oil-gas separation assembly in series, the oil-water separation assembly is arranged between the oil pump and the oil-gas separation assembly, and the oil-gas separation assembly is used for being communicated with the oil pan. The separation device separates oil-water and oil-gas through the internal oil, and the oil without impurities improves the lubricating efficiency of the internal oil of the whole lubricating system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine lubrication, in particular to a lubrication system and an engine. BACKGROUND

[0002] During the operation of the engine system, the friction between the moving parts will consume the engine power, and in severe cases, it will cause abnormal wear or surface ablation of the parts, so the lubrication system plays a very important role. The engine lubrication system provides lubrication and cooling for the engine system parts, reduces the frictional resistance between the parts, improves the overall thermal efficiency of the machine; at the same time, it can reduce the abnormal wear of the parts, and improve the reliability, durability and service life of the entire engine system.

[0003] However, in the prior art, the hydrogen engine will produce a large amount of water-containing products such as water vapor in the combustion products during operation, which will be mixed into the oil inside during the oil cooling process, resulting in poor lubrication effect of the oil, and the oil content in the downshift gas is large, which will cause unnecessary loss of oil if directly discharged. In order to solve the above problems, a lubrication system needs to be proposed. SUMMARY

[0004] The present application discloses a lubrication system and an engine for separating oil-water and oil-liquid separation of the oil to improve the lubrication efficiency of the oil.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme:

[0006] In a first aspect, the present application provides a lubrication system, comprising: an oil pump, an oil pan, a main oil passage and a separation device;

[0007] The oil outlet of the oil pump is in communication with the main oil passage and the oil pan, and the oil outlet of the oil pump is also connected with the separation device, the separation device comprises an oil-water separation assembly and an oil-gas separation assembly, the oil-water separation assembly and the oil-gas separation assembly are connected in series, the oil-water separation assembly is arranged between the oil pump and the oil-gas separation assembly, and the oil-gas separation assembly is used to communicate with the oil pan.

[0008] The application adds a separation assembly, and sets the separation assembly as a water-oil separation assembly and an oil-gas separation assembly in series, that is, the water-oil separation assembly is used for separating water vapor and other water-containing components in the engine oil, and the oil-gas separation assembly is used for separating the engine oil in the gas, and then the engine oil without water is returned to the inside of the oil pan, in the above process, the engine oil in the oil pan is extracted by the oil pump into the pipeline, part of which enters the main oil passage for lubricating the engine parts, and the other part enters the inside of the separation device, so that the separation device separates the oil-water and oil-gas through the inside of the engine oil, and the engine oil without impurities improves the lubrication efficiency of the engine oil in the entire lubrication system.

[0009] Optionally, the separation device further comprises a separation base.

[0010] The water-oil separation assembly is connected with the oil-gas separation assembly through the separation base, the separation base is provided with an oil inlet and an oil return port, the oil return port is communicated with the oil pan, one end of the oil inlet is communicated with the oil pump, and the other end is connected with a first passage for conveying medium into the inside of the water-oil separation assembly, the first passage is located in the inside of the separation base, the separation base is further provided with a second passage and a third passage, one end of the second passage is communicated with the water-oil separation assembly, the other end is communicated with the third passage, and the third passage is provided with a nozzle for driving the oil-gas separation assembly to work.

[0011] Optionally, the oil-gas separation assembly comprises an oil-gas separator body, an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are arranged on two sides of the oil-gas separator body away from each other.

[0012] Optionally, the nozzle faces the impeller on the oil-gas separator body.

[0013] Optionally, the water-oil separation assembly comprises a water-oil separator shell and a water-oil separator body, the water-oil separator body is sleeved in the inside of the water-oil separator shell and forms an accommodation space with the water-oil separator shell, the accommodation space is communicated with the first passage, and the water-oil separator body is communicated with the second passage.

[0014] Optionally, the water-oil separator body comprises a filter layer, a hydrophilic layer and a hydrophobic layer arranged in a first direction, and the first direction is from the inside wall of the water-oil separator shell to the center of the water-oil separator body.

[0015] Optionally, the filter layer comprises a particulate filter screen, the hydrophilic layer comprises a glass fiber demulsification coalescence layer, and the hydrophobic layer comprises a hydrophobic separation screen.

[0016] Optionally, the lubricating system further comprises a water level sensor and a water drain valve, the water drain valve is arranged on the side of the oil-water separator body away from the separation base, and the water level sensor is arranged between the water drain valve and the oil-water separator body.

[0017] Optionally, the oil-water separation assembly comprises an oil fine filter.

[0018] In a second aspect, the present application further provides an engine comprising the lubricating system according to any one of the preceding aspects and an engine body, the lubricating system being configured to communicate with the engine body. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A schematic diagram of the lubricating system according to an embodiment of the present application is shown in FIG. 1.

[0020] Figure 2 A front view of the separation device according to an embodiment of the present application is shown in FIG. 2.

[0021] Figure 3 A rear view of the separation device according to an embodiment of the present application is shown in FIG. 3.

[0022] Figure 4 A schematic diagram of the separation base according to an embodiment of the present application is shown in FIG. 4.

[0023] Figure 5 A schematic diagram of the first passage and the flow direction of the engine oil according to an embodiment of the present application is shown in FIG. 5.

[0024] Figure 6 A schematic diagram of the second passage and the flow direction of the engine oil according to an embodiment of the present application is shown in FIG. 6.

[0025] Figure 7 A schematic diagram of the third passage and the flow direction of the engine oil according to an embodiment of the present application is shown in FIG. 7.

[0026] Figure 8 A schematic diagram of the oil-water separator housing and the oil-water separator body according to an embodiment of the present application is shown in FIG. 8.

[0027] Wherein: 1-oil pump, 2-oil sump, 3-main oil passage, 4-oil-water separator assembly, 41-oil-water separator housing, 42-oil-water separator body, 421-filter layer, 422-hydrophilic layer, 423-hydrophobic layer, 5-oil-gas separator body, 51-inlet pipe, 52-outlet pipe, 6-separation base, 61-first passage, 62-second passage, 63-third passage, 64-nozzle, 7-oil inlet, 8-oil return port. DETAILED DESCRIPTION

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0029] As shown in Figure 1 , in a first aspect, the present application provides a lubricating system, comprising: an oil pump 1, an oil sump 2, a main oil passage 3 and a separation device;

[0030] The oil outlet of the oil pump 1 is in communication with the main oil passage 3 and the oil sump 2, respectively, and the oil outlet of the oil pump 1 is further connected with the separation device, which comprises an oil-water separation assembly 4 and an oil-gas separation assembly, the oil-water separation assembly 4 is in series with the oil-gas separation assembly, the oil-water separation assembly 4 is arranged between the oil pump 1 and the oil-gas separation assembly, and the oil-gas separation assembly is used to communicate with the oil sump 2.

[0031] The present application increases the separation assembly, and sets the separation assembly as the oil-water separation assembly 4 and the oil-gas separation assembly in series, that is, the oil-water separation assembly 4 is used to separate the water vapor and other water-containing components in the engine oil, and the oil-gas separator is used to separate the engine oil in the gas, and then the engine oil without water is returned to the inside of the oil sump 2. In the above process, the oil pump 1 extracts the engine oil in the oil sump 2 to the pipeline, part of which enters the main oil passage 3 for lubricating the engine parts, and the other part enters the inside of the separation device, so that the separation device separates the oil-water and oil-gas in the engine oil inside it, and the engine oil without impurities improves the lubrication efficiency of the engine oil inside the entire lubricating system.

[0032] In a possible implementation manner, please continue to refer to Figure 1 (not shown in the figure), the lubricating system of the engine further comprises a one-way valve connected with the oil pump 1, and a temperature control valve and a bypass valve connected with the one-way valve, on the basis of which the bypass valve is further connected with an oil cooler, an oil filter and the like, and the mounting mode of the above components is a common solution for those skilled in the art, and the present application will not be specifically described.

[0033] In a possible implementation manner, please refer to Figures 2-7 , the separation device further comprises a separation base 6;

[0034] The oil-water separator 4 is connected to the oil-gas separator 6 via a separator base 6. The separator base 6 has an oil inlet 7 and an oil return port 8. The oil return port 8 is connected to the oil pan 2. One end of the oil inlet 7 is connected to the oil pump 1, and the other end is connected to a first passage 61 for conveying the medium to the inside of the oil-water separator 4. The first passage 61 is located inside the separator base 6. The separator base 6 also has a second passage 62 and a third passage 63. One end of the second passage 62 is connected to the oil-water separator 4, and the other end is connected to the third passage 63. The third passage 63 has a nozzle 64 for driving the oil-gas separator 4. In this structure, the oil entering through the oil inlet 7 is first guided into the oil-water separator 4 by the inclined first passage 61. The water in the oil is removed by the dehydration function of the oil-water separator 4 itself. Then, refer to... Figure 6 The engine oil flows back from the second passage 62 to the interior of the separator base 6, and then enters the third passage 63 connected to the second passage 62. For details, please refer to [reference needed]. Figure 7 In the diagram, the oil passing through the third passage 63 reaches the nozzle 64. Due to the small diameter of the nozzle 64 and the excessive oil pressure, the oil inside the third passage 63 is sprayed out from the nozzle 64, thereby driving the oil-gas separator to work and separate the oil from the exhaust gas in the oil-gas mixture.

[0035] In one possible implementation method, please refer to Figure 2 , Figure 3 The oil-gas separation assembly includes an oil-gas separator body 5, an inlet pipe 51, and an outlet pipe 52. The inlet pipe 51 and the outlet pipe 52 are located on opposite sides of the oil-gas separator body 5. In the above structure, the oil-gas separator body 5 is provided with an inlet pipe 51 and an outlet pipe 52. The outlet pipe 52 is used to clean the exhaust gas after oil-gas separation, while the inlet pipe 51 is used to further recover the oil in the exhaust gas. The impeller in the oil-gas separator body 5 is driven by the oil sprayed from the nozzle 64, so that the impeller of the oil-gas separator body 5 in this application does not need to be driven separately, which reduces energy consumption to a certain extent.

[0036] In one possible implementation, the direction of the nozzle 64 is towards the impeller on the oil-gas separator body 5, in this application, the power required to drive the impeller is derived from the oil sprayed by the nozzle 64, and the direction of the nozzle 64 towards the impeller on the oil-gas separator body 5 can ensure that the range of oil sprayed by the nozzle 64 covers the impeller. It is worth noting that the direction of the nozzle 64 is in the same horizontal plane as the impeller, so that the impeller on the oil-gas separator body 5 can obtain the maximum driving force, and thus the impeller can better filter the oil in the exhaust gas. In the above structure, the oil-water separator body 42 and the oil-gas separator body 5 are connected in series by taking the flow of oil as the main line, which can provide enough energy to drive the oil-gas separator body 5 to work normally under the condition that the flow resistance loss of the oil-water separator body 42 is small.

[0037] In one possible implementation, the oil-water separation assembly 4 includes an oil-water separator shell 41 and an oil-water separator body 42. The oil-water separator body 42 is arranged inside the oil-water separator shell 41 and forms a containing space with the oil-water separator shell 41. The containing space is in communication with the first passage 61, and the oil-water separator body 42 is in communication with the second passage 62. By using the oil-water separator body 42, the oil entering the oil-water separator shell 41 from the first passage 61 can fully wrap the oil-water separator body 42, so that the oil-water separator body 42 can isolate and separate the water.

[0038] In one possible implementation, please refer to Figure 8 The oil-water separator body 42 includes a filter layer 421, a hydrophilic layer 422, and a hydrophobic layer 423 arranged in a first direction. The first direction is from the inner wall of the oil-water separator shell 41 to the center of the oil-water separator body 42. In the above structure, by arranging the filter layer 421, the hydrophilic layer 422, and the hydrophobic layer 423 in layers, the oil first passes through the filter layer 421 to further filter the large particles in the oil, and then the water in the oil is broken and aggregated from small particles to large particles in the hydrophilic layer 422. Finally, the water is isolated and settled in the hydrophobic layer 423. After the above steps, the water content in the oil is reduced, which ensures the continuity of the lubricating oil film and the reliable operation of the friction pair.

[0039] In one possible implementation, please refer to Figure 8, the particle filter screen is used to filter large particles in the engine oil, to avoid the large particles in the engine oil from blocking the hydrophilic layer 422 and the hydrophobic layer 423, and the glass fiber demulsification coalescence layer is used to coalesce small water droplets into large water droplets, and the hydrophobic layer 423 is used to isolate and settle the large water droplets coalesced by the glass fiber demulsification coalescence layer, so that the engine oil is ensured to be free of water droplets.

[0040] In a possible implementation, the lubricating system further comprises a water level sensor and a water drain valve, the water drain valve is arranged on the side of the oil-water separator body 42 away from the separation base 6, and the water level sensor is arranged between the water drain valve and the oil-water separator body 42. The lubricating system can also be provided with the water level sensor and the water drain valve. The water level sensor is used to sense the capacity of the water droplets isolated by the oil-water separator body 42, and the water level sensor is signal-connected with the lubricating system. When the capacity of the water droplets isolated by the oil-water separator body 42 is too large, the water level sensor is used to control the water drain valve to be opened, so as to drain the water droplets isolated by the oil-water separator body 42, and the normal use of the oil-water separator body 42 is ensured.

[0041] In a possible implementation, the oil-water separation assembly 4 comprises an engine oil fine filter. In the present application, the oil-water separation assembly 4 can also be an engine oil fine filter, to filter smaller impurity particles that cannot be filtered by a common engine oil filter.

[0042] In a possible implementation, the second aspect, the present application further provides an engine comprising the lubricating system according to any one of the embodiments and an engine body, the lubricating system being used to communicate with the engine body. The lubricating system is arranged to ensure the normal use of the engine.

[0043] Obviously, persons having ordinary skill in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the present application as defined by the following claims and their equivalents, they are also intended to be included in the present application.

Claims

1. A lubrication system, characterized in that, include: Oil pump, oil pan, main oil passage and separator; The oil outlet of the oil pump is connected to the main oil passage and the oil pan respectively. The oil outlet of the oil pump is also connected to the separation device. The separation device includes an oil-water separation component and an oil-gas separation component. The oil-water separation component and the oil-gas separation component are connected in series. The oil-water separation component is disposed between the oil pump and the oil-gas separation component. The oil-gas separation component is used to communicate with the oil pan. The separation device also includes a separation base; The oil-water separation assembly is connected to the oil-gas separation assembly via the separation base. The separation base has an oil inlet and an oil return port. The oil return port is connected to the oil pan. One end of the oil inlet is connected to the oil pump, and the other end is connected to a first passage for conveying the medium to the interior of the oil-water separation assembly. The first passage is located inside the separation base. The separation base also has a second passage and a third passage. One end of the second passage is connected to the oil-water separation assembly, and the other end is connected to the third passage. The third passage has a nozzle for driving the oil-gas separation assembly to work.

2. The lubrication system according to claim 1, characterized in that, The oil-gas separation assembly includes an oil-gas separator body, an inlet pipe, and an outlet pipe, with the inlet pipe and the outlet pipe located on opposite sides of the oil-gas separator body.

3. The lubrication system according to claim 2, characterized in that, The nozzle faces the impeller on the oil-gas separator body.

4. The lubrication system according to claim 1, characterized in that, The oil-water separation assembly includes an oil-water separator shell and an oil-water separator body. The oil-water separator body is fitted inside the oil-water separator shell and forms a receiving space with the oil-water separator shell. The receiving space is connected to the first passage, and the oil-water separator body is connected to the second passage.

5. The lubrication system according to claim 4, characterized in that, The oil-water separator body includes a filter layer, a hydrophilic layer, and a hydrophobic layer stacked along a first direction, the first direction being the direction from the inner sidewall of the oil-water separator shell to the center of the oil-water separator body.

6. The lubrication system according to claim 5, characterized in that, The filter layer includes a particulate filter screen, the hydrophilic layer includes a glass fiber demulsification and aggregation layer, and the hydrophobic layer includes a hydrophobic separation mesh.

7. The lubrication system according to claim 5, characterized in that, The lubrication system also includes a water level sensor and a drain valve. The drain valve is located on the side of the oil-water separator body away from the separator base, and the water level sensor is located between the drain valve and the oil-water separator body.

8. The lubrication system according to claim 1, characterized in that, The oil-water separation assembly includes an oil filter.

9. An engine, characterized in that, Includes a lubrication system as described in any one of claims 1-8 and an engine body, wherein the lubrication system is configured to communicate with the engine body.

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