Lubricating system of diesel engine
By introducing filters and oil passages into the diesel engine lubrication system, and combining pressure sensors and temperature sensors to monitor the lubricating oil condition, the problem of reduced lubrication effect caused by impurities in the lubricating oil is solved, thereby improving the lubrication effect and extending the life of the lubricating oil.
Patent Information
- Application Number
- CN202511806573.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-03-03
AI Technical Summary
In existing diesel engine lubrication systems, impurities such as metal shavings, dust, and water vapor enter the lubricating oil, leading to a decrease in lubrication effectiveness, affecting normal engine operation, and shortening oil life.
A diesel engine lubrication system including a filter and oil passages was designed. The filter filters impurities through a filter screen and magnetic blocks. Combined with pressure sensors and temperature sensors, the lubricating oil condition is monitored, and the lubricating oil and filter are replaced in a timely manner to ensure lubrication effect.
It effectively filters impurities, improves lubrication, prevents secondary engine wear, extends lubricant life, and ensures normal engine operation.
Smart Images
Figure CN121593871A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of engine lubrication technology, specifically to a diesel engine lubrication system. Background Technology
[0002] A diesel engine is a device that uses diesel fuel to convert chemical energy into mechanical energy. It is a power machine that uses a diesel engine as a prime mover to drive a generator to produce electricity. A complete unit generally consists of a diesel engine, generator, control box, fuel tank, and control batteries.
[0003] During operation, all components within the engine compartment require lubrication. Current diesel engine lubrication relies on the rotating gears of an oil pump to agitate oil within the combustion chamber, thus lubricating components such as the crankshaft and camshaft. However, metal shavings generated during component operation, dust, carbon deposits oxidized at high temperatures, and some moisture continuously mix into the lubricating oil. Over time, this reduces the oil's lifespan, causing continuous secondary wear on the engine, and in severe cases, potentially affecting its normal operation. Therefore, it is necessary to provide a diesel engine lubrication system to address these issues. Summary of the Invention
[0004] The purpose of this invention is to provide a diesel engine lubrication system that can improve the lubrication effect during operation and prevent secondary wear caused by improper lubrication, thereby solving the problems mentioned in the background art.
[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a diesel engine lubrication system, including an engine body, a side cover, an oil passage, and a filter. The side cover is fixed to the side of the engine body, and the oil passage and filter are disposed on the side cover. The oil passage is used to connect the transmission components between the engine body and the side cover and to transport lubricating oil. The filter is used to filter the lubricating oil input into the oil passage. The filter includes a housing, a filter screen, and a pressure sensor. The housing has several oil outlets. The filter screen is located inside the housing, corresponding to the oil outlet positions. An oil inlet is located at the end of the housing. A bearing inside the housing connects to two fan wheels, one at the end of the housing and corresponding to the oil inlet. The housing has four mounting ports and four oil inlets. The pressure sensor is located inside the mounting ports. One side of the pressure sensor is fixedly connected to the housing, and the other side is fixedly connected to a spring. The other end of the spring is fixedly connected to a movable disc. The movable disc has a side baffle, the height of which is greater than the height of the oil inlets. The filter can filter impurities and debris from the lubricating oil, preventing them from affecting the lubrication of the internal transmission components. It can also determine the lubricating oil's condition based on the opening status of the oil inlets and the lubricating oil temperature, allowing users to replace the lubricating oil and filter in a timely manner. A temperature sensor is fixedly connected to the bottom of the machine body, and the temperature sensor can detect the temperature of the lubricating oil inside the machine body. The diesel engine lubrication system also includes a data acquisition module, a timing module, an analysis module, and a notification module. The data acquisition module collects pressure information and lubricating oil temperature and feeds it back to the analysis module. The timing module intermittently records the usage time after new lubricating oil is added and the time the lubricating oil is at a high temperature, and feeds it back to the analysis module. The analysis module analyzes and judges the lubricating oil usage based on the pressure information, lubricating oil temperature, and lubricating oil usage time to determine the lubricating oil usage status. The notification module provides a notification when the lubricating oil usage is abnormal, and the notification module is connected to a display unit.
[0006] According to the above technical solution, the oil passage includes a first oil passage, a second oil passage, a third oil passage, a fourth oil passage, and an oil inlet channel. The side cover has an installation hole 1. The oil inlet channel is connected to the inside of the machine body and below the installation hole 1. The installation hole 1 is connected to the first oil passage above. The first oil passage is connected to the second oil passage, the third oil passage, and the fourth oil passage.
[0007] According to the above technical solution, a camshaft, a crankshaft, and a speed regulating gear are installed inside the machine body, and the other end of the camshaft, crankshaft, and speed regulating gear is installed on the side cover; The second oil circuit is connected to the crankshaft at the other end, the third oil circuit is connected to the camshaft at the other end, the fourth oil circuit is connected to the speed regulating gear at the other end, and an oil pump is installed on the first oil circuit.
[0008] According to the above technical solution, the filter is disposed inside the mounting hole.
[0009] According to the above technical solution, a number of magnetic blocks are fixedly connected inside the housing. The magnetic blocks can adsorb magnetic debris in the lubricating oil, thus preventing the magnetic debris from accumulating on the filter screen and affecting the filtration effect.
[0010] According to the above technical solution, the machine body is provided with an oil dipstick mounting hole, and an oil dipstick is installed in the oil dipstick mounting hole, so that the oil dipstick can facilitate the user to check the amount of lubricating oil inside the machine body.
[0011] According to the above technical solution, an oil drain hole is provided at the bottom of the machine body, and an oil drain valve is provided inside the oil drain hole.
[0012] According to the above technical solution, a pressure relief valve is installed below the first oil passage. The pressure relief valve can automatically open when the oil pressure inside the oil passage is high, so as to avoid damaging the oil passage.
[0013] According to the above technical solution, the acquisition module is electrically connected to the pressure sensor and the temperature sensor.
[0014] According to the above technical solution, the operating method of the diesel engine lubrication system is as follows: S1: The diesel engine starts, the oil pump starts, and the lubricating oil in the engine body is pumped into the oil passage to fully lubricate the internal parts of the engine body; S2: The acquisition module acquires the temperature values detected by the internal temperature sensor and the pressure values detected by the pressure sensor, which are then analyzed and judged by the analysis module.
[0015] S3: The analysis module makes supplementary judgments based on the lubricating oil usage time.
[0016] S4: The prompt module provides prompts based on the judgment results of the analysis module.
[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting up a filter and an oil passage, can filter the lubricating oil, allowing the impurity-free lubricating oil to enter the oil passage and fully lubricate the parts in the machine body. At the same time, it can also promptly remind the replacement of lubricating oil or filter based on the opening status of the second oil inlet on the filter, the temperature of the lubricating oil, and the usage time of the lubricating oil, so as to avoid the reduction of the filter effect due to abnormal lubricating oil, which would cause continuous secondary wear of the internal parts of the machine body. Attached Figure Description
[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the side cover structure of the present invention; Figure 4 This is a schematic diagram of the overall structure of the filter of the present invention; Figure 5 This is a cross-sectional view of the filter structure of the present invention; Figure 6 This is the invention Figure 5 Enlarged structural diagram of region A in the middle; Figure 7 This is a schematic diagram of the filter housing structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the filter of the present invention; In the diagram: 1. Body; 2. Side cover; 21. Mounting hole one; 3. Oil passage; 31. First oil passage; 32. Second oil passage; 33. Third oil passage; 34. Fourth oil passage; 35. Oil inlet channel; 4. Filter; 41. Housing; 42. Filter screen; 43. Pressure sensor; 44. Fan wheel one; 45. Fan wheel two; 46. Mounting port; 47. Oil inlet two; 48. Movable disc; 49. Spring; 5. Camshaft; 6. Crankshaft; 7. Speed control gear; 8. Magnetic block; 9. Oil dipstick; 10. Oil drain hole; 11. Pressure relief valve; 12. Temperature sensor. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] Please see Figure 1-8 The present invention provides a technical solution: a diesel engine lubrication system, including a body 1, a side cover 2, an oil passage 3 and a filter 4. The side cover 2 is fixed to the side of the body 1. The oil passage 3 and the filter 4 are disposed on the side cover 2. The oil passage 3 is used to connect the transmission components between the body 1 and the side cover 2 and to transport lubricating oil. The filter 4 is used to filter the lubricating oil input to the oil passage 3.
[0021] Please see Figure 1 and Figure 2 The machine body 1 is equipped with a camshaft 5, a crankshaft 6 and a speed regulating gear 7. The other end of the camshaft 5, crankshaft 6 and speed regulating gear 7 is mounted on the side cover 2.
[0022] Please see Figures 1-3The oil passage 3 includes a first oil passage 31, a second oil passage 32, a third oil passage 33, a fourth oil passage 34, and an oil inlet channel 35. The side cover 2 has a mounting hole 21. The oil inlet channel 35 is connected to the inside of the machine body 1 and below the mounting hole 21. The mounting hole 21 is connected to the first oil passage 31 above. The first oil passage 31 is connected to the second oil passage 32, the third oil passage 33, and the fourth oil passage 34. The other end of the second oil passage 32 is connected to the crankshaft 6, the third oil passage 33 is connected to the camshaft 5, and the other end of the fourth oil passage 34 is connected to the speed regulating gear 7. An oil pump is installed on the first oil passage 31. When the oil pump is started, the lubricating oil in the machine body 1 is pumped into the first oil passage 31 through the oil inlet channel 35. The lubricating oil then enters the second oil passage 32, the third oil passage 33, and the fourth oil passage 34 through the first oil passage 31, thereby fully lubricating the internal parts of the machine body 1.
[0023] Please see Figure 1 , Figures 4-8 The filter 4 is located inside the mounting hole 21. The filter 4 includes a housing 41, a filter screen 42, and a pressure sensor 43. The housing 41 has several oil outlets. The filter screen 42 is located inside the housing 41 and corresponds to the position of the oil outlets. The end of the housing 41 has an oil inlet. The bearing inside the housing 41 connects a fan wheel 44 and a fan wheel 45. The fan wheel 44 is located at the end of the housing 41 and corresponds to the position of the oil inlet. The housing 41 has four sets of mounting holes 46 and four sets of oil inlets 47. The pressure sensor 43 is located inside the mounting hole 46. One side of the pressure sensor 43 is fixedly connected to the housing 41, and the other side of the pressure sensor 43 is fixedly connected to a spring 49. The other end of the spring 49 is fixedly connected to a movable disc 48. The movable disc 48 is provided with a side baffle, and the height of the side baffle is greater than the height of the oil inlet 47.
[0024] In actual operation, the lubricating oil in the machine body 1 enters the housing 41 through the oil inlet channel 35 and the oil inlet 1. Under the action of oil pressure and lubricating oil flow pressure, when passing through the fan wheel 44, it can drive the fan wheel 44 to rotate, promoting the flow of lubricating oil inside the housing 41. Then, when the flowing lubricating oil passes through the fan wheel 45, it can drive the fan wheel 45 to rotate, further promoting the lubricating oil to be filtered by the filter screen 42 and discharged from the oil outlet. If impurities on the filter screen 42 accumulate excessively in one place, the rotating fan wheel 45 can also clean the local area, preventing... The clogging of filter screen 42 affects the filtration effect. When the viscosity of the lubricating oil is high and the oil intake of inlet 1 cannot meet the usage requirements, under the action of the internal and external pressure of filter 4 and the adhesion force of lubricating oil, the movable disc 48 can be pushed to slide towards the fan wheel 45 in the mounting port 46, opening the second oil inlet 47. The lubricating oil can enter the housing 41 from the second oil inlet 47, ensuring that the amount of lubricating oil inside the housing 41 is sufficient. At the same time, the sliding movable disc 48 compresses the spring 49, and the spring 49 applies pressure to the pressure sensor 43. The pressure sensor 43 detects the increase in pressure.
[0025] It should be noted that the outer diameter of the movable disc 48 matches the inner diameter of the mounting hole 21 to prevent unfiltered lubricating oil from entering the first oil passage 31.
[0026] Please see Figure 5 Several magnetic blocks 8 are fixedly connected inside the housing 41. The magnetic blocks 8 are used to magnetically attract magnetic metal shavings to prevent the shavings from sticking to the filter screen 42 and affecting the filtration effect.
[0027] Please see Figure 1 An oil dipstick mounting hole is provided on the machine body 1, and an oil dipstick 9 is installed in the oil dipstick mounting hole. The oil dipstick 9 is used to measure the amount of lubricating oil inside the machine body 1.
[0028] The bottom of the machine body 1 is provided with an oil drain hole 10, and an oil drain valve is provided inside the oil drain hole 10. The oil drain valve is used to open when changing the lubricating oil so that the lubricating oil can be discharged from the inside of the machine body 1.
[0029] A temperature sensor 12 is fixedly connected to the bottom of the machine body 1. The temperature sensor 12 is used to detect the temperature of the lubricating oil inside the machine body 1.
[0030] Please see Figure 3 A pressure relief valve 11 is installed below the first oil passage 31. When the oil pressure in the oil passage 3 is too high, the pressure relief valve 11 will automatically open to reduce the pressure and prevent damage caused by excessive oil pressure in the oil passage 3.
[0031] The diesel engine lubrication system also includes a data acquisition module, a timing module, an analysis module, and a prompting module. The data acquisition module is electrically connected to the pressure sensor 43 and the temperature sensor 12. The data acquisition module is used to acquire pressure information and lubricating oil temperature and feed it back to the analysis module. The timing module is used to intermittently record the usage time after the addition of new lubricating oil and the time when the lubricating oil is in a high-temperature state, and feed it back to the analysis module. The analysis module analyzes and judges based on the pressure information, lubricating oil temperature, and lubricating oil usage time to determine the lubricating oil usage status. The prompting module is used to provide prompts when the lubricating oil usage is abnormal, and the prompting module signal is connected to a display unit.
[0032] Operating method of diesel engine lubrication system: S1: The diesel engine starts, the oil pump starts, and the lubricating oil in the engine block 1 is pumped into the oil passage 3 to fully lubricate the internal parts of the engine block 1; S2: The acquisition module acquires the temperature detected by the internal temperature sensor 12 and the pressure detected by the pressure sensor 43 of the machine body 1, and the analysis module performs analysis and judgment.
[0033] Specifically, the analysis module sets an ideal operating temperature range for the lubricating oil based on its properties. This temperature range is denoted as T1-T2, where T1 is the lowest temperature that will not affect the lubricating oil's performance and lifespan, and T2 is the highest temperature that will not affect its performance and lifespan. The analysis module also sets a pressure threshold and a pressure coefficient, with the pressure threshold denoted as F. 限 F 限 The minimum pressure required for the movable disc 48 to compress the spring 49 and control the opening of the second oil inlet 47 is denoted as n, where n is the coefficient corresponding to the pressure value when the second oil inlet 47 is opened to its maximum.
[0034] The data acquisition module records the actual temperature of the lubricating oil detected by temperature sensor 12 as T. 实 The pressure values detected by the four pressure sensors 43 are recorded as F1, F2, F3, and F4, respectively. The average of the four pressure values is calculated and recorded as F. 均 F 均 = (F1+F2+F3+F4) / 4.
[0035] In F 均 ≤F 限 At this time, the lubricating oil viscosity is normal and can meet the normal use requirements, but T occurs. 实 When the temperature is greater than T2, it indicates that the lubricating oil temperature is too high. This information is sent to the prompt module and displayed by the display unit at a low level to prevent the lubricating oil's service life from being reduced due to prolonged high lubricating oil temperature.
[0036] In F 均 >F 限 At this time, the lubricating oil has high viscosity and poor fluidity, which may affect the normal lubrication of the internal parts of the machine body.
[0037] Scenario 1: In T 实 When the value is ≤T1, the diesel engine is in its initial operating state. Due to its own properties, the lubricating oil has a low temperature and high viscosity. The analysis module no longer uses the pressure value detected by the specific pressure sensor 43 for judgment, and does not feed back the situation to the prompt module. The diesel engine continues to run. Case 2: When T1 < T 实 When <T2, the lubricating oil is operating within the ideal temperature range. If F 均 ≤nF 限 To ensure that the lubricating oil can open the oil inlet 47 using its own viscosity, so that there is sufficient lubricating oil inside the housing 41 to ensure normal lubrication, the analysis module feeds back to the prompt module, which is then displayed by the display unit at a low level. If F 均 >nF 限After the lubricating oil opens the oil inlet 47 using its own viscosity, the amount of lubricating oil entering the housing 41 is still insufficient to meet the usage requirements. At this time, there are a lot of impurities in the lubricating oil, which leads to an increase in viscosity and cannot guarantee normal lubrication effect. The analysis module feeds back to the prompt module, which is then displayed by the display unit. The display level is medium. Scenario 3: At this time, T 实 ≥T2 indicates that the lubricating oil temperature is too high, which can easily cause the lubricating oil to oxidize and decompose, reducing the lubrication effect. It can also easily produce coking and carbon deposits, reducing the fluidity of the lubricating oil and thus increasing the viscosity. This increases the possibility of clogging of the filter screen 42 in the filter 4, thereby reducing the lubrication effect of the camshaft 5, crankshaft 6 and speed regulating gear 7 inside the engine block 1. The analysis module feeds back to the prompt module, and the specific level displayed by the display unit needs further judgment.
[0038] S3: The analysis module makes supplementary judgments based on the lubricating oil usage time.
[0039] Specifically, the timing module intermittently records the usage time after the addition of new lubricating oil and the time the lubricating oil remains at a high temperature. A high-temperature state is defined as the lubricating oil temperature exceeding the ideal operating temperature, and the usage time is recorded as T. 总 The time spent in the high-temperature state is denoted as T. 高 The time module also calculates the percentage of time spent in high-temperature conditions, denoted as A, where A = T. 高 / T 总 .
[0040] The analysis module sets thresholds for the proportion of time spent in high-temperature conditions and the usage time of new lubricating oil based on the properties of the lubricating oil. The proportion of time spent in high-temperature conditions is denoted as threshold A. 限 The threshold time for using new lubricating oil is denoted as T. 限 , When case three occurs in S2, if A≤A 限 And T 总 ≤T 限 The lubricating oil is still within its normal service life, and the display unit shows a medium rating. In other cases, the display unit shows a high level; S4: The prompt module provides prompts based on the judgment results of the analysis module.
[0041] Specifically, when the display unit is set to a low level, the user only needs to pay simple attention to the usage situation; When the display unit shows a medium level, the user needs to pay attention and replace the lubricating oil and filter 4 in a timely manner to avoid the display level from becoming high. When the display unit shows a high level, the user needs to replace the lubricating oil and filter 4 in a timely manner to avoid using lubricating oil with poor fluidity for a long time, which would reduce the lubrication effect of the camshaft 5, crankshaft 6 and speed regulating gear 7 inside the machine body 1.
[0042] In this embodiment, the lubricating oil entering the oil passage 3 can be filtered. At the same time, based on the usage of the filter 4 and the lubricating oil, the lubricating oil and filter 4 can be replaced in a timely manner to avoid the filter 4's filtration effect being reduced due to abnormal lubricating oil, which would cause continuous secondary wear on the internal parts of the machine body 1.
[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0044] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A diesel engine lubrication system, comprising an engine block (1), a side cover (2), an oil passage (3), and a filter (4), characterized in that, The side cover (2) is fixed to the side of the body (1), the oil passage (3) and the filter (4) are provided on the side cover (2), the oil passage (3) is used to connect the transmission components between the body (1) and the side cover (2) and to transport lubricating oil, and the filter (4) is used to filter the lubricating oil input into the oil passage (3); The filter (4) includes a housing (41), a filter screen (42), and a pressure sensor (43). The housing (41) has several oil outlets. The filter screen (42) is located inside the housing (41) and corresponds to the position of the oil outlets. An oil inlet is located at the end of the housing (41). A fan wheel (44) and a fan wheel (45) are connected to the housing (41) by a bearing. The fan wheel (44) is located at the end of the housing (41) and corresponds to the position of the oil inlet. Correspondingly, the housing (41) is provided with four sets of mounting ports (46) and four sets of oil inlets (47). The pressure sensor (43) is located inside the mounting port (46). One side of the pressure sensor (43) is fixedly connected to the housing (41), and the other side of the pressure sensor (43) is fixedly connected to a spring (49). The other end of the spring (49) is fixedly connected to a movable disc (48). The movable disc (48) is provided with a side baffle. The height of the side baffle is greater than the height of the oil inlet (47). A temperature sensor (12) is fixedly connected to the bottom of the interior of the body (1); The diesel engine lubrication system also includes a data acquisition module, a timing module, an analysis module, and a notification module. The data acquisition module collects pressure information and lubricating oil temperature and feeds it back to the analysis module. The timing module intermittently records the usage time after new lubricating oil is added and the time the lubricating oil is at a high temperature, and feeds it back to the analysis module. The analysis module analyzes and judges the lubricating oil usage based on the pressure information, lubricating oil temperature, and lubricating oil usage time to determine the lubricating oil usage status. The notification module provides a notification when the lubricating oil usage is abnormal, and the notification module is connected to a display unit.
2. The diesel engine lubrication system according to claim 1, characterized in that, The oil passage (3) includes a first oil passage (31), a second oil passage (32), a third oil passage (33), a fourth oil passage (34), and an oil inlet channel (35). The side cover (2) has an installation hole (21). The oil inlet channel (35) is connected to the inside of the body (1) and below the installation hole (21). The installation hole (21) is connected to the first oil passage (31) above. The first oil passage (31) is connected to the second oil passage (32), the third oil passage (33), and the fourth oil passage (34).
3. The diesel engine lubrication system according to claim 2, characterized in that, The body (1) is equipped with a camshaft (5), a crankshaft (6) and a speed regulating gear (7), and the other end of the camshaft (5), crankshaft (6) and speed regulating gear (7) is mounted on the side cover (2); The other end of the second oil passage (32) is connected to the crankshaft (6), the third oil passage (33) is connected to the camshaft (5), the other end of the fourth oil passage (34) is connected to the speed regulating gear (7), and an oil pump is installed on the first oil passage (31).
4. The diesel engine lubrication system according to claim 3, characterized in that, The filter (4) is disposed inside the mounting hole (21).
5. The diesel engine lubrication system according to claim 4, characterized in that, Several magnetic blocks (8) are fixedly connected inside the housing (41).
6. The diesel engine lubrication system according to claim 5, characterized in that, An oil dipstick mounting hole is provided on the body (1), and an oil dipstick (9) is installed in the oil dipstick mounting hole.
7. The diesel engine lubrication system according to claim 6, characterized in that, The bottom of the machine body (1) is provided with an oil drain hole (10), and an oil drain valve is provided inside the oil drain hole (10).
8. The diesel engine lubrication system according to claim 7, characterized in that, A pressure relief valve (11) is installed below the first oil passage (31).
9. The diesel engine lubrication system according to claim 8, characterized in that, The acquisition module is electrically connected to the pressure sensor (43) and the temperature sensor (12).
10. The diesel engine lubrication system according to claim 9, characterized in that, The operating method of the diesel engine lubrication system: S1: The diesel engine starts, the oil pump starts, and the lubricating oil in the engine body (1) is pumped into the oil passage (3) to fully lubricate the internal parts of the engine body (1); S2: The acquisition module acquires the temperature detected by the internal temperature sensor (12) and the pressure value detected by the pressure sensor (43) of the machine body (1), and the analysis module performs analysis and judgment. S3: The analysis module makes supplementary judgments based on the lubricating oil usage time. S4: The prompt module provides prompts based on the judgment results of the analysis module.