Lubricating oil liquid level dynamic monitoring system for bench endurance test

Abstract

The utility model discloses a dynamic monitoring system for the liquid level of lubricating oil in a rack endurance test, relates to an engine, and solves the technical problem that the detection precision of a liquid level meter is influenced by splashing and backflow of the lubricating oil in the existing engine. Comprising a liquid level meter, a crankcase connecting pipe and an oil pan connecting pipe, the signal output end of the liquid level meter is electrically connected with an ECU, one end of the crankcase connecting pipe is in deflection connection with a crankcase, the other end of the crankcase connecting pipe is in deflection connection with a first port of the liquid level meter, the crankcase connecting pipe comprises an inverted-U-shaped pipe section, and the inverted-U-shaped pipe section is connected with a second port of the liquid level meter. The oil pan is connected with a second port of the liquid level meter through an oil pan connecting pipe. The accuracy of reading of the liquid level meter is guaranteed, splashing and backflow of lubricating oil are avoided through deflection connection, and meanwhile the influence of oil flow impact force is reduced.

Description

Technical Field

[0001] This utility model relates to engines, and more specifically, it relates to a dynamic monitoring system for lubricating oil level in bench durability testing. Background Technology

[0002] Engine bench durability testing is a crucial testing method for evaluating engine reliability. Within this testing, the lubricating oil level dynamic monitoring system is a monitoring and control system. This system is essential for ensuring the accuracy and safety of the test. Its main functions include:

[0003] 1. Real-time monitoring: The system can monitor the lubricating oil level in real time and can operate for long periods without stopping, ensuring that the level remains within a safe range during bench durability testing.

[0004] 2. Liquid level alarm: When the liquid level is too high or too low, the system will automatically issue an alarm to prevent oil leakage or insufficient liquid during the test.

[0005] 3. Automatic replenishment: When the liquid level is lower than the set threshold, the system can automatically start the replenishment mechanism to ensure the continuous conduct of the durability test.

[0006] 4. Data recording: The system can record dynamic changes in fluid level and the amount of oil added, providing accurate data support for subsequent analysis and troubleshooting.

[0007] 5. Highly adaptable, the system can calibrate the upper and lower limits of the liquid level according to different engine models, meeting the needs of bench testing for different engine models.

[0008] Monitoring the oil level in the oil pan is crucial during testing. Because bench durability tests are lengthy, insufficient lubricating oil can disrupt the test and even damage the engine. Therefore, accurate detection of the lubricating oil level in the oil pan is essential. However, current methods for detecting lubricating oil in the oil pan are inaccurate and prone to large errors. Error analysis of bench tests reveals that the main cause is lubricating oil splashing and backflow, which affects the level gauge, resulting in insufficient accuracy and large errors.

[0009] Secondly, structural analysis revealed that the main cause was the oil pipes between the crankcase and the level gauge, as well as between the oil pan and the level gauge. The layout of these two oil pipes was arbitrary, typically using a straight-in-straight pipe of suitable length. During testing, it was found that lubricating oil frequently splashed into the pipes between the crankcase and the level gauge, causing backflow and resulting in errors. Utility Model Content

[0010] The technical problem to be solved by this utility model is to provide a dynamic monitoring system for lubricating oil level in bench durability testing, which addresses the shortcomings of existing technologies and solves the technical problem that splashing and backflow of lubricating oil in existing engines affects the detection accuracy of the level gauge.

[0011] The present invention discloses a dynamic monitoring system for lubricating oil level in bench durability testing, comprising a level gauge, the signal output terminal of which is electrically connected to an ECU; a crankcase connecting pipe and an oil pan connecting pipe, one end of which is deflectedly connected to the crankcase, and the other end of which is deflectedly connected to a first port of the level gauge; the crankcase connecting pipe includes an inverted U-shaped section; and the oil pan is connected to a second port of the level gauge via the oil pan connecting pipe.

[0012] As a further improvement, the crankcase connecting pipe also includes a first deflection part and a second deflection part. One end of the inverted U-shaped pipe section is fixedly connected to the first deflection part, and the other end of the inverted U-shaped pipe section is fixedly connected to the second deflection part. The first deflection part is deflectedly connected to the crankcase, and the second deflection part is deflectedly connected to the first port of the level gauge.

[0013] Furthermore, the inverted U-shaped pipe section, the first deflection part, and the second deflection part are an integral structure.

[0014] Furthermore, the first deflection part forms a first deflection angle with the side wall of the crankcase, and the second deflection part forms a second deflection angle with the side wall of the level gauge.

[0015] Furthermore, both the first deflection angle and the second deflection angle are 20°-40°.

[0016] Furthermore, both the first deflection angle and the second deflection angle are 30°.

[0017] Furthermore, the crankcase connecting pipe is fitted with a wire mesh.

[0018] Furthermore, the oil pan is connected to the engine lubricating oil filler port via a supply pipe, and a supply oil pump is installed on the supply pipe. The supply oil pump is electrically connected to the ECU via an oil pump controller.

[0019] Beneficial effects

[0020] The advantages of this utility model are:

[0021] 1. This utility model includes a crankcase connecting pipe and an oil pan connecting pipe. One end of the crankcase connecting pipe is deflected to the crankcase, and the other end is deflected to the first port of the level gauge. The oil pan is connected to the second port of the level gauge through the oil pan connecting pipe. The inverted U-shaped pipe section design of the crankcase connecting pipe effectively prevents lubricating oil splashing and backflow, ensuring the accuracy of the level gauge reading. The deflected connection prevents lubricating oil splashing and backflow while reducing the impact of oil flow impact, ensuring that the level gauge and crankcase always maintain a uniform environmental pressure, thus improving the stability and reliability of the system.

[0022] 2. This utility model includes a supply pipeline with a supply oil pump installed on it. The supply oil pump is electrically connected to the ECU via an oil pump controller, enabling automatic replenishment of lubricating oil and improving the stability and reliability of the system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall liquid level monitoring system of this utility model;

[0024] Figure 2 This is a schematic diagram of the oil pan refueling structure of this utility model.

[0025] Wherein: 1-Level gauge, 2-Crankcase connecting pipe, 21-Reverse U-shaped pipe section, 22-First deflection part, 23-Second deflection part, 24-First deflection angle, 25-Second deflection angle, 3-Oil pan connecting pipe, 4-ECU, 5-Crankcase, 6-Oil pan, 7-First port, 8-Second port, 9-Replenishment pipe, 10-Replenishment oil pump, 11-Oil pump controller. Detailed Implementation

[0026] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0027] See Figures 1-2 This utility model discloses a dynamic monitoring system for lubricating oil level in bench durability testing, comprising a level gauge 1. The signal output terminal of the level gauge 1 is electrically connected to an ECU 4. This dynamic monitoring system can monitor the lubricating oil level inside the engine in real time, ensuring that the engine operates at the optimal lubricating oil level. It also includes a crankcase connecting pipe 2 and an oil pan connecting pipe 3. One end of the crankcase connecting pipe 2 is deflectedly connected to the crankcase 5, and the other end is deflectedly connected to the first port 7 of the level gauge 1. The oil pan 6 is connected to the second port 8 of the level gauge 1 via the oil pan connecting pipe 3. This ensures that after the engine starts running, the engine lubricating oil level and the lubricating oil level in the level gauge 1 are under the same environmental pressure.

[0028] In this way, bench test operators can monitor the engine lubricating oil status at any time, promptly identify and address potential problems. Specifically, the level gauge 1 next to the engine is connected to the level monitoring system, facilitating remote monitoring (audible and visual alarms + automatic lubricating oil addition upon triggering the lower limit, automatic stopping of lubricating oil addition upon triggering the upper limit, and automatic recording of lubricating oil addition). This enables continuous, uninterrupted bench operation.

[0029] The crankcase connecting pipe 2 includes an inverted U-shaped pipe section 21, a first deflection part 22, and a second deflection part 23. One end of the inverted U-shaped pipe section 21 is fixedly connected to the first deflection part 22, and the other end of the inverted U-shaped pipe section 21 is fixedly connected to the second deflection part 23. The first deflection part 22 is deflectedly connected to the crankcase 5, and the first deflection part 22 and the side wall of the crankcase 5 form a first deflection angle 24. The second deflection part 23 is deflectedly connected to the first port 7 of the level gauge 1, and the second deflection part 23 and the side wall of the level gauge 1 form a second deflection angle 25. The inverted U-shaped pipe section 21, the first deflection part 22, and the second deflection part 23 are an integral structure.

[0030] Both the crankcase connecting pipe 2 and the oil pan connecting pipe 3 are made of stainless steel, which enhances the corrosion resistance and high temperature resistance of the pipes and extends their service life.

[0031] The main advantage of setting up the inverted U-shaped tube section 21 is that it effectively prevents lubricating oil splashing back from the crankcase from affecting the level gauge, thus ensuring data accuracy. This connection method prevents lubricating oil splashed from the crankcase from entering the level gauge, improving the stability and accuracy of the level gauge readings. Improved monitoring accuracy: The inverted U-shaped tube section design effectively prevents lubricating oil splashing back, ensuring the accuracy of the level gauge readings. Enhanced system stability: Extended service life: The use of stainless steel enhances the system's corrosion resistance and high-temperature resistance, extending the system's service life. Real-time monitoring: Through the connection between the industrial control computer and the level gauge, real-time monitoring of the lubricating oil level is achieved, providing strong support for engine maintenance.

[0032] Both the first deflection angle 24 and the second deflection angle 25 are 30°, making the overall structure of the crankcase connecting pipe 2 resemble an inverted parabola. This deflection connection avoids lubricating oil splashing and backflow while also reducing the impact of oil flow impact, ensuring that the level gauge 1 and the crankcase 5 always maintain a uniform environmental pressure, thus improving the stability and reliability of the system.

[0033] The crankcase connecting pipe 2 is externally fitted with a wire mesh. The crankcase connecting pipe 2 is made of a flexible connecting pipe with an externally woven wire mesh, and it has good corrosion resistance, high temperature resistance and mechanical strength.

[0034] The oil pan 6 is connected to the engine oil filler port via a supply pipe 9. A supply oil pump 10 is installed on the supply pipe 9, and the supply oil pump 10 is electrically connected to the ECU 4 via an oil pump controller 11. When the real-time oil level value obtained by the level gauge 1 is lower than the preset oil level value, the level gauge 1 outputs a lower limit alarm signal to the ECU 4. The ECU 4 starts the supply oil pump 10 to input lubricating oil from the engine oil filler port into the oil pan 6 for replenishment. Replenishment stops when the capacity of the oil pan 6 reaches its upper limit. The supply oil pump 10 can automatically record the amount of lubricating oil added according to the calibrated flow parameters.

[0035] The first port 7 and the second port 8 of the level gauge 1 are connected to the oil pan connecting pipe 3 and the crankcase connecting pipe 2, respectively. This ensures that, after the engine starts running, the engine lubricating oil level and the lubricating oil level in the level gauge are at the same ambient pressure. The level gauge 1 is the core sensor of the system, and it is connected to the crankcase 5 via the oil pan connecting pipe 6. This design aims to ensure that, when the engine is running, the engine lubricating oil level and the lubricating oil level in the level gauge 1 remain consistent under the same ambient pressure. This design is crucial for improving the accuracy and reliability of the monitoring.

[0036] Through the above methods, bench test operators can monitor the engine lubricating oil status at any time, promptly identify and address potential problems. Specifically, the level gauge next to the engine is connected to the level monitoring system, facilitating remote monitoring (audible and visual alarms + automatic lubricating oil addition upon triggering the lower limit and automatic cessation of lubricating oil addition upon triggering the upper limit, with automatic recording of lubricating oil addition). This enables continuous, uninterrupted bench operation.

[0037] In summary, the lubricating oil level dynamic monitoring system in this application achieves precise monitoring of the lubricating oil level in a bench engine through carefully designed components and structure, providing crucial assurance for the stable operation of the engine. The application of this system not only improves the efficiency of bench engine durability testing but also reduces maintenance costs, which is of great significance to the development of the modern automotive industry.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A dynamic monitoring system for lubricating oil level in bench durability testing, comprising a level gauge (1), a crankcase connecting pipe (2), and an oil pan connecting pipe (3), wherein the signal output terminal of the level gauge (1) is electrically connected to an ECU (4), characterized in that, One end of the crankcase connecting pipe (2) is deflectedly connected to the crankcase (5), and the other end of the crankcase connecting pipe (2) is deflectedly connected to the first port (7) of the level gauge (1). The crankcase connecting pipe (2) is provided with an inverted U-shaped pipe section (21). The oil pan (6) is connected to the second port (8) of the level gauge (1) through the oil pan connecting pipe (3).

2. The bench durability test lubricating oil level dynamic monitoring system according to claim 1, characterized in that, The crankcase connecting pipe (2) further includes a first deflection part (22) and a second deflection part (23). One end of the inverted U-shaped pipe section (21) is fixedly connected to the first deflection part (22), and the other end of the inverted U-shaped pipe section (21) is fixedly connected to the second deflection part (23). The first deflection part (22) is deflectedly connected to the crankcase (5), and the second deflection part (23) is deflectedly connected to the first port (7) of the level gauge (1).

3. The bench durability test lubricating oil level dynamic monitoring system according to claim 2, characterized in that, The inverted U-shaped pipe section (21), the first deflection part (22), and the second deflection part (23) are an integral structure.

4. The bench durability test lubricating oil level dynamic monitoring system according to claim 2, characterized in that, The first deflection part (22) forms a first deflection angle (24) with the side wall of the crankcase (5), and the second deflection part (23) forms a second deflection angle (25) with the side wall of the level gauge (1).

5. The bench durability test lubricating oil level dynamic monitoring system according to claim 4, characterized in that, The first deflection angle (24) and the second deflection angle (25) are both 20°-40°.

6. The bench durability test lubricating oil level dynamic monitoring system according to claim 5, characterized in that, The first deflection angle (24) and the second deflection angle (25) are both 30°.

7. The bench durability testing lubricating oil level dynamic monitoring system according to claim 1, characterized in that, The crankcase connecting pipe (2) is fitted with a wire mesh.

8. The bench durability test lubricating oil level dynamic monitoring system according to claim 1, characterized in that, The oil pan (6) is connected to the engine lubricating oil filling port through the supply pipe (9). The supply pipe (9) is equipped with a supply oil pump (10), and the supply oil pump (10) is electrically connected to the ECU (4) through the oil pump controller (11).

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