High-temperature environment measuring device and measuring method for automobile

Abstract

The invention belongs to the technical field of engine testing, and provides a high-temperature environment measuring device and method for an automobile, and the device comprises a box body, a circulating pump, a liquid inlet pipe, a radiator, a measuring sensor, a temperature sensor, and a liquid outlet pipe. Wherein the box body is filled with cooling liquid, the circulating pump is installed in the box body, an inlet of the liquid inlet pipe is connected with the circulating pump, an outlet is connected to an inlet of the radiator, an outlet of the radiator is connected with the liquid outlet pipe, and the measuring sensor is installed on the surface of the radiator. According to the measuring device, the measuring sensor located on the radiator and the temperature sensor located on the box body are arranged, cooling liquid in the box body can be controlled to enter the radiator for heat exchange through data collected by the two sensors in the working process, and the sensors can be prevented from working in an overheat environment; therefore, the measurement sensor and the temperature sensor can accurately measure data.

Description

Technical Field

[0001] The invention belongs to the technical field of engine testing, and in particular relates to a high temperature environment measuring device and a measuring method for an automobile. Background Art

[0002] When the whole vehicle and the engine test bench are working dynamically, the internal combustion engine generates high temperatures, and the space in the vehicle cabin is small, or some hot surfaces are generated, such as the surface of the turbocharger, the exhaust hot end, the three-way catalytic converter, the muffler surface, and the engine cylinder head. When the whole vehicle is running dynamically, the internal combustion engine generates high temperatures, and the displacement temperature heats the related parts such as the turbocharger, the exhaust hot end, the three-way catalytic converter, and the cylinder head on the exhaust side. Some existing sensors cannot work on high-temperature hot surfaces. For example, when the engine is working at full load, the exhaust temperature is close to 900℃. Sensors cannot be arranged on this hot surface for measurement, and the technical requirements require sensors to collect relevant data at various points, such as amplitude displacement, acceleration, frequency, etc. At present, the tolerance temperature of general sensors is ≤200℃, and they cannot work on these hot surfaces, or they are near the working limit, and the data cannot be accurately measured or the measured data has large deviations. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention provides a high temperature environment measuring device and a measuring method for an automobile.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A high temperature environment measuring device for an automobile, comprising:

[0006] A box body, wherein the coolant is filled;

[0007] A circulation pump, installed in the box;

[0008] A liquid inlet pipe, the inlet of which is connected to the circulation pump, and the outlet of which is connected to the inlet of the radiator;

[0009] The radiator is located outside the box, and the outlet of the radiator is connected to a liquid outlet pipe, and the outlet of the liquid outlet pipe is located inside the box;

[0010] Measuring sensor, mounted on the radiator surface;

[0011] The temperature sensor is installed on the box body and is in contact with the coolant, and is used to measure the temperature of the coolant.

[0012] Preferably, a filling port is provided on the top of the box body, and the filling port is equipped with a first valve.

[0013] Preferably, a liquid level meter is installed on one side of the box.

[0014] Preferably, the temperature sensor is electrically connected to a collection module, and the collection module is located outside the box.

[0015] Preferably, a drain outlet is provided at the bottom of the box body, and the drain outlet is equipped with a second valve.

[0016] Preferably, a connector is provided at the bottom of the radiator, and the radiator is installed on the car through the connector.

[0017] A measuring method, applied to the above-mentioned high temperature environment measuring device for automobiles, comprises the following steps:

[0018] Collect the temperature of radiator and coolant;

[0019] Determine whether the temperature of the radiator is within the target range;

[0020] If the temperature of the radiator is within the target range, continue to collect data, otherwise compare the temperature of the radiator and the coolant;

[0021] If the temperature of the radiator is less than or equal to the temperature of the coolant, then the temperature of the coolant is lowered, or the temperature of the radiator is continuously detected until the temperature of the radiator is greater than the temperature of the coolant;

[0022] If the temperature of the radiator is greater than the temperature of the coolant, the coolant exchanges heat with the radiator to bring the temperature of the radiator into the target range.

[0023] Preferably, collecting the temperature of the radiator and the coolant includes the following steps:

[0024] The temperature of the radiator is collected by measuring the sensor;

[0025] The temperature of the coolant in the box is collected by a temperature sensor.

[0026] Preferably, lowering the coolant temperature comprises the following steps:

[0027] Adding new coolant into the box, wherein the temperature of the new coolant is lower than the coolant in the box;

[0028] Or, drain the coolant in the tank and fill the tank with new coolant.

[0029] Preferably, if the temperature of the radiator is greater than the temperature of the coolant, the temperature of the radiator is brought into a target range by exchanging heat between the coolant and the radiator, which includes the following steps:

[0030] The coolant in the box is transported to the radiator through a circulation pump;

[0031] The radiator temperature is reduced to a target range by exchanging heat between the coolant and the radiator;

[0032] The coolant after heat exchange is returned to the box through the liquid outlet pipe.

[0033] Beneficial effects of the present invention:

[0034] 1. The measuring device of the present invention is provided with a measuring sensor located on the radiator and a temperature sensor located on the box body. When working, the data collected by the two sensors can be used to control the coolant in the box body to enter the heat dissipation for heat exchange, which can prevent the sensor from working in an overheated environment, thereby enabling the measuring sensor and the temperature sensor to accurately measure data;

[0035] 2. The method of the present invention can realize real-time monitoring and control of the temperature of the radiator and coolant in the high-temperature environment measuring device of the whole vehicle and the test bench, ensure that the temperature of the radiator is within the target range, and improve the stability and reliability of the measuring device.

[0036] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 A schematic structural diagram of a high temperature environment measuring device for an automobile according to the present invention is shown;

[0039] Figure 2 A flow chart of a measuring method of the present invention is shown.

[0040] In the figure: 1. Box body; 2. Circulation pump; 3. Liquid inlet pipe; 4. Radiator; 5. Measuring sensor; 6. Connector; 7. Filling port; 8. First valve; 9. Liquid level meter; 10. Temperature sensor; 11. Collection module; 12. Sealing ring; 13. Plug; 14. Second valve; 15. Liquid outlet pipe. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figure 1 As shown, a high temperature environment measuring device for automobiles is provided, which mainly includes a housing 1, a circulation pump 2, a liquid inlet pipe 3, a radiator 4, a measuring sensor 5, a temperature sensor 10 and a liquid outlet pipe 15. The housing 1 is filled with coolant, and the circulation pump 2 is installed in the housing 1. The inlet of the liquid inlet pipe 3 is connected to the circulation pump 2, and the outlet is connected to the inlet of the radiator 4, which is located outside the housing 1. The outlet of the radiator 4 is connected to the liquid outlet pipe 15, and the outlet of the liquid outlet pipe 15 is located in the housing 1. The measuring sensor 5 is installed on the surface of the radiator 4, and can measure the temperature of the radiator 4; the temperature sensor 10 is installed on the housing 1, and one end of the temperature sensor 10 is in contact with the coolant, and can measure the temperature of the coolant.

[0043] It should be noted that the circulation pump 2 is also equipped with a plug 13 , and the plug 13 can be connected to a power supply device outside the box 1 .

[0044] It should be further explained that the above device solves the possibility of collecting data with ordinary sensors on the hot surface of vehicle parts. The device is flexible and can be used for the layout of small spaces in the cabin of different models and the needs of vehicle dynamic testing.

[0045] In addition, a filling port 7 is provided on the top of the housing 1, which not only facilitates the addition of coolant, but is also equipped with a first valve 8, which is preferably a ball valve, to ensure flexible control and sealing of the filling process. Through the filling port 7, the operator can easily inject the coolant into the housing 1 to meet the equipment's demand for coolant. A drain port is provided on the bottom side of the housing 1, which is also equipped with a second valve 14, which is also preferably a ball valve, so as to quickly and effectively discharge the coolant in the housing 1 when needed. Such a design not only facilitates the maintenance of the equipment, but also improves the efficiency of replacing the coolant.

[0046] It should be noted that the filling port 7 can be set as a pipe, and a sealing ring 12 can be installed at the connection between the pipe and the box body 1. Similarly, a sealing ring 12 can be installed at the connection between the liquid inlet pipe 3 and the box body 1 and at the connection between the liquid outlet pipe 15 and the box body 1.

[0047] In addition, in order to monitor the liquid level of the coolant in the box 1 in real time, a liquid level gauge 9 can be installed on one side of the box 1. Through the clear display of the liquid level gauge 9, the operator can intuitively understand the amount of coolant in the box 1, thereby ensuring the normal operation and cooling effect of the equipment. This design not only improves the reliability of the equipment, but also provides great convenience for the operator's monitoring and maintenance work.

[0048] In addition, the temperature sensor 10 is electrically connected to a collection module 11, and the collection module 11 is located outside the housing 1. Specifically, the temperature sensor 10 is electrically connected to the collection module 11 through wires or wireless signals. The collection module 11 is designed and installed outside the housing 1 to ensure that it can stably receive data from the temperature sensor 10. The main responsibility of the collection module 11 is to collect and preliminarily process the temperature data, and then send the data to the central control system or data recording device through a specific transmission method, such as a wired connection or a wireless network. Such a design not only improves the flexibility and scalability of the system, but also ensures the accuracy and real-time nature of the temperature data, providing a reliable basis for subsequent monitoring and analysis.

[0049] In addition, a connector 6 is provided at the bottom of the radiator 4, and the radiator 4 is mounted on the heating device of the car through the connector 6. The connector 6 not only fixes the radiator 4, but also ensures the close fit between the radiator 4 and the heating device, thereby optimizing the heat conduction and dissipation efficiency, and effectively improving the heat dissipation performance of the car. This design not only enhances the stability of the radiator 4, but also further improves the overall operating efficiency and safety of the car.

[0050] It should be noted that in order to solve the problem of arranging sensors on the hot surface of the vehicle to collect various signals, Figure 1The cooling device is attached to the surface of the measured object. It has a small volume and mass and does not affect the mode of the overall structure of the measured object. The sensor can be directly attached to the working surface with heat-resistant glue and is easy to arrange. The inlet pipe 3 and the outlet pipe 15 can use 8mm Teflon tube (tetrafluoroethylene), which is convenient to change the direction according to the layout of the whole vehicle. The material can withstand a certain high temperature and is not afraid of acid and alkali environment. The whole system is divided into two parts, inside and outside the car. When working, the coolant circulates to take away the hot working surface temperature. The personnel in the car can monitor the coolant temperature in the box in real time, so that new coolant can be added at any time to cool down. Realize dynamic long-term work. The pipeline (inlet pipe 3 and outlet pipe 15, etc.) can be set up according to the layout of the car cabin, and can be connected to various quick plugs, elbows, etc. When working, the box 1 is placed in the cockpit. The box 1 is designed with a built-in 12V DC variable frequency pump, and multiple gears are designed to provide different cooling flows. The built-in thermal resistor (temperature sensor 10) inside the box 1 is connected to the external acquisition module 11 for real-time temperature monitoring. During the dynamic test of the whole vehicle, low-temperature coolant can be added according to temperature feedback, and high-temperature coolant can be released for temperature control. The liquid level meter 9 can be used to keep the coolant in the box 1 within a reasonable range.

[0051] like Figure 2 As shown, a measurement method is applied to the above-mentioned high temperature environment measurement device for automobiles, comprising the following steps:

[0052] S1: Collect the temperature of the radiator 4 and the coolant, including:

[0053] S101: collecting the temperature of the radiator 4 by measuring the sensor 5;

[0054] S102 : The temperature of the coolant in the box 1 is collected by the temperature sensor 10 .

[0055] S2: Determine whether the temperature of the radiator 4 is within the target range.

[0056] S3: If the temperature of the radiator 4 is within the target range, continue to collect data, otherwise compare the temperatures of the radiator 4 and the coolant;

[0057] S4: If the temperature of the radiator 4 is less than or equal to the temperature of the coolant, then lower the temperature of the coolant, or continue to detect the temperature of the radiator 4 until the temperature of the radiator 4 is greater than the temperature of the coolant. Lowering the temperature of the coolant includes the following steps:

[0058] S401: Add new coolant into the box 1, the temperature of the new coolant is lower than the coolant in the box 1; or, drain the coolant in the box 1 and add new coolant to the box 1.

[0059] S5: If the temperature of the radiator 4 is greater than the temperature of the coolant, the coolant exchanges heat with the radiator 4 to bring the temperature of the radiator 4 within the target range. Specifically, the following steps are included:

[0060] S501: The coolant in the box 1 is transported to the radiator 4 through the circulation pump 2;

[0061] S502: exchanging heat between the coolant and the radiator 4 to reduce the temperature of the radiator 4 to a target range;

[0062] S503: The coolant after heat exchange is returned to the box 1 through the liquid outlet pipe 15.

[0063] It should be noted that, in combination with the above S1-S5, taking a certain model of automobile engine as an example, the normal operating temperature range of the radiator 4 is set to 70°C to 95°C. In one measurement, the temperature of the radiator 4 collected by the measuring sensor 5 is 98°C, which is higher than the upper limit of the target range; and the temperature of the coolant in the box collected by the temperature sensor 10 is 85°C.

[0064] Next, the collected temperature data of the radiator 4 is judged to determine whether it is within the preset target range. In this example, the temperature of radiator 4, 98°C, is not within the target range of 70°C to 95°C, so subsequent operations are required. If the temperature of radiator 4 is not within the target range, the temperature data of radiator 4 and coolant are compared. In this example, the temperature of radiator 4, 98°C, is greater than the coolant temperature, 85°C, indicating that the radiator 4 has a good heat dissipation effect but the temperature is too high, and further heat exchange between the coolant and radiator 4 is required to reduce the temperature of radiator 4 to within the target range.

[0065] Specifically, the circulation pump 2 is started to transport the coolant in the box 1 to the radiator 4 through the pipeline. In the radiator 4, the coolant exchanges heat with the radiator 4, takes away the heat in the radiator 4, and reduces the temperature of the radiator 4. Assume that after the heat exchange, the temperature of the radiator 4 is reduced to 88°C, which is still within the target range, and the temperature of the coolant after the heat exchange is increased to 90°C, but is still lower than the original temperature of the radiator 4. The coolant after the heat exchange flows back to the box 1 through the liquid outlet pipe 15 and continues to participate in the circulation.

[0066] In addition, if the temperature of the radiator 4 is less than or equal to the coolant temperature in a certain measurement, for example, the temperature of the radiator 4 is 80°C, while the temperature of the coolant is 85°C, it means that the heat dissipation effect of the radiator 4 is not good. At this time, measures can be taken to reduce the coolant temperature, such as adding new coolant with a temperature lower than 85°C to the box 1, or draining the coolant in the box 1 and adding new coolant to reduce the coolant temperature. In this process, the temperature of the radiator 4 is continuously detected until the temperature of the radiator 4 is greater than the coolant temperature, and then the heat exchange operation is performed according to the above steps.

[0067] Through the above implementation steps, real-time monitoring and control of the temperature of the radiator 4 and the coolant in the high-temperature environment measuring device of the whole vehicle and the test bench can be achieved, ensuring that the temperature of the radiator 4 is within the target range, and improving the stability and reliability of the measuring device.

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high temperature environment measuring device for an automobile, characterized in that: include: A box (1) filled with coolant; A circulation pump (2) is installed in the box (1); A liquid inlet pipe (3), the inlet of which is connected to the circulation pump (2), and the outlet of which is connected to the inlet of the radiator (4); The radiator (4) is located outside the box (1), and the outlet of the radiator (4) is connected to a liquid outlet pipe (15), and the outlet of the liquid outlet pipe (15) is located inside the box (1); A measuring sensor (5) is mounted on the surface of the radiator (4); The temperature sensor (10) is mounted on the box (1) and is in contact with the coolant, and is used to measure the temperature of the coolant.

2. A high temperature environment measuring device for automobiles according to claim 1, characterized in that: The top of the box body (1) is provided with a filling port (7), and the filling port (7) is equipped with a first valve (8).

3. A high temperature environment measuring device for automobiles according to claim 1, characterized in that: A liquid level meter (9) is installed on one side of the box body (1).

4. A high temperature environment measuring device for automobiles according to claim 1, characterized in that: The temperature sensor (10) is electrically connected to a collection module (11), and the collection module (11) is located outside the box (1).

5. A high temperature environment measuring device for automobiles according to claim 1, characterized in that: The bottom of the box body (1) is provided with a drain outlet, and the drain outlet is equipped with a second valve (14).

6. A high temperature environment measuring device for automobiles according to claim 1, characterized in that: A connecting piece (6) is provided at the bottom of the radiator (4), and the radiator (4) is installed on the car via the connecting piece (6).

7. A measurement method, characterized in that: A high temperature environment measuring device for a vehicle as claimed in any one of claims 1 to 6 comprises the following steps: Collecting the temperature of the radiator (4) and the coolant; determining whether the temperature of the radiator (4) is within a target range; If the temperature of the radiator (4) is within the target range, the data collection continues, otherwise the temperature of the radiator (4) and the coolant are compared; If the temperature of the radiator (4) is less than or equal to the temperature of the coolant, the temperature of the coolant is lowered, or the temperature of the radiator (4) is continuously detected until the temperature of the radiator (4) is greater than the temperature of the coolant; If the temperature of the radiator (4) is greater than the temperature of the coolant, the temperature of the radiator (4) is brought into a target range through heat exchange between the coolant and the radiator (4).

8. A measuring method according to claim 7, characterized in that: Collecting the temperature of the radiator (4) and the coolant comprises the following steps: Collecting the temperature of the radiator (4) by means of a measuring sensor (5); The temperature of the coolant in the box (1) is collected by a temperature sensor (10).

9. A measuring method according to claim 7, characterized in that: Lower the coolant temperature, including the following steps: Adding new coolant into the box (1), wherein the temperature of the new coolant is lower than the temperature of the coolant in the box (1); Alternatively, drain the coolant in the box (1) and add new coolant into the box (1).

10. A measuring method according to claim 7, characterized in that: If the temperature of the radiator (4) is greater than the temperature of the coolant, heat is exchanged between the coolant and the radiator (4) so ​​that the temperature of the radiator (4) is within a target range, comprising the following steps: The coolant in the box (1) is transported to the radiator (4) by means of a circulation pump (2); The temperature of the radiator (4) is reduced to a target range by exchanging heat between the coolant and the radiator (4); The cooling liquid after heat exchange flows back to the box (1) through the liquid outlet pipe (15).

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