Vehicle brake pollutant detection device

Abstract

The utility model discloses a vehicle brake pollutant detection device which comprises a brake installation shell and a brake, a containing cavity is formed in the brake installation shell, the containing cavity is isolated from the outside, and the brake is installed in the containing cavity. The brake is configured to be capable of starting and braking; an air inlet and an air outlet are formed in the brake mounting shell, and both the air inlet and the air outlet are communicated with the accommodating cavity; the air inlet communicates with an air inlet pipe, and the air outlet communicates with an air outlet pipe. The air inlet pipe is communicated with a blower device, and the air outlet pipe is communicated with a detection device; the blower device is configured to blow air to the air inlet pipe, and the detection device is used for detecting pollutants of gas in the air outlet pipe; the braking behavior of a vehicle in the running process is simulated through the brake in the containing cavity, air flowing is simulated through the blower device, pollutants can be collected and accurately analyzed through the detection device, and therefore accurate evaluation of pollutant emission of the brake is achieved, and great significance is achieved for research on reduction of non-tail-gas emission pollution.

Description

Technical Field

[0001] This utility model relates to the field of vehicle emission pollutant technology, and in particular to a vehicle brake pollutant detection device. Background Technology

[0002] As an indispensable means of transportation in modern society, automobiles emit pollutants that pose a serious challenge to the environment and human health. These pollutants mainly include carbon monoxide, hydrocarbons, nitrogen oxides, particulate matter, sulfur dioxide, and other harmful substances. Among them, particulate matter has diverse sources and is mainly divided into two categories: vehicle exhaust emissions and non-exhaust emissions. Vehicle exhaust emissions are generated when fuel (such as gasoline and diesel) is burned in the engine, producing a large amount of particulate matter. Non-exhaust emissions are generated by factors such as brake wear, tire-road friction, and road dust during vehicle operation, producing fine particulate matter.

[0003] With increasing environmental awareness and increasingly stringent emission regulations, continuous advancements in engine technology and the widespread application of exhaust after-treatment technologies have significantly reduced the particulate matter content in fuel vehicle exhaust emissions. Simultaneously, the rapid development of new energy vehicles has further reduced exhaust particulate matter emissions. However, these measures cannot solve the problem of non-exhaust particulate matter emissions; in fact, with increasing vehicle weight, non-exhaust particulate matter emissions have even increased. Therefore, in preventing and controlling vehicle particulate matter emissions, it is crucial not only to focus on exhaust emissions but also to strengthen the supervision and control of non-exhaust emissions to achieve a comprehensive reduction in vehicle particulate matter emissions. Particulate matter generated by brake wear, in particular, has become a major component of non-exhaust particulate matter emissions, and its content and hazards cannot be ignored.

[0004] Currently, research on brake wear particulate matter emissions mainly employs methods such as disc tribometer testing, road testing, and chassis dynamometers. While disc tribometer testing can simulate the friction process, it is difficult to accurately reflect the particulate matter emission characteristics under actual braking conditions. Although road testing can obtain data that is closer to reality, it is easily affected by other pollution sources, making it difficult to guarantee data collection efficiency and accuracy. While chassis dynamometers have good controllability and repeatability, they still have limitations in accurately controlling and quantitatively measuring brake wear particulate matter emissions. Utility Model Content

[0005] The purpose of this invention is to provide a vehicle brake pollutant detection device to solve the problems in the existing technology of studying brake wear pollutant emissions, such as susceptibility to external interference, difficulty in ensuring data accuracy, and inability to accurately control and quantitatively measure them.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A vehicle brake contaminant detection device, characterized in that it comprises:

[0008] A brake mounting housing and a brake, the brake mounting housing forming a receiving cavity that is isolated from the outside, the brake being mounted within the receiving cavity; the brake is configured to be able to start and stop.

[0009] The brake mounting housing has an air inlet and an air outlet, both of which are connected to the accommodating cavity, and the air inlet and air outlet are located on both sides of the brake.

[0010] An air inlet pipe is connected to the air inlet, and an air outlet pipe is connected to the air outlet.

[0011] A blower is connected to the air intake pipe, and a detection device is connected to the air outlet pipe; the blower is configured to blow air into the air intake pipe, and the detection device is used to detect pollutants in the gas in the air outlet pipe.

[0012] Based on the aforementioned technical means, the braking behavior of a vehicle during driving is simulated by starting and stopping the brake, thereby generating pollutants (particulate matter). At the same time, the containment cavity provides a closed working environment for the brake, ensuring the authenticity, accuracy, and reliability of the test results. By utilizing a blower device in conjunction with the air inlet and outlet, the airflow during vehicle driving is simulated, allowing the pollutants generated by the simulated braking to accumulate in the exhaust pipe with highly controllable concentration. Then, precise analysis is performed by a detection device, thereby achieving an accurate assessment of brake pollutant emissions and providing strong technical support for research on reducing non-exhaust gas emission pollution.

[0013] Furthermore, the detection device is provided with a sampling port, which is connected to the air outlet pipe. The first section of the air outlet pipe between the sampling port and the air outlet is a circular pipe, and the length L1 of the first section is at least six times its inner diameter D1.

[0014] Based on the aforementioned technical means, the detection device is connected to the exhaust pipe through the sampling port, ensuring that the pollutants released during the braking process can smoothly and stably enter the detection device. Furthermore, a circular tube is used as the first section, with a length L1 that is at least six times its inner diameter D1, ensuring the stability of the airflow and facilitating the enrichment of pollutants. This allows the pollutants to fully diffuse and distribute evenly, reducing local concentration deviations during sampling and thus improving sampling accuracy and enrichment efficiency. This provides a reliable guarantee for subsequent high-precision pollutant detection.

[0015] Furthermore, the second pipe segment connected to the air inlet on the air intake pipe is a circular straight pipe, and the length L2 of the second pipe segment is at least twice its inner diameter D2.

[0016] Based on the above technical means, a circular straight pipe is used as the second pipe section, and its length L2 is at least twice its inner diameter D2. This optimizes the airflow introduction path, reduces turbulence and eddies in the air intake pipe, ensures the stability and uniformity of the airflow, and thus guarantees the enrichment effect of pollutants.

[0017] Furthermore, the inner diameter D1 of the first pipe section is equal to the inner diameter D2 of the second pipe section.

[0018] By using the above-mentioned technical means, by making the inner diameter D1 of the pipe equal to the inner diameter D2 of the pipe, the balance and stability of the airflow can be ensured, the efficiency of pollutant enrichment and dispersion can be guaranteed, thereby improving the detection efficiency and accuracy of the detection device.

[0019] Furthermore, both the inner diameter D1 and the inner diameter D2 of the tube are 175 mm to 225 mm.

[0020] Based on the above technical means, the inner diameters D1 and D2 of the pipe are both 175 mm to 225 mm, which can ensure smooth and stable airflow, reduce the accumulation of pollutants, and simplify manufacturing and installation.

[0021] Furthermore, the blower is equipped with an air humidity regulating device.

[0022] Based on the above technical means, an air humidity regulating device is installed on the blower, which can ensure constant and accurate control of air humidity during the testing process. It can also adjust the realism of the simulated environment according to actual needs, thereby improving the accuracy and reliability of the test and reducing errors and uncertainties.

[0023] Furthermore, an air humidity sensor is installed on the air intake pipe.

[0024] Based on the above technical means, the air humidity sensor is used to monitor the humidity level of the air in the intake pipe in real time. The air humidity sensor is connected to the air humidity regulating device for control. The air humidity regulating device adjusts the humidity level of the air in the intake pipe according to the monitoring information of the air humidity sensor, thereby improving the accuracy and reliability of the detection results.

[0025] Furthermore, the blower is also equipped with an air temperature regulating device.

[0026] Based on the above technical means, an air temperature regulating device is installed on the blower, which can ensure the constant and accurate control of the air temperature during the testing process. It can also adjust the realism of the simulated environment according to actual needs, thereby improving the accuracy and reliability of the test and reducing errors and uncertainties.

[0027] Furthermore, an air temperature sensor is installed on the air intake pipe.

[0028] Based on the above technical means, the air temperature sensor is used to monitor the temperature level of the air in the intake pipe in real time. The air temperature sensor is connected to the air temperature regulating device, and the air temperature regulating device adjusts the temperature level of the air in the intake pipe according to the monitoring information of the air temperature sensor, thereby improving the accuracy and reliability of the detection results.

[0029] Furthermore, the blower is a variable flow blower, and a gas flow monitoring element is installed on the outlet pipe.

[0030] Based on the aforementioned technical means, the variable flow blower can adjust the airflow as needed, facilitating the simulation of gas flow and pollutant emission detection under different working conditions. It offers high flexibility. The gas flow monitoring element can monitor the gas flow in the exhaust pipe in real time. The gas flow monitoring element is connected to the variable flow blower control. Based on the monitoring information from the gas flow monitoring element, the variable flow blower can promptly detect and adjust the flow level, thereby avoiding test errors caused by flow changes and improving the accuracy and reliability of the test results.

[0031] The beneficial effects achieved by this utility model are:

[0032] This invention simulates the braking behavior of a vehicle during operation by starting and stopping the brake, thereby generating pollutants (particulate matter). Simultaneously, the containment cavity provides a closed working environment for the brake, ensuring the authenticity, accuracy, and reliability of the test results. Furthermore, by utilizing a blower combined with the air inlet and outlet, it simulates the airflow during vehicle operation, allowing the pollutants generated by the simulated braking to accumulate in the exhaust pipe with highly controllable concentration. Precise analysis is then performed using a detection device, enabling an accurate assessment of brake pollutant emissions and providing strong technical support for research on reducing non-exhaust gas emissions. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0034] Among them, 1-brake mounting housing; 11-accommodating cavity; 12-air inlet; 13-air outlet; 2-brake; 3-air inlet pipe; 31-pipe section two; 4-air outlet pipe; 41-pipe section one; 5-blowing device; 51-air humidity regulating device; 52-air temperature regulating device; 6-detection device; 61-sampling port; 7-air humidity sensor; 8-air temperature sensor; 9-gas flow monitoring element.

[0035] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific embodiments should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0038] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0039] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0040] In embodiments of this application, 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 a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0041] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0042] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0043] In this embodiment, a vehicle brake contaminant detection device, such as... Figure 1 As shown, it includes: a brake mounting housing 1 and a brake 2. The brake mounting housing 1 forms a receiving cavity 11, which is isolated from the outside. The brake 2 is installed in the receiving cavity 11. The brake 2 is configured to start and stop. The brake mounting housing 1 has an air inlet 12 and an air outlet 13, which are both connected to the receiving cavity 11 and are located on both sides of the brake 2. An air inlet pipe 3 is connected to the air inlet 12, and an air outlet pipe 4 is connected to the air outlet 13. A blower device 5 is connected to the air inlet pipe 3, and a detection device 6 is connected to the air outlet pipe 4. The blower device 5 is configured to blow air into the air inlet pipe 3, and the detection device 6 is used to detect contaminants in the gas in the air outlet pipe 4.

[0044] This embodiment simulates the braking behavior of a vehicle during driving by starting and stopping the brake 2, thereby capturing pollutants (instantaneous particulate matter emissions) generated during braking. This improves the comprehensiveness and realism of the detection. Simultaneously, the accommodating cavity 11 provides a closed working environment for the brake 2, effectively isolating it from external environmental interference with the detection of pollutants generated by brake 2 wear. This ensures a clean and controllable detection environment, making the detection results more accurate and reliable. It can precisely reflect the pollutant emission characteristics of the brake 2 in actual use. Furthermore, the blower device 5, in conjunction with distributed air inlets and outlets, simulates the airflow during vehicle operation, ensuring that air flows evenly and efficiently around the brake 2. This concentrates the pollutants released during braking into the exhaust pipe 4, improving the detection accuracy. Efficiency is ensured, facilitating control of the pollutant concentration accumulated in the exhaust pipe 4, enabling subsequent detection device 6 to perform high-precision analysis. In practical applications, the brake 2 simulates braking behavior, while the blower 5 blows air into the intake pipe 3. Driven by the airflow, particulate matter generated during braking is accumulated in the exhaust pipe 4, where it is then detected by the detection device 6. In a preferred embodiment, the blower is a variable-flow blower, adjusting its speed according to specific testing requirements to control the pollutant concentration and adapt to pollutant emission tests under different vehicle models and braking conditions. The detection device utilizes advanced sensing technology or chemical analysis methods to detect pollutants released during braking in real time and accurately, including but not limited to inhalable particulate matter (PM2.5). 10 Fine particulate matter (PM) 2.5 Total particulate matter (TPN10) and solid particulate matter (SPN10);

[0045] Among them, PM 10 (particulate matter with particle size below 10 microns) refers to particulate matter in ambient air with a diameter of 10 micrometers or less;

[0046] PM 2.5 (particulate matter with particle size below 2.5 microns) refers to particulate matter in ambient air with a diameter of 2.5 micrometers or less;

[0047] TPN10 (total particle number) refers to particles with an electromobility diameter greater than or equal to 10 nm that include both solid particles and volatile substances.

[0048] SPN10 (solid particle number) refers to solid particles with an electromobility diameter greater than or equal to 10 nm that have had volatile substances removed.

[0049] In this embodiment, the detection device 6 is provided with a sampling port 61, which is connected to the air outlet pipe 4. The pipe segment 41 between the sampling port 61 and the air outlet 13 on the air outlet pipe 4 is a circular pipe, and the length L1 of the pipe segment 41 is at least six times its inner diameter D1; Figure 1 As shown, the detection device 6 is connected to the exhaust pipe 4 through the sampling port 61, ensuring that the particulate matter released during the braking process can smoothly and stably enter the detection device 6. The circular pipe is used as the pipe section 41, and its length L1 is at least six times its inner diameter D1, which ensures the stability of the airflow and is conducive to the enrichment of particulate matter. This allows the particulate matter to diffuse fully and be evenly distributed, reducing the local concentration deviation of the detection device 6 during sampling, thereby improving the sampling accuracy and enrichment efficiency, and providing a reliable guarantee for subsequent high-precision pollutant detection.

[0050] In this embodiment, the second pipe segment 31 connected to the air inlet 12 on the air intake pipe 3 is a circular straight pipe, and the length L2 of the second pipe segment 31 is at least twice its inner diameter D2; for example Figure 1 As shown, a circular straight pipe is used as pipe segment 31, and its length L2 is at least twice its inner diameter D2. This optimizes the airflow introduction path, reduces turbulence and eddy currents in the air intake pipe 3, and ensures the stability and uniformity of the airflow, thereby guaranteeing the enrichment effect of particulate matter.

[0051] Furthermore, as a preferred embodiment, the inner diameter D1 of pipe segment 41 is equal to the inner diameter D2 of pipe segment 31; by making the inner diameters D1 and D2 equal, the balance and stability of the airflow can be ensured, the efficiency and dispersion effect of particulate matter enrichment can be guaranteed, thereby improving the detection efficiency and accuracy of the detection device 6.

[0052] Furthermore, as a preferred embodiment, both the inner diameter D1 and the inner diameter D2 of the pipe are 175 mm to 225 mm; the inner diameters D1 and D2 being 175 mm to 225 mm can ensure smooth and stable airflow, reduce the accumulation of particulate matter, and simplify manufacturing and installation.

[0053] In this embodiment, the blower 5 is equipped with an air humidity regulating device 51; such as Figure 1 As shown, the air humidity regulating device 51 in this embodiment is used to regulate air humidity. In practical applications, the air humidity regulating device 51 can be used to adjust the realism of the simulated environment according to actual needs, thereby improving the accuracy and reliability of detection and reducing errors and uncertainties.

[0054] In this embodiment, an air humidity sensor 7 is installed on the air intake pipe 3; such as Figure 1As shown, in this embodiment, the air humidity sensor 7 is used to monitor the humidity level of the air in the air intake pipe 3 in real time. In practical applications, the air humidity sensor 7 is connected to the air humidity adjustment device 51. The air humidity adjustment device 51 adjusts the humidity level of the air in the air intake pipe 3 according to the monitoring information of the air humidity sensor 7, thereby improving the accuracy and reliability of the detection results.

[0055] In this embodiment, the blower 5 is also equipped with an air temperature regulating device 52; such as Figure 1 As shown, the temperature and humidity regulating device 52 in this embodiment is used to regulate the air temperature. In practical applications, the temperature and humidity regulating device 52 can be used to adjust the realism of the simulated environment according to actual needs, thereby improving the accuracy and reliability of the detection and reducing errors and uncertainties.

[0056] In this embodiment, an air temperature sensor 8 is installed on the air intake pipe 3; for example Figure 1 As shown, in this embodiment, the air temperature sensor 8 is used to monitor the temperature level of the air in the intake pipe 3 in real time. In practical applications, the air temperature sensor 8 is connected to the air humidity regulating device 51. The air temperature regulating device 52 adjusts the temperature level of the air in the intake pipe 3 according to the monitoring information of the air temperature sensor 8, thereby improving the accuracy and reliability of the detection results.

[0057] In this embodiment, a gas flow monitoring element 9 is installed on the gas outlet pipe 4; such as Figure 1 As shown, the gas flow monitoring element 9 is used to monitor the gas flow in the outlet pipe 4 in real time. In practical applications, the gas flow monitoring element 9 is connected to the control of the variable flow blower. The variable flow blower can detect and adjust the flow level in a timely manner based on the monitoring information of the gas flow monitoring element 9, thereby avoiding test errors caused by flow changes and improving the accuracy and reliability of the test results.

[0058] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A vehicle brake contaminant detection device, characterized in that, include: A brake mounting housing (1) and a brake (2) are provided. The brake mounting housing (1) forms a receiving cavity (11) which is isolated from the outside. The brake (2) is installed in the receiving cavity (11). The brake (2) is configured to be able to start and stop. An air inlet (12) and an air outlet (13) are formed on the brake mounting housing (1). The air inlet (12) and the air outlet (13) are both connected to the accommodating cavity (11), and the air inlet (12) and the air outlet (13) are located on both sides of the brake (2). An air inlet (12) is connected to an air inlet pipe (3), and an air outlet (13) is connected to an air outlet pipe (4). A blower (5) is connected to the air inlet pipe (3), and a detection device (6) is connected to the air outlet pipe (4); the blower (5) is configured to blow air into the air inlet pipe (3), and the detection device (6) is used to detect pollutants in the gas in the air outlet pipe (4).

2. The vehicle brake contaminant detection device according to claim 1, characterized in that, The detection device (6) is provided with a sampling port (61), which is connected to the air outlet pipe (4). The first section (41) between the sampling port (61) and the air outlet (13) on the air outlet pipe (4) is a circular pipe, and the length L1 of the first section (41) is at least six times its inner diameter D1.

3. The vehicle brake contaminant detection device according to claim 2, characterized in that, The second pipe section (31) connected to the air inlet (12) on the air inlet pipe (3) is a circular straight pipe, and the length L2 of the second pipe section (31) is at least twice its inner diameter D2.

4. The vehicle brake contaminant detection device according to claim 3, characterized in that, The inner diameter D1 of the first pipe section (41) is equal to the inner diameter D2 of the second pipe section (31).

5. The vehicle brake contaminant detection device according to claim 4, characterized in that, The inner diameters D1 and D2 of the tube are both 175 mm to 225 mm.

6. The vehicle brake contaminant detection device according to any one of claims 1-5, characterized in that, The blower (5) is equipped with an air humidity regulating device (51).

7. The vehicle brake contaminant detection device according to claim 6, characterized in that, An air humidity sensor (7) is installed on the air intake pipe (3).

8. The vehicle brake contaminant detection device according to any one of claims 1-5, characterized in that, The blower (5) is also equipped with an air temperature regulating device (52).

9. The vehicle brake contaminant detection device according to claim 8, characterized in that, An air temperature sensor (8) is installed on the air intake pipe (3).

10. The vehicle brake contaminant detection device according to claim 1, characterized in that, The blower (5) is a variable flow blower, and a gas flow monitoring element (9) is installed on the outlet pipe (4).

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