Tire wear particulate matter trapping device of motor vehicle

Abstract

The invention provides a tire wear particulate matter collecting device of a motor vehicle, which comprises a rectifying apron board connected to a vehicle body, and the rectifying apron board at least comprises a first apron board positioned on the outer side of a rear wheel; the first trapping shell comprises a first shell body which extends in the length direction of the vehicle body and is relatively closed, the two sides of the first shell body are each provided with an air inlet cavity channel which protrudes outwards and communicates with the area between the two adjacent rear wheels at the corresponding position, and the rear end of the first shell body is provided with a first exhaust port. A first particle adsorption mechanism is arranged on the first shell body close to the first exhaust port; the second trapping shell comprises a relatively-closed second shell body extending in the length direction of the vehicle body, the front side of the second shell body is provided with an air inlet communicating to the rear area of the rear wheel at the rearmost end, the rear end of the second shell body is provided with a second exhaust port, and a second particle adsorption mechanism is arranged at the position, close to the second exhaust port, of the second shell body. According to the trapping device provided by the invention, the trapping effect on the tire wear particles is good.

Description

Technical Field

[0001] The present invention relates to the technical field of tire wear particle capture, and in particular to a tire wear particle capture device for a motor vehicle. Background Art

[0002] With the rapid development of the new energy vehicle industry and increasingly stringent national regulations on vehicle exhaust emissions, vehicles have begun to gradually achieve "zero tailpipe" or "low tailpipe" emissions. However, in addition to tailpipe emissions, "non-tailpipe" tire wear particulate matter emissions from vehicles are also a significant source of air pollution and have been receiving widespread attention. The EU Stage VII vehicle emission standards for the first time include air pollution caused by tire wear particulate matter as an emission standard. Statistics show that tire wear particulate matter and its derivatives not only harm the atmospheric environment but also pose serious risks to biological health, soil pollution, and marine ecosystems.

[0003] Wear particles from vehicle tires and their derivatives are separated from the tread, detached from the interface, and subjected to multiple airflow fields before being released into the atmosphere, remaining with the tire throughout its service life. Simulation experiments show that after being ejected from the rear side of the grounded tire, tire wear particles strike the wheel cover with the airflow and then escape from the outside of the wheel cover, where wear particles accumulate. Therefore, if tire wear particles that have escaped the ground interface can be captured (aggregated and captured) immediately, minimizing their release into the atmosphere, this will be of great significance in reducing secondary pollution caused by tire wear and will have a significant positive impact on improving environmental quality and the ecological environment.

[0004] Truck tires, particularly heavy-duty container trucks and trailers, suffer the most from tire wear. According to the latest statistics, my country's truck fleet has reached 13,950,420 vehicles. Truck tires wear out faster due to their long driving times and heavy loads. It's estimated that truck tires are typically replaced every 18 months (or 150,000 kilometers), and each tire wears approximately 1.73 kg. Even if only 10% of this wear is converted into wear particles, the environmental and ecological pollution would be significant.

[0005] Therefore, a tire wear particle capture device for a motor vehicle is needed to at least partially solve the above technical problems. Summary of the Invention

[0006] An embodiment of the present invention provides a tire wear particle capture device for a motor vehicle, which captures particles along the diffusion trajectory of tire wear particles, allowing the particles to enter the capture device for capture and adsorption to the greatest extent possible, thereby reducing the amount of harmful tire wear particles entering the air and reducing pollution to the environment.

[0007] The present invention provides a tire wear particle collection device for a motor vehicle, the motor vehicle comprising a vehicle body, and at least one pair of front wheels and at least two pairs of rear wheels respectively provided to the front and rear of the vehicle body, the collection device comprising:

[0008] fairing skirts connected to the vehicle body, the fairing skirts including at least a first skirt located outboard of the at least one pair of rear wheels;

[0009] a first collecting housing provided below the vehicle body and between the rear wheels on both sides of the vehicle body, the first collecting housing including a relatively closed first shell body extending along the length direction of the vehicle body, air intake ducts protruding outwardly and connected to the area between two adjacent rear wheels at corresponding positions are provided on both sides of the first shell body, a first exhaust port is provided at the rear end of the first shell body, and a first particle adsorption mechanism is provided on the first shell body near the first exhaust port; and

[0010] A second collection shell is arranged below the vehicle body, on the inner side of the first skirt panel on the corresponding side and behind the rearmost rear wheel on the corresponding side. The second collection shell includes a relatively closed second shell body extending along the length direction of the vehicle body. The front side of the second shell body is provided with an air intake connected to the rear area of ​​the rearmost rear wheel, the rear end of the second shell body is provided with a second exhaust port, and the second shell body is provided with a second particle adsorption mechanism near the second exhaust port.

[0011] According to the capture device of the present invention, the interior of the first capture shell has a first capture channel connecting the air intake duct and the first exhaust port, which extends horizontally along the length direction of the vehicle body (front-rear direction). During the driving of the vehicle, the airflow carries tire wear particles into the first capture channel, and flows out from the first exhaust port after being adsorbed by the first particle adsorption mechanism. At the same time, the interior of the second capture shell has a second capture channel connecting the air intake port and the second exhaust port, which extends horizontally along the length direction of the vehicle body. During the driving of the vehicle, the rear wheel wear particles at the rear end carried by the airflow enter the second capture channel, and flow out from the second exhaust port after being adsorbed by the second particle adsorption mechanism. Moreover, due to the provision of the first skirt panel located on the outer side of the rear wheel, the first skirt panel can form a larger pressure difference at the air intake duct, which is conducive to the particles following the airflow into the first capture channel, thereby further improving the capture efficiency.

[0012] Optionally, the fairing skirt further includes:

[0013] a second skirt panel connected to the first skirt panel on the corresponding side, the second skirt panel being configured to be positioned behind the rearmost front wheel and in front of the forwardmost rear wheel;

[0014] The left and right sides of the front wind deflectors are respectively connected to the second skirt panels on the corresponding sides, and the front wind deflectors are configured to be recessed rearward with the top edge located in front of the bottom edge.

[0015] Optionally, the capture device further comprises a supporting skirt plate provided below the first capture shell and between the rear wheels, and the first capture shell is fixed to a top surface of the supporting skirt plate.

[0016] Optionally, an upwardly inclined tail wing plate is further provided at the rear end of the supporting skirt plate, and the angle between the tail wing plate and the supporting skirt plate is 130-140°. And / or

[0017] The fairing skirt further includes a lower wind shield plate connected to the bottom edges of the front wind shield plate and the second skirt plate respectively, and the front end of the supporting skirt plate is also connected to the lower wind shield plate.

[0018] Optionally, the capture device further comprises at least one vertical fixing frame located on the outside of the supporting skirt, wherein the inner upper portion of the fixing frame is provided with a connecting seat connected to the vehicle body, and the inner lower portion of the fixing frame is provided with a first fixing plate connected to the supporting skirt.

[0019] Optionally, a second fixing plate connected to the second capturing shell is further provided at a lower outer portion of the fixing frame of the at least one vertical fixing frame located at the second capturing shell.

[0020] Optionally, an inwardly recessed groove is further provided at the rear end of the first skirt plate, and the angle between the bottom surface of the groove and the first skirt plate is 0-10°.

[0021] Optionally, an upwardly recessed cavity extending in the width direction of the vehicle body is further provided on the inner wall of the top plate of the second shell body near the air inlet.

[0022] Optionally, the cavity is constructed as a right-angled triangle cavity, and the angle between the front side wall of the cavity and the top plate surface of the second shell body is 40-60°.

[0023] Optionally, the first particle adsorption mechanism and / or the second particle adsorption mechanism are detachably plugged into the corresponding first shell body and / or the second shell body, and the first shell body and / or the second shell body have corresponding mounting slots extending along the width direction of the vehicle body.

[0024] Additional advantages, objects, and features of the present invention will be set forth in part in the following description and will become apparent to those skilled in the art upon examination of the following or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained by the structures particularly pointed out in the description and drawings.

[0025] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to the above specific descriptions, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are intended to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are merely for the purpose of illustrating the principles of the present invention. To facilitate the illustration and description of certain portions of the present invention, corresponding portions in the drawings may be exaggerated, that is, may be larger than other components in an exemplary device actually manufactured according to the present invention. In the drawings:

[0027] Figure 1 is a schematic diagram of the relative position of a capture device on a motor vehicle according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 Another angle diagram of the structure shown;

[0029] Figure 3 is another schematic diagram of the relative position of a capture device on a motor vehicle according to an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of the relative positions between the first capture shell and the rear wheel in the capture device according to one embodiment of the present invention;

[0031] Figure 5 Schematic diagram of the relative positions of the first capturing shell, the supporting skirt and the fixing frame in the capturing device according to one embodiment of the present invention;

[0032] Figure 6 for Figure 5 Another angle diagram of the structure shown;

[0033] Figure 7 Schematic diagram of the relative positions of the second capture shell, the tail wing plate and the fixing frame in the capture device according to one embodiment of the present invention;

[0034] Figure 8 Schematic diagram of the internal structure of the second capturing shell in the capturing device according to one embodiment of the present invention;

[0035] Figure 9 Schematic diagram of the structure of the rectifying skirt plate in the capture device according to one embodiment of the present invention;

[0036] Figure 10 The figure is a schematic diagram of three-dimensional streamlines near the wheels of multiple pairs of rear wheels of a motor vehicle before and after the fairing skirts in the capture device according to one embodiment of the present invention are provided; wherein, Figure 10 (a) is a schematic diagram of the three-dimensional streamlines near the rear wheel before the fairing skirt is installed. Figure 10 (b) is a schematic diagram of the three-dimensional streamlines near the rear wheel after the fairing skirt is installed;

[0037] Figure 11 is a graph showing the total capture rate of tire wear particles by the first capture shell in the capture device according to one embodiment of the present invention at different vehicle speeds;

[0038] Figure 12 The figure is a curve diagram of the total capture rate of tire wear particles by the second capture shell in the capture device according to one embodiment of the present invention at different vehicle speeds.

[0039] Description of reference numerals:

[0040] 100. Capture device;

[0041] 110, fairing skirt; 111, first skirt; 112, second skirt; 113, front windshield; 114, lower windshield; 115, groove; 116, first connecting plate;

[0042] 120, first collecting shell; 121, first shell body; 122, air inlet channel; 123, first exhaust port;

[0043] 130, second collecting shell; 131, second shell body; 132, air inlet; 133, second exhaust port; 134, concave cavity; 135, second connecting plate;

[0044] 140, load-bearing skirt plate; 141, tail wing plate; 142, third connecting plate;

[0045] 150, fixing frame; 151, connecting seat; 152, first fixing plate; 153, second fixing plate;

[0046] 160, installation slot;

[0047] 210. Vehicle body; 211. Front wheel; 212. Front wheel cover; 213. Rear wheel; 214. Rear wheel cover; 215. Vehicle body cross member; 216. Axle; 217. Anti-collision frame. DETAILED DESCRIPTION

[0048] The objects and functions of the present invention, as well as methods for achieving these objects and functions, will be clarified with reference to exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is merely to help those skilled in the relevant art to comprehensively understand the specific details of the present invention.

[0049] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0050] The ordinal numbers such as "first" and "second" used in the present application are merely identifiers instead of any other meaning, for example, a specific order, etc. Also, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0051] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and similar expressions used herein are for illustrative purposes only and are not limiting.

[0052] The present application provides a tire wear particle capturing device 100 of a motor vehicle. The capturing device 100 can be applied to the field of tire wear particle capturing technology, for example, for capturing tire wear particles of a motor vehicle, and can solve the problem that existing tire wear particles of a motor vehicle are not well captured.

[0053] First of all, it should be noted that the motor vehicle in the present application can not be limited to a specific type, for example, it can be a car, a trolley, a tractor, a wheeled special mechanical vehicle, a trailer, etc. The motor vehicle includes a vehicle body, and at least one pair of front wheels and at least two pairs of rear wheels arranged to the front and rear of the vehicle body, respectively. That is, along the width direction of the vehicle body, each side (left side, right side) of the rear of the vehicle body is provided with at least two pairs of rear wheels arranged in the front-rear direction, preferably with multiple pairs of rear wheels arranged closely in position. Each pair of rear wheels can include one rear wheel, two rear wheels or other reasonable number. For ease of description, the motor vehicle in the present embodiment is described by taking a container freight truck trailer as an example, but this does not mean limitation. Among them, regarding the at least one pair of front wheels and the at least two pairs of rear wheels, taking the trailer as an example, the front part of the trailer in the figure includes two pairs of front wheels, and the rear part of the trailer includes three pairs of rear wheels, which is only an example, and the specific number of front and rear wheels can not be limited. In addition, along the length direction of the vehicle body, the end close to the vehicle head is the front, and the end close to the vehicle tail is the rear.

[0054] The present application provides a tire wear particle capturing device 100 of a motor vehicle. In a preferred embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 , Figure 4 、 Figure 5 and Figure 6 As shown, Figure 1 is a schematic diagram of the relative position of a capture device on a motor vehicle according to an embodiment of the present invention; Figure 2 for Figure 1 Another angle diagram of the structure shown; Figure 3 is another schematic diagram of the relative position of a capture device on a motor vehicle according to an embodiment of the present invention; Figure 4 Schematic diagram of the relative positions between the first capture shell and the rear wheel in the capture device according to one embodiment of the present invention; Figure 5 Schematic diagram of the relative positions of the first capturing shell, the supporting skirt and the fixing frame in the capturing device according to one embodiment of the present invention; Figure 6 for Figure 5 The capturing device 100 may include a fairing skirt 110 , a first capturing shell 120 and a second capturing shell 130 .

[0055] The fairing skirt 110 is used to prevent wear particles generated by the rear wheels 213 from spreading outward from the vehicle body 210. The first capture housing 120 is used to capture wear particles from all rear wheels 213 except the rearmost rear wheel 213. The second capture housing 130 is used to capture wear particles from the rearmost rear wheel 213.

[0056] Specifically, refer to Figure 1 and Figure 2 , connected to the fairing skirt 110 of the vehicle body 210. The fairing skirt 110 may include a first skirt 111 located outside of at least two pairs of rear wheels 213. The first skirt 111 may be a vertical plate extending along the length of the vehicle body 210, and its rear end may extend to the front of the crash bar 217 of the vehicle body 210. For example, in the case where the rear portion of the trailer includes three pairs of rear wheels 213, the first skirt 111 on each side is located outside of all rear wheels 213 on the corresponding side.

[0057] Furthermore, the fairing skirt 110 may further include a second skirt 112 and a front wind shield 113 .

[0058] Among them, reference Figure 9 , connected to the second skirt panel 112 of the first skirt panel 111 on the corresponding side. The second skirt panel 112 is configured to be positioned behind the rearmost front wheel 211 and in front of the frontmost rear wheel 213. For example, there is a certain distance between the second skirt panel 112 and the front wheel housing 212 of the rearmost front wheel 211. The second skirt panel 112 can be positioned in the same direction as the first skirt panel 111, and both can be vertical panels extending along the length of the vehicle body 210.

[0059] Front windshields 113 are connected to the second skirt panels 112 on the left and right sides, respectively. These are curved, rearward-concave panels with their top edges positioned forward of their bottom edges. Once connected to the vehicle body 210, the tops of these panels 113 seal against the wind, preventing it from passing through and directing longitudinal airflow toward the underside of the vehicle, reducing frontal drag.

[0060] By providing the second skirt 112 and the front windshield 113 , the airflow position is lowered, so that the airflow at the bottom of the vehicle body 210 is smoother during the vehicle driving, further improving the capture efficiency.

[0061] refer to Figure 3 、 Figure 5 and Figure 6 , is provided below the vehicle body 210 and between the rear wheels 213 on both sides of the vehicle body. Specifically, the first capture housing 120 can be located below the axle 216 between the rear wheels 213 on both sides. The first capture housing 120 includes a relatively closed first shell body 121 extending along the length direction of the vehicle body 210. The first shell body 121 can be an elongated structure as a whole. The interior of the first shell body 121 has a first capture channel extending along the length direction of the vehicle body 210. Reference Figure 4 , air intake ducts 122 that protrude outward and connect to the area between two adjacent rear wheels 213 at corresponding positions are respectively provided along both sides of the first shell body 121. Continuing with the example that the rear part of the trailer includes three pairs of rear wheels 213, each side of the first shell body 121 has two air intake ducts 122. If the rear part of the trailer includes four pairs of rear wheels 213, each side of the first shell body 121 has three air intake ducts 122. The number of air intake ducts 122 on each side of the first shell body 121 matches the number of rear wheels 213. The air intake duct 122 can be an arc-shaped duct that bends forward, and the end of the air intake duct 122 close to the rear wheel 213 (or the outer side) is located further forward than the end away from the rear wheel 213, so that the air flow can enter the interior of the first shell body 121 more smoothly. Reference Figure 4 Along the width of the vehicle body, there is a certain distance between the inlet end of the air intake channel 122 and the rear wheel on the corresponding side. A first exhaust port 123 is provided at the rear end of the first shell body 121. The first shell body 121 is provided with a first particle adsorption mechanism near the first exhaust port 123.

[0062] refer to Figure 3 、 Figure 7 and Figure 8, a second collection shell 130 is provided below the vehicle body 210, on the inner side of the first skirt 111 of the corresponding side, and behind the rearmost rear wheel 213 of the corresponding side. For example, the second collection shell 130 can be located behind the rearmost rear wheel 213 and in front of the anti-collision frame 217. The second collection shell 130 includes a relatively closed second shell body 131 extending along the length direction of the vehicle body 210. The second shell body 131 can be a long strip structure as a whole. The interior of the second shell body 131 has a second collection channel extending along the length direction of the vehicle body 210. The front side of the second shell body 131 is provided with an air intake 132 connected to the rear area of ​​the rearmost rear wheel 213. The rear end of the second shell body 131 is provided with a second exhaust port 133. The second shell body 131 is provided with a second particle adsorption mechanism near the second exhaust port 133.

[0063] Based on the above technical solution, when the capture device 100 of the present invention is used, the interior of the first capture shell 120 has a first capture channel that extends horizontally along the length direction (front-rear direction) of the vehicle body 210 and connects all the air intake ducts 122 and the first exhaust port 123. During the driving process of the vehicle, the air flow carries tire wear particles into the first capture channel, and after being adsorbed by the first particle adsorption mechanism, it flows out from the first exhaust port 123. At the same time, the interior of the second capture shell 130 has a first capture channel that extends horizontally along the length direction of the vehicle body 210 and connects all the air intake ducts 122 and the first exhaust port 123. The second collection channel of the second exhaust port 133 collects the wear particles of the rear wheel 213 at the rear end carried by the airflow during the driving of the vehicle, and flows out from the second exhaust port 133 after being adsorbed by the second particle adsorption mechanism; and, since the first skirt 111 is provided on the outer side of the rear wheel 213, it can prevent the wear particles of the rear wheel 213 from spreading to the outside of the vehicle body 210, and can also form a larger pressure difference at the air intake cavity 122, which is conducive to the particles following the airflow into the first collection channel, and further improves the collection efficiency.

[0064] According to the capture device 100 of the present invention, particles are captured along the diffusion trajectory of tire wear particles, so that particles enter the capture device 100 to the greatest extent for capture and adsorption, thereby reducing the entry of harmful tire wear particles into the air and reducing pollution to the environment; at the same time, road dust particles can also be captured to reduce dust pollution.

[0065] Continue to refer Figure 5 and Figure 6 The capture device 100 may further include a supporting skirt 140 disposed below the first capture housing 120 and between the two rear wheels 213. The first capture housing 120 may be fixed to the top surface of the supporting skirt 140 to achieve installation and fixation of the first capture housing 120.

[0066] In the illustrated embodiment, an upwardly inclined tail wing panel 141 may also be provided at the rear end of the supporting skirt panel 140. A plurality of straightening grooves may also be provided on the back of the tail wing panel 141. In the above-described improved structure, the upwardly folded tail wing panel 141 allows for smoother airflow near the rear of the vehicle body 210 during vehicle operation, preventing vortexes. The angle between the tail wing panel 141 and the supporting skirt panel 140 is 130-140°, preferably 135°. When the vehicle is in motion, the airflow near the rear of the vehicle body 210 is smoother, preventing vortexes.

[0067] To facilitate installation and fixation of the support skirt 140, the capture device 100 may further include at least one vertical fixing bracket 150 located on the outer side of the support skirt 140. For example, one, two, or another suitable number of fixing brackets 150 may be provided on each outer side of the support skirt 140. A connecting seat 151 may be provided on the inner upper portion of each fixing bracket 150 for connection to the vehicle body 210. For example, the connecting seat 151 may be bolted to the vehicle body cross member 215. A horizontal first fixing plate 152 may be provided on the inner lower portion of each fixing bracket 150 for connection to the support skirt 140. The first fixing plate 152 may be screwed to the bottom of the support skirt 140.

[0068] refer to Figure 5 In order to further strengthen the installation and fixation of the supporting skirt 140, the fairing skirt 110 may also include a lower wind shield 114 connected to the bottom edge of the front wind shield 113 and the second skirt 112 respectively. The front end of the supporting skirt 140 may also be connected to the lower wind shield 114 through a horizontal third fixing plate. The supporting skirt 140 and the lower wind shield 114 are arranged at the same horizontal position. Figure 10 Before the installation of the fairing skirts (i.e., the first skirt, second skirt, front windshield, and lower windshield), the airflow near the trailer's rear wheels is affected by the mutual interference between the longitudinal inflow and the airflow caused by the rotation of the trailer's rear wheels, resulting in strong air turbulence near the trailer's rear wheels and the formation of a complex vortex system. The airflow is driven upward by the rotating rear wheels, but is squeezed by the rear wheel housing and flows outward from the rear wheels. Coupled with the rotation of the rear wheels, the airflow flows inward at the rear of the vehicle, forming a large mixing vortex behind the vehicle body. Turbulent airflow near the rear wheels can easily increase driving resistance and negatively impact the vehicle's aerodynamic characteristics. The installation of the lower windshield 114 further improves the smoothness of airflow under the vehicle body 210. In conjunction with the first skirt, second skirt, and front windshield, it reduces the impact of the longitudinal inflow on the trailer's tires and axles, reducing the strong air turbulence around the trailer tires. The lower windshield 114 also secures the support skirt 140, ensuring its stable installation.

[0069] In order to achieve the installation and fixation of the fairing skirt 110, a plurality of horizontal first connecting plates 116 may be further provided at the top end of the fairing skirt 110. The first connecting plates 116 may be connected to the vehicle body 210 by screwing.

[0070] Continuing from the above, at least one vertical fixing bracket 150 located outside the supporting skirt 140 includes a fixing bracket 150 located at the second capture housing 130. A horizontal second fixing plate 153 connected to the second capture housing 130 may also be provided at the lower portion of the outer side of the fixing bracket 150 located at the second capture housing 130. For example, the second fixing plate 153 may be screwed to the bottom of the second capture housing 130. To strengthen the connection between the second fixing plate 153 and the second capture housing 130, the bottom of the second capture housing 130 has a recessed mounting groove (not shown) adapted to fit the second fixing plate 153.

[0071] In order to further ensure the stability of the connection structure of the second collecting shell 130, the second collecting shell 130 (second shell body 131) further has an upwardly protruding second connecting plate 135 at the top of the front end. The second connecting plate 135 is connected to the rear end of the rear wheel cover 214 of the trailer.

[0072] refer to Figure 9 , an inwardly recessed groove 115 can also be provided at the rear end of the first skirt 111. The groove 115 can be a rectangular groove 115 or a trapezoidal groove 115, etc., and is not strictly limited. The groove 115 is arranged on the outside of the second capture shell 130. The angle α between the bottom surface of the groove 115 and the first skirt 111 can be 0-10°. Preferably 5°. In the above-mentioned improved structure, the rectangular groove 115 can better control the direction of the airflow outside the second capture shell 130, and the airflow outside the second capture shell 130 is smoother, thereby reducing the wind resistance at the rear of the vehicle body 210.

[0073] refer to Figure 8 The inner wall of the top plate of the second housing 131 may further be provided with an upwardly recessed cavity 134 extending along the width direction of the vehicle body 210 near the air inlet 132. In the above-described improved structure, the upwardly recessed cavity 134 can better ensure the pressure difference at the air inlet 132, allowing tire wear particles to more effectively enter the second collection channel within the second housing 131, thereby improving collection efficiency.

[0074] Regarding the shape of the cavity 134, the cavity 134 may be a right triangle. Figure 8The angle β between the front sidewall of the cavity 134 and the top surface of the second shell body 131 can be 40-60°, preferably 50°. When the vehicle is moving, due to airflow, the triangular, upwardly protruding cavity 134 can better form a low-pressure inlet at the air inlet 132 of the second capture channel. A higher pressure differential facilitates the entry of airflow and particulate matter from behind the rearmost rear wheel 213 into the capture channel, improving capture efficiency.

[0075] It is understandable that the vertical cross-section of the cavity 134 (along the front-to-rear direction of the vehicle body 210 ) may also be an arc-shaped or rectangular structure. However, compared with the triangular structure, the pressure difference formed at the air inlet 132 of the second capture channel is relatively lower.

[0076] In a preferred embodiment, the first particle adsorption mechanism and / or the second particle adsorption mechanism can be detachably plugged into the corresponding first shell body 121 and / or the second shell body 131. The first shell body 121 and / or the second shell body 131 have corresponding mounting slots 160 extending along the width direction of the vehicle body 210.

[0077] The first and second particle adsorption mechanisms may include a mounting frame (not shown) and a porous filter (not shown) removably mounted within the mounting frame. In the improved structure, the porous filter can better adsorb particulate matter and is removable and replaceable, maintaining a consistently good capture and adsorption capability.

[0078] In this embodiment, the total length of the second capture channel can be 1700 mm, the second particle adsorption mechanism can be placed at a position 1400 mm away from the air inlet 132, the thickness of a single porous filter is 10 mm, and the interval between the two porous filters is 20 mm.

[0079] refer to Figure 11 and Figure 12 ,in, Figure 11 1 is a graph showing the total capture rate of tire wear particles by the first capture shell 120 of the capture device 100 according to an embodiment of the present invention at different vehicle speeds; Figure 12 This graph shows the total capture efficiency of tire wear particles by the second capture housing 130 of the capture device 100 according to one embodiment of the present invention at different vehicle speeds. Tests show that at speeds of 40-80 km / h on a container freight truck trailer, the capture efficiency for tire wear particles with a diameter of 0.1 μm to 280 μm can reach 24%-47%. This effectively reduces the dispersion of tire wear particles and road dust particles, achieving high capture efficiency and protecting the environment.

[0080] In addition, the capturing device 100 of the embodiment of the present application can effectively reduce the resistance of the vehicle while realizing the capturing of the tire wear particles, and the resistance coefficient is reduced from 0.586 to 0.519, and the resistance is reduced by 11.43%.

[0081] In summary, according to the capturing device 100 of the present application, by setting the rectifying apron 110, the first capturing shell 120 and the second capturing shell 130, the tire wear particles of the rear wheel 213 can be maximally introduced into the capturing device 100 for capturing and adsorption, and the harmful tire wear particles can be reduced to enter the air, and the capturing effect is good; at the same time, the fixing frame 150 including the first fixing plate 152 and the second fixing plate 153 is set, and the installation and fixation of the bearing apron 140 (the first capturing shell 120) and the second capturing shell 130 are simultaneously realized, and the fixing frame 150 has multifunctionality; in addition, the rear end of the first apron 111 is provided with the groove 115, the airflow direction outside the second capturing shell 130 can be better controlled, the airflow outside the second capturing shell 130 is smoother, and the wind resistance of the tail of the vehicle body 210 is reduced; the inner wall of the top plate of the second shell body 131 is further provided with the recessed cavity 134 near the air inlet 132, the pressure difference at the air inlet 132 can be better ensured, the tire wear particles can be better introduced into the second capturing channel in the second shell body 131, and the capturing efficiency is further improved.

[0082] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

Claims

1. A tire wear particle collection device for a motor vehicle, the motor vehicle comprising a vehicle body, and at least one pair of front wheels and at least two pairs of rear wheels respectively provided to the front and rear of the vehicle body, characterized in that: The capture device comprises: fairing skirts connected to the vehicle body, the fairing skirts including at least a first skirt located outboard of the at least one pair of rear wheels; a first collecting housing provided below the vehicle body and between the rear wheels on both sides of the vehicle body, the first collecting housing including a relatively closed first shell body extending along the length direction of the vehicle body, air intake ducts protruding outwardly and connected to the area between two adjacent rear wheels at corresponding positions are provided on both sides of the first shell body, a first exhaust port is provided at the rear end of the first shell body, and a first particle adsorption mechanism is provided on the first shell body near the first exhaust port; and A second collection shell is arranged below the vehicle body, on the inner side of the first skirt panel on the corresponding side and behind the rearmost rear wheel on the corresponding side. The second collection shell includes a relatively closed second shell body extending along the length direction of the vehicle body. The front side of the second shell body is provided with an air intake connected to the rear area of ​​the rearmost rear wheel, the rear end of the second shell body is provided with a second exhaust port, and the second shell body is provided with a second particle adsorption mechanism near the second exhaust port.

2. The capture device according to claim 1, characterized in that The fairing skirt also includes: a second skirt panel connected to the first skirt panel on the corresponding side, the second skirt panel being configured to be positioned behind the rearmost front wheel and in front of the forwardmost rear wheel; The left and right sides of the front wind deflectors are respectively connected to the second skirt panels on the corresponding sides, and the front wind deflectors are configured to be recessed rearward with the top edge located in front of the bottom edge.

3. The capture device according to claim 2, characterized in that The capturing device further includes a supporting skirt plate provided below the first capturing shell and between the rear wheels, and the first capturing shell is fixed to a top surface of the supporting skirt plate.

4. The capture device according to claim 3, characterized in that An upwardly inclined tail wing plate is further provided at the rear end of the supporting skirt plate, and the angle between the tail wing plate and the supporting skirt plate is 130-140°; and / or The fairing skirt further includes a lower wind shield plate connected to the bottom edges of the front wind shield plate and the second skirt plate respectively, and the front end of the supporting skirt plate is also connected to the lower wind shield plate.

5. The capture device according to claim 1, characterized in that The capture device also includes at least one vertical fixing frame located outside the supporting skirt, the inner upper portion of the fixing frame is provided with a connecting seat connected to the vehicle body, and the inner lower portion of the fixing frame is provided with a first fixing plate connected to the supporting skirt.

6. The capture device according to claim 5, characterized in that A second fixing plate connected to the second capturing shell is further provided at the outer lower portion of the fixing frame of the at least one vertical fixing frame located at the second capturing shell.

7. The capture device according to claim 1, characterized in that An inwardly recessed groove is further provided at the rear end of the first skirt plate, and an angle between the bottom surface of the groove and the first skirt plate is 0-10°.

8. The capture device according to claim 1, characterized in that The inner wall of the top plate of the second shell body is further provided with an upwardly recessed cavity extending in the width direction of the vehicle body near the air inlet; and / or The motor vehicle is a container freight truck trailer.

9. The capture device according to claim 8, characterized in that The cavity is configured as a right-angled triangle cavity, and an angle between a front side wall of the cavity and a top plate surface of the second shell body is 40-60°.

10. The capture device according to claim 1, characterized in that The first particle adsorption mechanism and / or the second particle adsorption mechanism are detachably plugged into the corresponding first shell body and / or the second shell body, and the first shell body and / or the second shell body have corresponding mounting slots extending along the width direction of the vehicle body.

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