Brake particulate matter catcher adopting electrostatic adsorption principle

Abstract

The invention relates to a brake particulate matter catcher adopting an electrostatic adsorption principle, the particulate matter catcher is arranged on the two sides of a part of a brake disc of a brake, the particulate matter catcher on one side comprises a porous material, an electrode plate and a shell which are sequentially arranged from inside to outside, and when the electrode plate is powered on, the porous material, the electrode plate and the shell are connected in sequence. An electrostatic field is generated in a cavity between the porous materials of the particulate matter traps on the two sides, and metal particulate matter exists in the cavity. Compared with the prior art, the device has the advantages of improving the collection efficiency of the brake particles and the like.

Description

Technical Field

[0001] The invention relates to the field of automobile braking and air pollution prevention and control, and in particular to a braking particle collector adopting the electrostatic adsorption principle. Background Art

[0002] During the braking process, the friction between the brake pad and the brake disc will generate a large amount of metal particles. These particles are discharged into the environment with the airflow, causing serious impact on air quality.

[0003] Braking particulate matter emissions refer to the tiny particles generated by the friction between the brake pads (brake pads) and the brake discs (or drums) during the braking process of the vehicle, which causes material wear. These particles mainly include metal particles, wear particles and dust, etc. They will be discharged into the environment with the airflow, affecting the air quality.

[0004] Particulate matter emitted by vehicles is one of the sources of PM2.5. With the strengthening of control over engine exhaust particulate matter emissions and the promotion of heavier electric vehicles, the relative contribution of non-exhaust emission sources (such as brake wear and tire wear) to automobile particulate matter emissions has increased. According to research, under urban conditions, non-exhaust particulate emissions account for about 50% of traffic-related particulate emissions, while brake wear particulate emissions account for 16% to 55% of non-exhaust emissions.

[0005] The EU's "Euro Stage VII Emission Standard" (Euro 7) sets additional limits on brake particle emissions for all vehicles for the first time. This regulation not only covers traditional exhaust emissions management, but also sets new requirements for brake particle emissions and tire microplastic emissions. The goal of Euro 7 is to reduce particulate emissions from brakes by 27%, that is, no more than 7 mg per kilometer, and this goal will last until 2035. From 2035, the limit of the Euro VII standard will be further reduced to 3 mg / kilometer. China has already begun to formulate standards related to brake particle emissions, and it is expected that brake particle emissions will also be restricted in the future.

[0006] However, most cars currently do not capture brake particulate matter, and a large amount of brake wear particles are directly discharged into the atmosphere, polluting the environment. The existing technology has a low capture efficiency for these particles and has certain limitations, which cannot fully meet the needs of future emission regulations and environmental protection. Summary of the invention

[0007] The purpose of the present invention is to provide a brake particle collector using the electrostatic adsorption principle in order to improve the collection efficiency of brake particle matter.

[0008] The purpose of the present invention can be achieved by the following technical solutions:

[0009] A brake particle collector using the principle of electrostatic adsorption, characterized in that the particle collector is arranged on both sides of a part of the brake disc of the brake, and the particle collector on one side includes a porous material, an electrode plate and a shell arranged in sequence from the inside to the outside. When the electrode plate is energized, an electrostatic field is generated in the cavity between the porous materials of the particle collectors on both sides, and metal particles exist in the cavity.

[0010] Furthermore, the electrode plate is wavy, and the specific form of the cross-sectional edge line on the side where the electrode plate and the porous material are connected is a straight line or a curve, and the curve is a triangular sawtooth or a sine-cosine curve or a cycloid.

[0011] Furthermore, the electrode plate is energized so that the particle collector on one side is energized.

[0012] Furthermore, the electrode plate is energized so that the particle collectors on both sides are energized.

[0013] Furthermore, the porous material integrates a viscous material.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention arranges electrode plates on both sides of the brake disc behind the brake pad, and applies voltage between the electrode plates, so that a cavity with an electrostatic field is formed between the porous materials inside the electrode plates on both sides, and the electrostatic field can adsorb the metal particles generated in the braking process. In addition, the electrode plates are designed as wavy electrode plates, and the specific form of the cross-sectional edge lines on the side where the electrode plates and the porous material are connected can be a curve, and the curve is a triangular sawtooth or a sine and cosine curve or a cycloid. The tip of the curve can concentrate the electric field strength in other places to improve the local electric field strength. At the same time, the curve changes the spatial potential distribution, changes the shape of the electric field, attracts the vortex motion of the particles, promotes the collision and agglomeration of the particles, and causes the vortex movement of the metal particles, thereby reducing the escape and improving the capture efficiency of the particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of the working state of the present invention;

[0017] Figure 2 It is a front view schematic diagram of the arrangement of the present invention;

[0018] Figure 3 It is an axle side schematic diagram of the arrangement of the present invention;

[0019] Figure 4 It is a schematic diagram of the double-sided working principle of the present invention;

[0020] Figure 5 It is a schematic diagram of the single-side working principle of the present invention;

[0021] Figure 6 A schematic diagram of a corrugated electrode plate of the present invention;

[0022] In the figure, there are brake disc 1, brake 2, particle collector 3, brake pad 4, electrode plate 5, porous material 6, cavity 7, metal particles 8, and shell 9. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0024] The present invention proposes a brake particle collector using the electrostatic adsorption principle. The particle collector 3 is arranged on both sides of a part of the brake disc 1 of the brake 2. The particle collector 3 on one side includes a porous material 6, an electrode plate 5 and a shell 9 arranged in sequence from the inside to the outside. When the electrode plate 5 is energized, an electrostatic field is generated in the cavity 7 between the porous materials 6 of the particle collectors 3 on both sides, and metal particles 8 exist in the cavity 7. It includes electrode plates arranged on both sides of the brake disc behind the brake pad for applying an electrostatic field, and a porous material arranged between the electrode plate and the brake disc for capturing light and small particles adsorbed by the electrostatic field; the metal particles generated during the braking process are adsorbed by the electrostatic field and captured on the porous material, thereby reducing the emission of brake particles. The beneficial effects of the present invention are: effectively capturing metal particles generated during the braking process and reducing pollution to the environment; combining the characteristics of more metal particles in the brake particle emission, the particle capture efficiency is improved through the adsorption of the electrostatic field; the structure is simple, easy to install and maintain, and can be separately installed on the existing disc brake system.

[0025] The electrode plates 5 of the present invention are arranged on both sides of the brake disc behind the brake pad, and are used to apply an electrostatic field; the porous material 6 is arranged between the electrode plates and the brake disc, and is used to capture light and small particles adsorbed by the electrostatic field. The metal particles 8 generated during the braking process are adsorbed by the electrostatic field and captured on the porous material, thereby reducing the emission of brake particles. There is a cavity 7 with an electrostatic field inside the collector 3 and between the brake disc 1.

[0026] Preferably, the electrode plate 5 of the present invention is wavy in shape, which is used to increase the local electric field strength, change the electric field shape, attract the vortex motion of particles, and promote the collision and agglomeration of particles; the setting of the wavy electrode plate improves the capture efficiency of particles.

[0027] Preferably, the specific form of the cross-sectional edge line of the connection side of the electrode plate 5 and the porous material 6 of the present invention is a straight line or a curve, and the curve is a triangular sawtooth or a sine-cosine curve or a cycloid. The surface of the electrode plate 5 is equipotential, and by setting the curve, the local electric field strength is increased by concentrating the electric field strength in other places, thereby increasing the electric adsorption force on the metal particles. At the same time, by changing the direction of the local electric field, the metal particles are vortexed and moved, thereby reducing escape.

[0028] Taking the triangular sawtooth as an example, the triangular sawtooth has a tip, and the electric field is concentrated near the tip, thereby improving the local intensity. Among the three implementation methods of triangular sawtooth, sine and cosine curve and cycloid, the tip of the triangular sawtooth is the sharpest and most dense, which may cause the local electric field strength to be too high to produce tip discharge, affecting the improvement of the overall electric field strength. The crests and troughs of the sine and cosine curves are the least sharp, and it is not easy to produce tip discharge, but the effect of concentrating the electric field strength in other places is poor, while the sharpness and density of the tip of the cycloid are moderate, and the effect of concentrating the electric field strength in other places is the best. The production cost of triangular sawtooth is low, the cost of sine and cosine curves is moderate, and the effect is also moderate, and the shape of the curve can be set according to demand.

[0029] The porous material 6 of the present invention can be optimized as follows: structural optimization is used to reduce the thickness of the captured particles and reduce the impact of particle agglomeration on the electric field strength; sticky material is used to improve the firmness of capture and reduce the shedding of particles; the structural design and the use of sticky material improve the dust capture efficiency.

[0030] The cross-sectional schematic diagram of the working state of the present invention is as follows Figure 1 As shown, during braking, the brake pad 4 and the brake 2 rub against each other to generate a large amount of metal particles 8. Under the action of inertia and airflow, the metal particles 8 enter the cavity 7 containing the electrostatic field along the brake disc 1, and move toward the porous material 6 under the action of the electrostatic field and are adsorbed.

[0031] The front view and the axial view of the arrangement of the present invention are as follows: Figure 2 and 3 The brake particle collector using the electrostatic adsorption principle is installed on both sides of the brake disc behind the brake pad, indicating that the brake particle collector has a simple structure and is easy to install, and can be installed separately on the existing disc brake system.

[0032] The schematic diagram of the double-side working principle of the present invention is as follows Figure 4 A voltage is applied between the electrode plates 5 on both sides of the brake disc 1 , thereby generating the cavity 7 with an electrostatic field therein, and the electrostatic field can adsorb metal particles 8 generated during the braking process, and the metal particles 8 are captured on the porous material 6 .

[0033] The schematic diagram of the single-side working principle of the present invention is as follows Figure 5 As shown. A voltage is applied between the brake disc 1 and the electrode plate 5 on one side, thereby generating a cavity 7 with an electrostatic field therein, and the electrostatic field can adsorb metal particles 8 generated during the braking process, and the metal particles 8 are captured on the porous material 6, thereby realizing the single-sided use of the brake particle collector 3; or a voltage is simultaneously applied between the brake disc 1 and the electrode plates 5 on both sides, thereby realizing the strengthening of the electrostatic field.

[0034] The schematic diagram of the corrugated electrode plate of the present invention is as follows Figure 6 As shown, the electrode plate 5 is optimized to be a wavy electrode plate, which is used to increase the local electric field strength, change the electric field shape, attract the vortex motion of particles, and promote the collision and agglomeration of particles; the setting of the wavy electrode plate improves the capture efficiency of particles.

[0035] The working principle of the present invention is as follows: the electrode plate 5 is arranged on both sides of the brake disc 1 behind the brake pad 4, and is used to apply an electrostatic field; the porous material 6 is arranged between the electrode plate 5 and the brake disc 1, and is used to capture light and small particles adsorbed by the electrostatic field; the metal particles 8 generated during the braking process are adsorbed by the electrostatic field and captured on the porous material 6, thereby reducing the emission of brake particles.

[0036] The schematic diagram of the arrangement of the present invention is as follows: Figure 3 shown.

[0037] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A brake particle collector using the electrostatic adsorption principle, characterized in that: The particle collector (3) is arranged on both sides of a part of the brake disc (1) of the brake (2), and the particle collector (3) on one side includes a porous material (6), an electrode plate (5) and a shell (9) arranged in sequence from the inside to the outside. When the electrode plate (5) is energized, an electrostatic field is generated in the cavity (7) between the porous materials (6) of the particle collectors (3) on both sides, and metal particles (8) exist in the cavity (7).

2. The brake particle collector using the electrostatic adsorption principle according to claim 1 is characterized in that: The electrode plate (5) is wavy in shape, and the specific form of the cross-sectional edge line on the side where the electrode plate (5) and the porous material (6) are connected is a straight line or a curve, and the curve is a triangular sawtooth or a sine-cosine curve or a cycloid.

3. The brake particle collector using the electrostatic adsorption principle according to claim 1 is characterized in that: The electrode plate (5) is energized so that the particle collector (3) on one side is energized.

4. The brake particle collector using the electrostatic adsorption principle according to claim 1 is characterized in that: The electrode plate (5) is energized so that the particle collectors (3) on both sides are energized.

5. The brake particle collector using the electrostatic adsorption principle according to claim 1 is characterized in that: The porous material (6) integrates the viscous material.

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