Brake disc rust removal methods and rust removal devices, controllers, and vehicles

Abstract

This invention discloses a method, device, controller, and vehicle for removing rust from brake discs. The method includes: acquiring vehicle parameter information, including the vehicle's speed; determining, based on the parameter information, that the vehicle meets preset rust removal conditions; determining the rust removal hydraulic pressure and duration of the hydraulic cylinder according to the speed; and controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and duration. This rust removal method can remove accumulated rust, improve vehicle driving safety, and balance driving experience with rust removal effectiveness during the process.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a method for removing rust from brake discs, a controller, a device for removing rust from brake discs, and a vehicle. Background Technology

[0002] With the increasing sales and ownership of automobiles, consumers are demanding higher standards. In the context of the rapid development of new energy vehicles, various car brands are widely applying electric energy recovery technology to electric vehicles to increase range and take advantage of their unique characteristics. However, in vehicles with energy recovery systems, the brake discs experience fewer effective friction cycles from the calipers, making them more prone to rust accumulation. This is because energy recovery is used for deceleration during braking, but the kinetic energy transferred to the mechanical hydraulic braking system during this process is minimal. This results in a small force exerted by the brake pads on the brake discs, preventing effective removal of rust. Consequently, after prolonged use, the brake discs are prone to rust. Rusted brake discs cannot provide adequate braking performance when the vehicle truly needs braking intervention, posing a safety hazard.

[0003] Current technologies directly control hydraulic cylinders to drive brake pads to wipe and remove rust from brake discs at fixed pressure and time. However, this method does not take into account the user's driving experience and has poor rust removal effect. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide a method for removing rust from brake discs. This method involves acquiring vehicle parameter information, including the vehicle's speed. Based on this parameter information, and determining that the vehicle meets preset rust removal conditions, the method determines the rust removal hydraulic pressure and duration of the hydraulic cylinder according to the driving speed. Based on the rust removal hydraulic pressure and duration, the method controls the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc. This process effectively removes accumulated rust, improves vehicle driving safety, and balances driving experience with rust removal efficiency.

[0005] The second objective of this invention is to provide a controller.

[0006] The third objective of this invention is to provide a brake disc rust removal device.

[0007] The fourth objective of this invention is to provide a vehicle.

[0008] To achieve the above objectives, a first aspect of the present invention provides a method for removing rust from a brake disc. The method includes: acquiring vehicle parameter information, wherein the parameter information includes the vehicle's travel speed; determining, based on the parameter information, that the vehicle meets preset rust removal conditions; determining the rust removal hydraulic pressure and rust removal duration of a hydraulic cylinder according to the travel speed; and controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and the rust removal duration.

[0009] According to an embodiment of the present invention, a brake disc rust removal method acquires vehicle parameter information, including the vehicle's travel speed. When the vehicle meets preset rust removal conditions based on the parameter information, the rust removal hydraulic pressure and duration of the hydraulic cylinder are determined based on the travel speed. Based on the rust removal hydraulic pressure and duration, the hydraulic cylinder is controlled to drive the brake pads to wipe and remove rust from the brake disc. Therefore, this method can remove accumulated rust, improve vehicle driving safety, and balance driving experience with rust removal effectiveness during the rust removal process.

[0010] In addition, the brake disc rust removal method according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, the preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, and the vehicle's lateral acceleration is less than a first preset acceleration; or, the preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, the vehicle's lateral acceleration is less than a first preset acceleration, the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are all in an off state, the total number of rust removal operations during the current vehicle driving process is less than the preset number of rust removal operations, and the time interval between two adjacent rust removal operations exceeds a preset interval.

[0012] According to one embodiment of the present invention, after controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc, the method further includes: when the vehicle meets the preset exit rust removal conditions, stopping the control of the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc.

[0013] According to one embodiment of the present invention, the preset rust removal exit conditions include: the brake disc wiping function is in a fault state, or the driving speed is less than a second preset driving speed, or the accelerator pedal opening is less than a third preset opening, or the vehicle's lateral acceleration is greater than a second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration; or, the preset rust removal exit conditions include: the brake disc wiping function is in a fault state, or the driving speed is less than a second preset driving speed, or the accelerator pedal opening is less than a third preset opening, or the vehicle's lateral acceleration is greater than a second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration, or one or more of the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are in an active state; wherein, the second preset driving speed is less than or equal to the first preset driving speed, the third preset opening is less than or equal to the first preset opening, and the second preset acceleration is greater than or equal to the first preset acceleration.

[0014] According to one embodiment of the present invention, determining the rust-removing hydraulic pressure and rust-removing duration of the hydraulic cylinder based on the travel speed includes: determining the speed range in which the travel speed is located; determining a wiping rust removal curve based on the speed range, wherein different speed ranges correspond to different wiping rust removal curves; and determining the rust-removing hydraulic pressure and the rust-removing duration based on the wiping rust removal curve.

[0015] According to one embodiment of the present invention, the driving speed is negatively correlated with the rust removal duration.

[0016] According to one embodiment of the present invention, the rust removal curve is divided into three stages based on the rust removal duration. In the first stage, the rust removal hydraulic pressure is positively correlated with the rust removal duration. In the second stage, the rust removal hydraulic pressure is a fixed value. In the third stage, the rust removal hydraulic pressure is negatively correlated with the rust removal duration.

[0017] To achieve the above objectives, a controller is provided in a second aspect of the present invention, comprising a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the above-described brake disc rust removal method.

[0018] According to the controller of the present invention, by executing the above-described brake disc rust removal method, accumulated rust can be wiped away, improving vehicle driving safety, and the driving experience and rust removal effect can be taken into account during the rust removal process.

[0019] To achieve the above objectives, a third aspect of the present invention provides a brake disc rust removal device, the device comprising: an acquisition module for acquiring vehicle parameter information, wherein the parameter information includes the vehicle's travel speed; a determination module for determining, based on the travel speed, the rust removal hydraulic pressure and rust removal duration of a hydraulic cylinder when the vehicle meets preset rust removal conditions based on the parameter information; and a control module for controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and the rust removal duration.

[0020] According to an embodiment of the brake disc rust removal device of the present invention, an acquisition module is used to acquire vehicle parameter information, including the vehicle's driving speed. A determination module is used to determine the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder based on the driving speed, provided that the vehicle meets preset rust removal conditions based on the parameter information. A control module is used to control the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and rust removal duration. Therefore, this device can remove accumulated rust, improve vehicle driving safety, and balance driving experience with rust removal effectiveness during the rust removal process.

[0021] To achieve the above objectives, a vehicle is provided in a fourth aspect of the present invention, comprising the controller described above and the brake disc rust removal device described above.

[0022] According to the vehicle of the present invention, the accumulated rust can be wiped away by the controller and the brake disc rust removal device described above, thereby improving the vehicle's driving safety and taking into account both driving experience and rust removal effect during the rust removal process.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Figure 1 A flowchart of a brake disc rust removal method according to an embodiment of the present invention;

[0025] Figure 2 A flowchart illustrating a brake disc rust removal method according to a specific example of the present invention;

[0026] Figure 3 This is a block diagram of a controller according to an embodiment of the present invention;

[0027] Figure 4 This is a block diagram of a brake disc rust removal device according to an embodiment of the present invention;

[0028] Figure 5 A schematic block diagram of a vehicle according to an embodiment of the present invention;

[0029] Figure 6 This is a block diagram of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following description, with reference to the accompanying drawings, outlines the brake disc rust removal method, controller, brake disc rust removal device, and vehicle according to embodiments of the present invention.

[0032] Figure 1 A flowchart illustrating a brake disc rust removal method according to an embodiment of the present invention.

[0033] like Figure 1 As shown, the brake disc rust removal method of this embodiment of the invention may include the following steps:

[0034] S1, obtain vehicle parameter information; among which, the parameter information includes the vehicle's driving speed.

[0035] S2, based on parameter information, determines the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder according to the driving speed, provided that the vehicle meets the preset rust removal conditions.

[0036] S3, based on the rust removal hydraulic pressure and rust removal duration, controls the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc.

[0037] Specifically, during vehicle operation, vehicle parameter information can be acquired. This includes vehicle speed, which can be obtained via a speed sensor. Other parameters include vehicle acceleration, engine speed, and total mileage. For example, vehicle acceleration can be obtained via an acceleration sensor, engine speed via a crankshaft position sensor, and total mileage via a odometer sensor. Once the vehicle meets preset rust removal conditions based on the parameter information, the hydraulic pressure and duration for rust removal in the hydraulic cylinder can be determined based on the vehicle's speed. These preset rust removal conditions are pre-set conditions; that is, rust removal can be performed on the brake discs once the vehicle meets these conditions based on the parameter information. For example, the preset rust removal conditions can be determined when the vehicle's total mileage exceeds a certain value, or when the vehicle's acceleration exceeds a certain value, or when the vehicle's speed exceeds a certain value. Different driving speeds correspond to different rust removal hydraulic pressures and rust removal durations. For example, the rust removal hydraulic pressure and rust removal duration can be determined by a pre-set correspondence. If the relationship between driving speed and rust removal hydraulic pressure and rust removal duration is determined in advance, the rust removal hydraulic pressure and rust removal duration can be obtained by directly calling the correspondence after the driving speed is determined.

[0038] After determining the hydraulic pressure and duration for rust removal, the hydraulic cylinder can be controlled to drive the brake pads to wipe and remove rust from the brake disc based on these parameters. For example, the rust removal time can be divided into two segments. In the first half of the rust removal time, the hydraulic pressure can be gradually increased to quickly and steadily remove rust. In the second half of the rust removal time, the hydraulic pressure can be gradually decreased until it reaches zero to complete the wiping of the brake disc. Therefore, rust removal through active pressurization requires no additional components and can determine the optimal hydraulic pressure and duration based on the vehicle's current speed, thus balancing driving experience with superior rust removal results.

[0039] According to one embodiment of the present invention, the preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, and the vehicle's lateral acceleration is less than a first preset acceleration; or, the preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, the vehicle's lateral acceleration is less than a first preset acceleration, the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are all in an off state, the total number of rust removal operations during the current vehicle driving process is less than a preset number of wiping operations, and the time interval between two adjacent rust removal operations exceeds a preset interval. The first preset driving speed, first preset opening, second preset opening, first preset acceleration, preset number of wiping operations, and preset interval can be determined according to actual conditions.

[0040] Specifically, the vehicle meets the preset rust removal conditions when the brake disc wiping function is working normally, the driving speed is greater than or equal to the first preset driving speed, the accelerator pedal opening is greater than the first preset opening but less than the second preset opening, and the vehicle's lateral acceleration is less than the first preset acceleration. For example, the first preset driving speed can be 50 km / h, the first preset opening can be 12%, and the second preset opening can be 60%. Here, the accelerator pedal opening refers to the degree to which the pedal is pressed, or the percentage of the pedal's position relative to its maximum travel. A first preset opening of 12% means the pedal is pressed at 12% of its maximum travel, and a second preset opening of 60% means the pedal is pressed at 60% of its maximum travel. The first preset acceleration can be 1 m / s². 2 Therefore, this can be achieved when the brake disc wiping function is in normal working condition, the vehicle's current speed is greater than 50 km / h, the accelerator pedal opening is greater than 12% and less than 60%, and the vehicle's lateral acceleration is less than 1 m / s². 2 This confirms that the vehicle meets the preset rust removal conditions, and the brake discs can be wiped clean to remove rust.

[0041] It should be noted that the accelerator pedal opening needs to be kept within a certain range to meet the preset rust removal conditions. For example, to avoid the vehicle being tested for acceleration performance, the maximum value of the accelerator pedal can be set to the second preset opening of 60%.

[0042] In another embodiment of the present invention, when the vehicle includes auxiliary functions (such as ABS (Anti-lock Braking System), TCS (Traction Control System), and VDC (Vehicle Dynamic Control System), and to avoid frequent wiping and rust removal of the brake discs, the following conditions can be met: the brake disc wiping function is in normal working condition; the driving speed is greater than or equal to a first preset driving speed; the accelerator pedal opening is greater than a first preset opening and less than a second preset opening; the vehicle's lateral acceleration is less than a first preset acceleration; the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are all in an off state; the total number of rust removals during the current vehicle driving process is less than a preset number of rust removals; and the time interval between two adjacent rust removals exceeds a preset interval. Ensure the vehicle meets preset rust removal conditions. For example, the first preset speed can be 50 km / h, the first preset accelerator pedal opening can be 12%, and the second preset opening can be 60%. Additionally, to prevent excessive rust removal of the brake discs during a single ignition cycle, the preset number of wiping cycles can be 6. To avoid frequent rust removal of the brake discs, the preset interval can be set to 120 seconds. Therefore, the brake disc wiping function can be performed when the vehicle's current speed is greater than 50 km / h, the accelerator pedal opening is greater than 12% and less than 60%, and the vehicle's lateral acceleration is less than 1 m / s². 2 If the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are all in the off state, and the total number of rust removal operations during the vehicle's operation is less than 6, and the time interval between two adjacent rust removal operations exceeds 2 minutes, then the vehicle can be determined to meet the preset rust removal conditions, and the brake discs can be wiped and rust removed.

[0043] According to one embodiment of the present invention, after the hydraulic cylinder drives the brake pads to wipe and remove rust from the brake disc, the method further includes: when the vehicle meets the preset exit rust removal conditions, stopping the hydraulic cylinder from driving the brake pads to wipe and remove rust from the brake disc.

[0044] Specifically, after the hydraulic cylinder drives the brake pads to wipe and remove rust from the brake disc, it can be determined whether the vehicle meets the preset rust removal exit conditions. If the vehicle meets the preset exit conditions, the rust removal process can be stopped. For example, after the vehicle has been parked for a long time, to avoid unnecessary friction caused by continuous contact between the brake pads and the brake disc and to reduce brake pad wear, the rust removal process can be stopped. When the vehicle meets the preset rust removal conditions again, the brake disc wiping function can be reactivated to ensure the normal operation and safety of the braking system.

[0045] According to one embodiment of the present invention, the preset exit conditions for rust removal include: the brake disc wiping function is in a fault state, or the driving speed is less than a second preset driving speed, or the accelerator pedal opening is less than a third preset opening, or the vehicle's lateral acceleration is greater than a second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration; or, the preset exit conditions for rust removal include: the brake disc wiping function is in a fault state, or the driving speed is less than a second preset driving speed, or the accelerator pedal opening is less than a third preset opening, or the vehicle's lateral acceleration is greater than a second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration, or one or more of the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are in an active state; wherein, the second preset driving speed, the third preset opening, and the second preset acceleration can be determined according to actual conditions, and the second preset driving speed is less than or equal to the first preset driving speed, the third preset opening is less than or equal to the first preset opening, and the second preset acceleration is greater than or equal to the first preset acceleration.

[0046] Specifically, when the brake disc wiping function is in a faulty state, such as when the vehicle is using a hydraulic brake disc wiping system, a failure of the hydraulic system may also cause the wiping function to fail, or there may be problems with the electrical connection and control circuit of the brake disc wiping system, which may cause the wiping function to fail to work properly. Therefore, if it can be determined that the vehicle meets the preset exit rust removal conditions, the hydraulic cylinder can be stopped from driving the brake pads to wipe and remove rust from the brake disc.

[0047] Alternatively, if the vehicle's speed is lower than the second preset speed (e.g., the second preset speed is 35 km / h and the vehicle's speed is 10 km / h), it indicates that the current speed is low. If the vehicle meets the preset conditions for exiting rust removal, the hydraulic cylinder can be stopped from wiping the brake discs with the brake pads to prevent the vehicle speed from dropping further during rust removal, thus affecting normal vehicle operation. Or, if the accelerator pedal opening is less than the third preset opening (e.g., the third preset opening is 9% and the current accelerator pedal opening is 5%), it indicates that the current speed is low. If the vehicle meets the preset conditions for exiting rust removal, the hydraulic cylinder can be stopped from wiping the brake discs with the brake pads to prevent the vehicle speed from dropping further during rust removal, thus affecting normal vehicle operation.

[0048] Alternatively, when the vehicle's lateral acceleration exceeds a second preset acceleration, for example, a second preset acceleration of 1.5 m / s². 2 The current lateral acceleration of the vehicle is 3 m / s². 2This indicates that the vehicle is currently experiencing significant lateral acceleration, such as when the vehicle is driving through a curve, making a fast turn, or suddenly changing lanes. If the vehicle meets the preset conditions for exiting rust removal, the hydraulic cylinder can be stopped from wiping the brake discs with the brake pads to remove rust, thus preventing the rust removal of the brake discs from affecting the vehicle's driving status in emergency situations.

[0049] Alternatively, if the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration, for example, if the rust removal time is 8 seconds and the wiping and removing rust from the brake disc is 9 seconds, it indicates that the optimal rust removal time has been reached. Within this time, the rust removal effect can be achieved, and the hydraulic cylinder can be stopped to drive the brake pads to wipe and remove rust from the brake disc, thus avoiding over-wiping and saving energy.

[0050] In another embodiment of the present invention, when the vehicle includes some auxiliary functions (such as anti-lock braking system ABS, traction control system TCS, vehicle dynamic control system VDC), in addition to stopping the control of the hydraulic cylinder to drive the brake pads to wipe the brake disc to remove rust when the above-mentioned brake disc wiping function is in a fault state, or the driving speed is less than the second preset driving speed, or the accelerator pedal opening is less than the third preset opening, or the vehicle lateral acceleration is greater than the second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration, the control of the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc is also stopped when one or more of the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are in an active state.

[0051] For example, when the vehicle's anti-lock braking system (ABS), traction control system (TCS), dynamic stability control system (Vehicle Dynamics Control System) are engaged, or when both ABS and traction control systems are engaged, or when both traction control and dynamic stability control systems are engaged, or when all three are engaged, the system typically monitors parameters such as vehicle speed, tire grip, and steering angle. Based on these parameters, it adjusts braking force, engine output force, or vehicle stability. To avoid unnecessary interference and ensure vehicle safety and stability, it stops controlling the hydraulic cylinders to wipe and remove rust from the brake discs by moving the brake pads.

[0052] According to one embodiment of the present invention, determining the rust-removing hydraulic pressure and rust-removing duration of the hydraulic cylinder based on the travel speed includes: determining the speed range within which the travel speed falls; determining a wiping rust-removing curve based on the speed range, wherein different speed ranges correspond to different wiping rust-removing curves; and determining the rust-removing hydraulic pressure and rust-removing duration based on the wiping rust-removing curve. The travel speed is negatively correlated with the rust-removing duration.

[0053] Specifically, when determining the rust-removing hydraulic pressure and duration of the hydraulic cylinder based on the vehicle's speed, the speed range can be determined first. For example, a speed of 50 km / h to 60 km / h can be classified as the first speed range, 60 km / h to 70 km / h as the second speed range, 70 km / h to 80 km / h as the third speed range, and speeds above 80 km / h as the fourth speed range. Thus, once the vehicle's current speed is determined, the corresponding speed range can be identified.

[0054] After determining the speed range, a rust removal curve can be established based on that range. Different speed ranges correspond to different rust removal curves, which in turn allow for the determination of the rust removal hydraulic pressure and duration. For example, the horizontal axis of the rust removal curve represents the rust removal duration, and the vertical axis represents the rust removal hydraulic pressure. Different speed ranges correspond to different rust removal curves, and consequently, different rust removal hydraulic pressures and durations. Notably, driving speed and rust removal duration are negatively correlated; higher driving speeds correspond to shorter rust removal times, while lower driving speeds correspond to longer rust removal times. This means that at higher driving speeds, the brake disc surface temperature may be higher, which helps to quickly evaporate moisture or volatilize surface grease, thus allowing for a relatively shorter rust removal time. Furthermore, at higher driving speeds, drivers are more focused on driving feel and vehicle responsiveness; a shorter rust removal time reduces braking delay, improves braking responsiveness, and enhances the driving experience.

[0055] According to one embodiment of the present invention, the rust removal curve is divided into three stages based on the rust removal duration. In the first stage, the rust removal hydraulic pressure is positively correlated with the rust removal duration. In the second stage, the rust removal hydraulic pressure is a fixed value. In the third stage, the rust removal hydraulic pressure is negatively correlated with the rust removal duration.

[0056] Specifically, the rust removal curve can be divided into three stages based on the duration of rust removal. In the first stage, the rust removal hydraulic pressure is positively correlated with the duration of rust removal, that is, as the duration of rust removal increases, the rust removal hydraulic pressure increases accordingly. In the second stage, the rust removal hydraulic pressure is a fixed value, that is, as the duration of rust removal increases, the rust removal hydraulic pressure remains unchanged. In the third stage, the rust removal hydraulic pressure is negatively correlated with the duration of rust removal, that is, as the duration of rust removal increases, the rust removal hydraulic pressure decreases accordingly.

[0057] For example, within the first speed range (50 to 60 km / h), the rust removal duration can be 9 seconds, with the first stage lasting 0-3 seconds, during which the rust removal hydraulic pressure can rise from 0 to 4 bar. The second stage lasts 3-7.5 seconds, during which the rust removal hydraulic pressure remains constant at 4 bar. The third stage lasts 7.5-9 seconds, during which the rust removal hydraulic pressure can decrease from 4 bar to 0. Within the second speed range (60 to 70 km / h), the rust removal duration can be 8 seconds, with the first stage lasting 0-3 seconds, during which the rust removal hydraulic pressure rises from 0 to 4 bar. The second stage lasts 3-6.5 seconds, during which the rust removal hydraulic pressure remains constant at 4 bar. The third stage lasts 6.5-8 seconds, during which the rust removal hydraulic pressure decreases from 4 bar to 0. In the third speed range (70 to 80 km / h), the rust removal duration can be 7 seconds. The first stage can be 0-3 seconds, during which the rust removal hydraulic pressure rises from 0 to 4 bar. The second stage can be 3-5 seconds, during which the rust removal hydraulic pressure remains constant at 4 bar. In the third stage, the duration can be 5-7 seconds, during which the rust removal hydraulic pressure decreases from 4 bar to 0. In the fourth speed range (above 80 km / h), the rust removal duration can be 6 seconds. The first stage can be 0-3 seconds, during which the rust removal hydraulic pressure rises from 0 to 4 bar. The second stage can be 3-4 seconds, during which the rust removal hydraulic pressure remains constant at 4 bar. The third stage can be 4-6 seconds, during which the rust removal hydraulic pressure decreases from 4 bar to 0. Therefore, the hydraulic cylinder can be controlled to drive the brake pads to wipe and remove rust from the brake disc according to the rust removal hydraulic pressure and duration corresponding to the wiping rust removal curve.

[0058] The following is combined with Figure 2 The rust removal method of the present invention will be described below.

[0059] As a specific example, the brake disc rust removal method of the present invention may include the following steps:

[0060] S101, Obtain vehicle parameter information, including the vehicle's driving speed.

[0061] S102, determine whether the brake disc wiping function is in normal working condition, whether the driving speed is greater than or equal to the first preset driving speed, whether the accelerator pedal opening is greater than the first preset opening and less than the second preset opening, whether the vehicle's lateral acceleration is less than the first preset acceleration, whether the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are all in an off state, whether the total number of rust removal wiping operations during this vehicle driving process is less than the preset number of wiping operations, and whether the time interval between two adjacent rust removal operations exceeds the preset interval. If yes, proceed to step S103; if no, proceed to step S107.

[0062] S103, determine the speed range in which the driving speed is located.

[0063] S104, the wiping rust removal curve is determined based on the speed range, where different speed ranges correspond to different wiping rust removal curves.

[0064] S105, based on the rust removal curve, determines the rust removal hydraulic pressure and rust removal duration.

[0065] S106, based on the rust removal hydraulic pressure and rust removal duration, controls the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc.

[0066] S107, stop controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc.

[0067] In summary, the brake disc rust removal method according to embodiments of the present invention acquires vehicle parameter information, including the vehicle's travel speed. When the vehicle meets preset rust removal conditions based on the parameter information, the rust removal hydraulic pressure and duration of the hydraulic cylinder are determined according to the travel speed. Based on the rust removal hydraulic pressure and duration, the hydraulic cylinder is controlled to drive the brake pads to wipe and remove rust from the brake disc. Therefore, this method can remove accumulated rust, improve vehicle driving safety, and balance driving experience with rust removal effectiveness during the rust removal process.

[0068] Corresponding to the above embodiments, the present invention also proposes a controller.

[0069] like Figure 3 As shown, the controller 200 of this embodiment may include: a memory 210, a processor 220, and a program stored in the memory 210 and executable on the processor 220. When the processor 220 executes the program, it implements the above-mentioned brake disc rust removal method.

[0070] According to the controller of the present invention, by executing the above-described brake disc rust removal method, accumulated rust can be wiped away, improving vehicle driving safety, and the driving experience and rust removal effect can be taken into account during the rust removal process.

[0071] Corresponding to the above embodiments, the present invention also proposes a brake disc rust removal device.

[0072] like Figure 4 As shown, the brake disc rust removal device 100 of this embodiment includes: an acquisition module 110, a determination module 120 and a control module 130.

[0073] The acquisition module 110 is used to acquire vehicle parameter information, including the vehicle's travel speed. The determination module 120 is used to determine the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder based on the travel speed, provided that the vehicle meets the preset rust removal conditions based on the parameter information. The control module 130 is used to control the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and rust removal duration.

[0074] According to one embodiment of the present invention, the preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, and the vehicle's lateral acceleration is less than a first preset acceleration; or, the preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, the vehicle's lateral acceleration is less than a first preset acceleration, the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are all in an off state, the total number of rust removal operations during the current vehicle driving process is less than the preset number of rust removal operations, and the time interval between two adjacent rust removal operations exceeds a preset interval.

[0075] According to one embodiment of the present invention, after the control hydraulic cylinder drives the brake pads to wipe and remove rust from the brake disc, the control module 130 is further configured to stop controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc when the vehicle meets the preset exit rust removal conditions.

[0076] According to one embodiment of the present invention, the preset conditions for exiting rust removal include: the brake disc wiping function is in a fault state, or the driving speed is less than a second preset driving speed, or the accelerator pedal opening is less than a third preset opening, or the vehicle's lateral acceleration is greater than a second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration; or, the preset conditions for exiting rust removal include: the brake disc wiping function is in a fault state, or the driving speed is less than a second preset driving speed, or the accelerator pedal opening is less than a third preset opening, or the vehicle's lateral acceleration is greater than a second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration, or one or more of the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are in an active state; wherein, the second preset driving speed is less than or equal to a first preset driving speed, the third preset opening is less than or equal to a first preset opening, and the second preset acceleration is greater than or equal to a first preset acceleration.

[0077] According to one embodiment of the present invention, the determining module 120 determines the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder based on the travel speed, specifically for: determining the speed range in which the travel speed is located; determining the wiping rust removal curve based on the speed range, wherein different speed ranges correspond to different wiping rust removal curves; and determining the rust removal hydraulic pressure and rust removal duration based on the wiping rust removal curve.

[0078] According to one embodiment of the present invention, the driving speed is negatively correlated with the duration of rust removal.

[0079] According to one embodiment of the present invention, the rust removal curve is divided into three stages based on the rust removal duration. In the first stage, the rust removal hydraulic pressure is positively correlated with the rust removal duration. In the second stage, the rust removal hydraulic pressure is a fixed value. In the third stage, the rust removal hydraulic pressure is negatively correlated with the rust removal duration.

[0080] It should be noted that for details not disclosed in the brake disc rust removal device of the present invention, please refer to the details disclosed in the brake disc rust removal method of the present invention, which will not be repeated here.

[0081] According to an embodiment of the brake disc rust removal device of the present invention, an acquisition module is used to acquire vehicle parameter information, including the vehicle's driving speed. A determination module is used to determine the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder based on the driving speed, provided that the vehicle meets preset rust removal conditions based on the parameter information. A control module is used to control the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and rust removal duration. Therefore, this device can remove accumulated rust, improve vehicle driving safety, and balance driving experience with rust removal effectiveness during the rust removal process.

[0082] Corresponding to the above embodiments, the present invention also proposes a vehicle.

[0083] like Figure 5 As shown, the vehicle 300 in this embodiment of the invention may include the controller 200 described above, or, as... Figure 6 As shown, the vehicle 300 of this embodiment may include the brake disc rust removal device 100 described above.

[0084] According to the embodiments of the present invention, the vehicle can remove accumulated rust by means of the controller or the brake disc rust removal device described above, thereby improving vehicle driving safety and taking into account both driving experience and rust removal effect during the rust removal process.

[0085] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0086] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0087] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] Furthermore, 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for removing rust from brake discs, characterized in that, The method includes: Obtain vehicle parameter information; wherein the parameter information includes the vehicle's driving speed; When the vehicle meets the preset rust removal conditions based on the parameter information, the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder are determined according to the driving speed, including: determining the speed range in which the driving speed is located; determining the wiping rust removal curve based on the speed range, wherein different speed ranges correspond to different wiping rust removal curves; and determining the rust removal hydraulic pressure and the rust removal duration based on the wiping rust removal curve; wherein the driving speed and the rust removal duration are negatively correlated. Based on the rust removal hydraulic pressure and the rust removal duration, the hydraulic cylinder is controlled to drive the brake pads to wipe and remove rust from the brake disc; The rust removal curve is divided into three stages based on the rust removal duration. In the first stage, the rust removal hydraulic pressure is positively correlated with the rust removal duration. In the second stage, the rust removal hydraulic pressure is a fixed value. In the third stage, the rust removal hydraulic pressure is negatively correlated with the rust removal duration.

2. The method according to claim 1, characterized in that, The preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to a first preset driving speed, the accelerator pedal opening is greater than a first preset opening and less than a second preset opening, and the vehicle's lateral acceleration is less than a first preset acceleration; or, The preset rust removal conditions include: the brake disc wiping function is in normal working condition, the driving speed is greater than or equal to the first preset driving speed, the accelerator pedal opening is greater than the first preset opening and less than the second preset opening, the vehicle's lateral acceleration is less than the first preset acceleration, the vehicle's anti-lock braking system, traction control system and dynamic stability control system are all in the off state, the total number of rust removals during the current vehicle driving process is less than the preset number of rust removals, and the time interval between two adjacent rust removals exceeds the preset interval.

3. The method according to claim 2, characterized in that, After controlling the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc, the method further includes: When the vehicle meets the preset conditions for exiting rust removal, the hydraulic cylinder is stopped from driving the brake pads to wipe and remove rust from the brake disc.

4. The method according to claim 3, characterized in that, The preset conditions for exiting rust removal include: the brake disc wiping function is faulty, or the driving speed is less than the second preset driving speed, or the accelerator pedal opening is less than the third preset opening, or the vehicle's lateral acceleration is greater than the second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration; or... The preset conditions for exiting rust removal include: the brake disc wiping function is in a faulty state, or the driving speed is less than the second preset driving speed, or the accelerator pedal opening is less than the third preset opening, or the vehicle's lateral acceleration is greater than the second preset acceleration, or the duration of wiping and removing rust from the brake disc is greater than or equal to the rust removal duration, or one or more of the vehicle's anti-lock braking system, traction control system, and dynamic stability control system are in an active state; wherein, the second preset driving speed is less than or equal to the first preset driving speed, the third preset opening is less than or equal to the first preset opening, and the second preset acceleration is greater than or equal to the first preset acceleration.

5. A controller, characterized in that, include: The device includes a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the brake disc rust removal method according to any one of claims 1-4.

6. A brake disc rust removal device, said device being used to implement the brake disc rust removal method according to any one of claims 1-4, characterized in that, The device includes: An acquisition module is used to acquire vehicle parameter information, including the vehicle's driving speed. The determination module is used to determine the rust removal hydraulic pressure and rust removal duration of the hydraulic cylinder based on the driving speed, when it is determined that the vehicle meets the preset rust removal conditions based on the parameter information. The control module is used to control the hydraulic cylinder to drive the brake pads to wipe and remove rust from the brake disc based on the rust removal hydraulic pressure and the rust removal duration.

7. A vehicle, characterized in that, Includes the controller according to claim 5, or the brake disc rust removal device according to claim 6.

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