阅读说明：本技术 制动卡钳自动磨合方法 (Automatic brake caliper running-in method ) 是由 文翊 孙国正 李泽彬 何班本 于 2020-07-15 设计创作，主要内容包括：本发明涉及制动卡钳自动磨合领域,公开了一种制动卡钳自动磨合方法,标定ESC系统中的磨合轮缸压力,ESC系统在施加该磨合轮缸压力时,驱动制动卡钳使摩擦片向刹车盘运动,当车辆处于磨合期里程内行驶时,若在预设时间内无制动请求,且车速大于预设速度值时,ESC系统间断施加所述磨合轮缸压力若干次,然后制动卡钳回位。本发明制动卡钳自动磨合方法,自动完成制动卡钳的磨合,保障了制动效能,安全可靠,且成本低。(The invention relates to the field of automatic running-in of brake calipers, and discloses an automatic running-in method of the brake calipers. The automatic running-in method of the brake caliper automatically finishes the running-in of the brake caliper, guarantees the braking efficiency, and is safe, reliable and low in cost.)

1. The automatic brake caliper running-in method is characterized by comprising the following steps: the method comprises the steps of calibrating the pressure of a running-in wheel cylinder in an ESC system, driving a brake caliper to enable a friction plate to move towards a brake disc when the ESC system applies the pressure of the running-in wheel cylinder, and when a vehicle runs within a running-in period mileage and has no braking request within a preset time and the vehicle speed is greater than a preset speed value, applying the pressure of the running-in wheel cylinder for a plurality of times discontinuously by the ESC system, and then resetting the brake caliper.

2. The automatic brake caliper break-in method according to claim 1, characterized in that: when the pressure of the running-in wheel cylinder is applied, the ESC system drives the brake calipers to enable the friction plates to move towards the brake disc, and a safe distance is reserved between the friction plates and the brake disc.

3. The automatic brake caliper break-in method according to claim 2, characterized in that: when the ESC system applies the running-in wheel cylinder pressure, if the action stroke of the friction plate is too long, and the friction plate is attached to the brake disc, a supplement coefficient is introduced, the running-in wheel cylinder pressure automatically reduces the supplement coefficient, and a safety distance is kept between the friction plate and the brake disc until the ESC system applies the running-in wheel cylinder pressure.

4. The automatic brake caliper break-in method according to claim 1, characterized in that: and the ESC system intermittently applies the running-in wheel cylinder pressure for a plurality of times, resets the preset time after the brake calipers return, and intermittently applies the running-in wheel cylinder pressure for a plurality of times again and repeatedly circulates when the vehicle is within the running-in period mileage, no braking request is made within the reset preset time, and the vehicle speed is greater than the preset speed value.

5. The automatic brake caliper break-in method according to claim 1, characterized in that: the running-in period mileage is that the vehicle driving mileage is less than 7500 kilometers.

6. The automatic brake caliper break-in method according to claim 1, characterized in that: and resetting the running-in period mileage count after the vehicle is replaced with the brake system assembly.

7. The automatic brake caliper break-in method according to claim 1, characterized in that: the first preset speed is 30-40 kilometers per hour.

8. The automatic brake caliper break-in method according to claim 1, characterized in that: the preset time is 1-2 minutes.

9. The automatic brake caliper break-in method according to claim 1, characterized in that: the frequency of applying the pressure of the running-in wheel cylinder by the braking system is 8-12.

10. The automatic brake caliper break-in method according to claim 1, characterized in that: the application time of the wheel cylinder pressure in each break-in is 200-400 milliseconds.

11. The automatic brake caliper break-in method according to claim 1, characterized in that: and calibrating the pressure of the running-in wheel cylinder in the development stage of the ESC system.

Technical Field

The invention relates to the field of automatic running-in of brake calipers, in particular to an automatic running-in method of the brake calipers.

Background

At present, when a brake system is developed and maintained in a later period, only the abrasion of a friction plate is considered, and the performance of the brake system is inevitably reduced due to the possible brake clamping stagnation of a new vehicle in a running-in period, so that great potential safety hazards are generated. To eliminate these safety hazards, ESC systems are generally required to perform certain actions in certain scenarios, and in order not to affect normal driving behavior, these actions must be non-sensory, requiring precise calibration and compensation algorithms at a later time.

However, in the existing brake system, the deceleration response of the AEB system in the running-in period cannot meet the design requirements all the time, manual violent running-in is required before the standard test is performed, the running-in effect is poor, and the best effect is difficult to achieve.

Disclosure of Invention

The invention aims to provide an automatic brake caliper running-in method aiming at the defects of the technology, which can automatically complete the running-in of the brake caliper, ensure the braking efficiency, and has the advantages of safety, reliability and low cost.

In order to achieve the purpose, the designed automatic brake caliper running-in method calibrates the running-in wheel cylinder pressure in an ESC system, the ESC system drives the brake caliper to enable a friction plate to move towards a brake disc when applying the running-in wheel cylinder pressure, and when a vehicle runs within a running-in period mileage, if no braking request is made within a preset time and the vehicle speed is greater than a preset speed value, the ESC system intermittently applies the running-in wheel cylinder pressure for a plurality of times, and then the brake caliper returns.

Preferably, the ESC system drives the brake caliper to move the friction plate towards the brake disc when the running-in wheel cylinder pressure is applied, and a safe distance is kept between the friction plate and the brake disc, namely the friction plate does not influence the rotation of the brake disc and does not influence the normal running of the vehicle.

Preferably, when the ESC system applies the running-in wheel cylinder pressure, if the action stroke of the friction plate is too long, and the friction plate is attached to the brake disc, a supplement coefficient is introduced, and the running-in wheel cylinder pressure automatically reduces the supplement coefficient until a safe distance is kept between the friction plate and the brake disc after the ESC system applies the running-in wheel cylinder pressure.

Preferably, the ESC system intermittently applies the break-in wheel cylinder pressure for a plurality of times, resets the preset time after the brake caliper returns, and intermittently applies the break-in wheel cylinder pressure again for a plurality of times and repeats the cycle when the vehicle is within the break-in mileage, no braking request is made within the reset preset time, and the vehicle speed is greater than the preset speed value.

Preferably, the running-in mileage is less than 7500 kilometers of vehicle driving mileage, and the brake calipers are guaranteed to run in place.

Preferably, after the vehicle is replaced with the brake system assembly, the break-in mileage count is reset to enable the new brake system assembly to automatically break in.

Preferably, the first preset speed is 30-40 kilometers per hour, so that the influence on the running of the vehicle in the running-in process is reduced, and the running-in risk in a high-speed state is avoided.

Preferably, the preset time is 1-2 minutes, so that the brake caliper can be continuously run in, and the running-in effect is better.

Preferably, the frequency of applying the pressure of the running-in wheel cylinder by the brake system is 8-12, and the running-in effect of the brake caliper is improved by continuously starting the brake caliper for multiple times.

Preferably, the application time of the wheel cylinder pressure in each break-in is 200-400 milliseconds, and the break-in effect of the brake caliper is improved.

Preferably, the break-in wheel cylinder pressure is calibrated in the development stage of the ESC system.

Compared with the prior art, the invention has the following advantages:

1. the driver is actively helped to complete the running-in of the brake system in the running-in period, the vehicle is consistent with the response to the maximum extent, the performance state of the brake system is automatically optimized, the brake efficiency is guaranteed, the safety and the reliability are realized, and the safety of passengers is improved;

2. the brake calipers are automatically worn in, so that the hardware performance is optimized to prevent the subsequent insufficient brake loss from being enlarged;

3. the automatic running-in cost of the brake caliper is low and is close to the cost of 0;

4. simple and practical is applicable to all motorcycle types, can be mutual with various model ESC systems, can popularize the automatic break-in function of brake caliper to various motorcycle types of equipping ESC systems, the modularization operation.

Drawings

FIG. 1 is a schematic flow chart of the automatic brake caliper break-in method of the present invention.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1, the automatic brake caliper running-in method of the present invention calibrates a running-in wheel cylinder pressure in an ESC system, the ESC system drives the brake caliper to move a friction plate toward a brake disc when applying the running-in wheel cylinder pressure, and when a vehicle is traveling within a running-in period mileage, if there is no braking request within 1 minute and the vehicle speed is greater than 30 km/h, the ESC system intermittently applies the running-in wheel cylinder pressure 10 times, and the application time of the running-in wheel cylinder pressure is 300 milliseconds each time, and then the brake caliper returns.

When the ESC system applies the running-in wheel cylinder pressure, the brake caliper is driven to enable the friction plate to move towards the brake disc, a safety distance is reserved between the friction plate and the brake disc, if the action stroke of the friction plate is too long, the friction plate is attached to the brake disc, a supplement coefficient is introduced, the running-in wheel cylinder pressure is reduced by the supplement coefficient, and the safety distance is reserved between the friction plate and the brake disc until the ESC system applies the running-in wheel cylinder pressure.

In this embodiment, the running-in mileage is less than 7500 km, and in addition, after the vehicle is replaced with the brake system assembly, the running-in mileage count is reset.

In addition, the ESC system intermittently applies the running-in wheel cylinder pressure for 10 times, and the preset time can be reset after the brake calipers return, so long as the vehicle is within the running-in period mileage, no braking request is made within 1 minute, and the vehicle speed is greater than 30 kilometers per hour, the ESC system intermittently applies the running-in wheel cylinder pressure for 10 times, and the cycle is repeated.

In the embodiment, the pressure of the running-in wheel cylinder is calibrated in the development stage of the ESC system, and the suggested value of the pre-pressurization function of the ESC system can be referred to.

In the implementation of the embodiment, if a driver has braking action in an action interval of applying the running-in wheel cylinder pressure by the ESC system, the dynamic auxiliary braking mode after the pre-pressurization of applying the running-in wheel cylinder pressure by the ESC system is executed ensures better braking efficiency.

When the brake system assembly is replaced, as shown in fig. 1, firstly, default activation is performed through factory leaving or after the brake system assembly is replaced, a running-in period mileage count is set, when the mileage counter is greater than 7500 kilometers, the function is suspended, when the mileage counter is less than 7500 kilometers, whether braking action exists or not is monitored, when the braking action exists within 1 minute timing, the function is temporarily inhibited, when no braking action exists within 1 minute, the vehicle speed is monitored, when the vehicle speed is less than 30 kilometers per hour, the function is temporarily inhibited, when the vehicle speed is greater than kilometers per hour, the ESC system applies running-in wheel cylinder pressure for 10 times, the friction plate is pressurized through the brake caliper, and automatic running-in of the brake caliper is executed.

In the process of applying the running-in wheel cylinder pressure by the ESC system, if the friction plate is stuck to a brake disc due to the overlong action stroke of the friction plate, a supplement coefficient is introduced, the running-in wheel cylinder pressure is reduced by the supplement coefficient, and a safety distance is kept between the friction plate and the brake disc until the ESC system applies the running-in wheel cylinder pressure, so that safety is guaranteed.

According to the embodiment, the customer using the vehicle for the first time can automatically complete the running-in of the braking system, and the damage of the new user to the system due to violent running-in is avoided.

The automatic running-in method of the brake caliper mainly uses an ESC system as a main actuator, is mainly applied to all vehicles capable of supporting the ESC system, and can enable the ESC system to send an action signal to the brake caliper in a specific period by taking mileage and vehicle speed as judgment pointing signals in a running-in period of the vehicles, thereby automatically finishing the running-in of the brake caliper. According to the automatic brake caliper running-in method, the automatic running-in of the brake calipers is completed through the accurate action of the brake calipers in an automatic control mode under a specific scene, a driver is actively helped to complete the running-in of a brake system in a running-in period, vehicles are enabled to be consistent with responses to the greatest extent, and the safety of passengers is improved through the automatic optimization of the performance state of the brake system. And the customer who uses the car for the first time can accomplish braking system's break-in automatically, avoids the damage of new user's violence break-in to the system.

The invention is not only safe, practical, simple and reliable, but also can provide important safety function for customers under the condition of 0 cost or extremely low cost, so that the full-system vehicle type has higher safety guarantee, is convenient for the customers, prevents the interference of the driver to actively control the brake of the driver under the expected condition through sufficient safety design, greatly simplifies the running-in process on one hand, and on the other hand, a host factory autonomously masters the control mode of automatic running-in of the brake calipers, thereby saving the development cost of projects, increasing the autonomy and improving the safety of the driver.