Brake fluid replacement method, device, equipment and medium of integrated brake control system

By activating the electric cylinder pumping function through the OBD interface in the integrated brake control system, and in conjunction with the wheel caliper bleed screw, the problem of failure of traditional methods is solved, and efficient and accurate brake fluid replacement is achieved.

CN122402471APending Publication Date: 2026-07-17CHINA FAW CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA FAW CO LTD
Filing Date
2026-05-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional brake fluid replacement methods fail with integrated brake control systems (IBC), and how to achieve standardized operation without the need for specialized equipment has become a technical challenge.

Method used

The maintenance mode activation command is sent to the IBC-ECU via the OBD interface. The built-in electric cylinder pumps the brake fluid, and the brake fluid is automatically replaced by opening the bleed screws of the wheel calipers in sequence.

Benefits of technology

It improves the efficiency and accuracy of brake fluid replacement and enables standardized operation without the need for dedicated production line equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

本申请提供了集成制动控制系统的制动液更换方法、装置、设备及介质，包括：通过车载诊断接口向电子控制单元发送维护模式激活指令，使电子控制单元由行车控制模式切换至维护模式；在所述维护模式下，电子控制单元根据预设程序驱动内置电动缸执行自动往复运动，产生可控的液压脉冲流；按预设轮序依次开放各车轮卡钳的排气螺钉，使液压脉冲流推动制动液自主缸经液压回路从当前开放的排气螺钉排出；在每一轮排气过程中，电子控制单元控制电动缸完成预定次数的往复运动后暂停驱动，控制当前排气螺钉处于关闭状态并进入下一轮排气。实现无需专用产线设备、即可完成IBC售后制动液循环更换的标准化操作方法，提高制动液循环更换的效率以及准确性。
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