Abstract: The electronic brake system is an electronic control brake system, which combines conventional air brake and electronic brake. It is a great innovation in the field of vehicle active safety control in recent years which effectively improves the safety, comfort, and intelligence of vehicles. This paper introduces the main components and functions of the lectronic brake system, focusing on a domestic 4×2 truck, according to the test requirements of GB 7258—2017, GB 12676—2014 etc, the four functions of brake response time, deceleration control, emergency brake assist and external brake request are tested and analyzed, and compared with conventional air brake. The data show that the response time of the front and rear axles is significantly shortened and the braking safety is higher when the electronic brake system truck is assembled, and the deceleration of empty and full-loaded vehicles can fall on the target deceleration curve with high control accuracy. After activating the emergency brake function, the same pedal position will control the corresponding action components output greater braking pressure for braking; after opening the external request braking mode, the vehicle will brake according to the set deceleration, and the control deviation meets the requirements, and the braking deceleration control is good.

Key words: Electronic brake system; Response time; Deceleration control; Emergency brake assist function; Braking request; Commercial truck

摘要： 电子制动系统是将传统的空气制动与电子制动相结合的一种电子控制制动系统，是近 年来车辆主动安全控制领域的革新，有效提高车辆的安全性、舒适性、智能性。文章介绍了 电子制动系统的主要组成部分及功能，以某国产 4×2 载货车为对象，依据 GB 7258—2017、 GB 12676—2014 等标准的试验要求，对制动响应时间、减速度控制、紧急制动辅助、外部制 动请求 4 项功能进行测试分析，并与常规气制动进行比较。数据显示，装配电子制动系统载 货车型，车辆前、后轴制动响应时间明显缩短，制动安全性更高；空、满载车辆减速度均能 精准落在目标减速度曲线上，控制精度高；激活紧急制动辅助功能后，相同踏板位置将控制 相应的动作元件输出更大的制动压力进行制动；开启外部请求制动模式后，车辆会根据设定 的减速度制动，且控制偏差满足要求，制动减速度控制良好。

关键词: 电子制动系统；响应时间；减速度控制；紧急制动辅助功能；制动请求；商用载货车