8×4重型载货车制动性能研究与优化设计

Study and Optimization Design of Braking Performance of 8×4 Heavy-duty Cargo Trucks

防抱死制动系统(ABS)和电子稳定性控制系统(ESC)作为汽车重要的主动安全系统,GB 7258早已规定所有汽车均需配备ABS系统,随着JT-T 1178.1《营运货车安全技术条件》的实施,要求总质量大于等于12 t且车速超过90 km/h的载货汽车需配备ESC系统。论文针对4S/4M配置形式的ABS系统在8×4重型载货车上的应用,建立数学模型,基于整车制动性能特性,通过理论计算和试验验证,得出对于8×4载货车ABS轮速传感器布置于第2轴和4轴的合理性,车辆的制动性能和ESC性能都有很大提升。

Antilock brake system(ABS)and electronic stability controller(ESC)act as important active safety systems on vehicles.GB 7258 already mandates that every vehicle is supposed to be equipped with ABS system.With the implementation of JT-T 1178.1,Safety Specification for Commercial Vehicle for Cargos Transportation—Part 1:Goods Vehicle,cargo trucks with gross mass greater than or equal to 12 t and speed over 90 km/h are supposed to be equipped with the ESC systems.Aiming at the application of ABS system with the layout of 4S/4M on 8×4 heavy-duty cargo trucks,this paper establishes a mathematical model.Based on the braking performance characteristics of trucks,through theoretical calculation and experimental verification,it is concluded that the rationality of of the ABS wheel speed sensor for 8×4 cargo trucks arranged on the second and fourth axles,which can significantly increase the braking performance and ESC performance of the trucks.