共查询到20条相似文献,搜索用时 15 毫秒
1.
为了掌握车用电涡流缓速器的性能特性,研究了电涡流缓速器性能特性的综合评价方法。在介绍电涡流缓速器结构、工作原理的基础上,分析了车用电涡流缓速器性能特性与使用要求,提出了以缓速器的平均制动力矩、抗热衰退性系数、制动效能、单位质量制动效能、价格作为车用电涡流缓速器性能的评价指标,并且运用价值分析的方法对车用缓速器的性能特性进行了加权综合评价。从所举实例看,加权综合评价方法对比较各种电涡流缓速器性能的优劣,有着直观的可比性,得出的结果正确、可信。 相似文献
2.
介绍了车用转筒式电涡流缓速器的结构和工作原理,研究了车用转筒式电涡流缓速器制动力矩的计算方法,设计了一种额定制动力矩为1400N.m的转筒式电涡流缓速器,并且在试验台上测试了该缓速器有关性能参数。试验结果表明,该车用转筒式电涡流缓速器符合设计要求,设计实践为转筒式电涡流缓速器的优化设计和系列化设计提供了依据。 相似文献
3.
Design and use of an eddy current retarder in an automobile 总被引:1,自引:0,他引:1
In this study, the structure and working principles of an eddy current retarder acting as an auxiliary brake set is introduced
in detail. Based on the principle of energy conservation, a mathematical model was developed to design a retarder whose nominal
brake torque is 1, 900 N·m. According to the characteristics of the eddy current retarder, an exclusive test bed was developed
and used for brake performance measurements. The main technical parameters, such as the brake characteristics, temperature
characteristics and power consumption, were measured with the test bed. The test data show that the brake torque of the eddy
current retarder obviously decreased in the continuous braking stage and that there is a certain amount of brake torque in
the normal driving state because of the remnant magnetism of the rotor plate. The mathematical model could be used to design
an eddy current retarder. The exclusive test bed could be used for optimization of an eddy current retarder as well as for
R&D of a series of products. 相似文献
4.
5.
文章结合电涡流缓速器和再生制动能量回收技术的优点,提出了能量回收式电涡流缓速器制动补偿策略。利用再生制动系统提供的制动力矩为电涡流缓速器在持续制动过程中的制动力矩热衰退予以补偿。以GB12676-2014政策法规为验证标准,车辆在满载情况下在7%的坡道上保持以30km/h的车速匀速行驶5km为仿真目标,对某商用车型进行仿真分析。验证了该策略使得实际产生的总制动力矩始终能满足驾驶员的制动需求,可以延缓电涡流缓速器温升,保障车辆行车安全。 相似文献
6.
7.
提出利用联合制动系统将电涡流缓速器应用到铰接车辆上的方法。联合制动系统由拖车上的电涡流缓速器和挂车电控制动系统组成,二者在ECU控制下可以保证拖车与挂车制动力的合理分配以及对拖车及挂车的制动实施时间进行干预。采用该系统还可以减少铰接车辆行驶中某些事故的发生。 相似文献
8.
9.
针对城市客车安装DHZ100型电磁缓速器后制动性能的变化,用基于键合图模型的MATLAB/SIMULINK仿真分析方法对安装DHZ100型电磁缓速器的城市客车的制动性能进行了仿真分析。结果显示,安装DHZ100型电磁缓速器后,城市客车的制动性能得到提高,主制动器工作时间减少。 相似文献
10.
结合宁通客车电涡流缓速器的结构及工作原理,分析了电涡流缓速器的性能特点,进行丁性能测试及常见故障的诊断与排除。 相似文献
11.
车辆液力减速制动器设计和试验研究 总被引:5,自引:0,他引:5
研究了液力减速制动器循环圆腔室内油液流动的内特性,建立了用于内特性计算的数学模型;对液力减速器空气鼓风损失进行了研究。在此基础上,设计出采用新的减损结构措施的液力减速制动器样机。并进行了相应的台架试验。结果表明,液力制动力矩的理论设计值与试验值接近;减小液力减速器空转鼓风损失的结构措施具有理想的效果。 相似文献
12.
13.
为一种高效的汽车制动辅助装置,俗称"电刹"的电涡流缓速器是国际流行的第三制动系统,可以通过驾驶员手动或脚动实现制动。伴随着中国客车行业的不断发展,如今,以特尔佳缓速器为首的国内产品正在日益获得客车企业和用户的认可。 相似文献
14.
汽车电涡流缓速器的使用与维修 总被引:2,自引:0,他引:2
电涡流缓速器是一种辅助制动系统,是在现有的制动系统中增加一套作用于车辆传动系统中使车辆减速的安全辅助制动装置,它能够很容易地使乍辆缓速和恒速行驶,大大提高了汽车行驶的安全性与舒适性。介绍了汽车电涡流缓速器的性能特点、结构与工作原理、正确使用、维护及常见故障诊断等。 相似文献
15.
16.
17.
Hongpeng Zheng Yulong Lei Pengxiang Song 《International Journal of Automotive Technology》2017,18(3):387-396
Hydraulic retarders are auxiliary braking devices that reduce the velocity of a vehicle, particularly when a vehicle is driven downhill. Such velocity reduction could reduce the potential risk caused by brake failure caused by the service brake working for a long time and the temperature of the brake shoe becomes extremely high. This paper introduces the construction of the hydraulic retarder and proposes two mathematical models for the hydraulic retarder. The first mathematical model is deduced by using fluid mechanics, which is used to analyze the mechanism of how braking torque is produced and the key factors that can influence the value of the braking torque. The second mathematical model is deduced by using thermodynamics, which is used to quantify the heat produced by the hydraulic retarder. This research emphasizes that the flow rate and the average velocity of the working fluid in the working chamber mainly determine the braking torque of the hydraulic retarder. The flow rate into and out of the working chamber determines the temperature rise of the working fluid. Computational fluid dynamics (CFD) simulations are conducted with the Reynolds-averaged Navier-Stokes (RANS) and Shear Stress Transport (SST) turbulent models. Experiments are carried out to justify the two mathematical models and the CFD simulations. The results show that the mathematical models are capable of describing the force analysis and energy conversion of the hydraulic retarder and SST is more accurate for CFD simulation and the error is within 6 %. 相似文献
18.
当今汽车逐渐向大功率、高速度等方向发展,对汽车制动性能提出了越来越高的要求。为了减少交通事故,保证行车安全,有效利用发动机辅助制动技术显得尤为重要。本文通过分析发动机制动工作原理及其对汽车制动性能的影响,发动机缓速器和发动机排气辅助制动装置的结构特点、工作特性,提出了实施发动机制动的必要性和发动机制动技术运用要领。 相似文献
19.
20.
根据电磁制动与摩擦制动集成系统的工作原理,设计了一种电磁制动与摩擦制动集成系统测试台架.为检验该测试台架的性能.以某型轿车为对象.选择电磁制动器的磁极与制动盘间间隙、线圈匝数和磁极中心到制动盘中心距离为因素.进行3因素3水平正交试验.试验结果表明,采用所设计的测试台架对不同车型进行试验,可得到电磁制动与摩擦制动集成系统的最佳结构参数和安装参数. 相似文献