WABCO气压盘式制动器

气压盘式制动器ADB（air disc brake）最早出现于20世纪90年代中期,能广泛应用于中重型车辆。它具有整体结构简单、重量轻、制动噪声小、散热快、制动间隙小以及维护简单等众多优于鼓式制动器的特点。目前ADB在欧洲发展迅速,挂车安装率超过50％,部分国家已经制定法规在公交车上安装使用。     

基于MAP的汽车电控制动系统变工况控制研究

为提高汽车电控制动系统(ECBS)在变工况条件下的实时控制精度,提出了基于MAP图的ECBS控制参数自寻优方法。首先建立基于部件特性的液压制动系统模型和ECBS控制器,在不同的车速下进行制动阶跃试验,应用模拟退火粒子群算法(SAPSO)自寻各工况下最优的PID控制参数,形成MAP图,车辆可根据实际车速和制动踏板力在线查MAP图获得控制参数。仿真和实车试验结果表明,基于MAP图的ECBS系统可有效缩短制动距离并改善制动时的方向稳定性。     

Non-asbestos Friction Materials Manufacturing in China--Present Situation and Future Prosperity

In the "Industrial Policy of the Motor Industry" which was published on Feb. 19, 1994, the Chinese Government focuses more attention on the development of auto parts industry aiming to adjust the industrial set-ups of auto parts industry, and foster and develop a number of backbone enterprises and striving for a greater progress in production scale, product development and production engineering in the end of the 9th Five-Year-Plan.CATARC has been authorized by the MMI to compose the contemplation and framework of the development of some key auto parts for the 9th Five-Year-Plan. The key auto parts are classified into 25 categories which are listed below:EFI system, spark plug, valve, tappet, piston & piston ring, bearing bush, turbo charger, diesel engine high-pressure pump, aluminium radiator, filters, diaphragm spring clutch, constant velocity universal joint, vacuum servo booster & master cylinder, non-asbestos friction materials, brake tube, brake hose, steering gear, steering ball joint, shock abs     

汽车气压盘式制动器的结构特点与性能分析

介绍了几种国内外重型汽车气压盘式制动器的结构及其特点,从左右轮制动力差异,制动器的效能因数与摩擦系数的关系及迟滞量等方面对盘式制动器与鼓式制动器进行性能对比分析,说明盘式制动器在制动效能、制动效能的稳定性以及制动时汽车的方向稳定性上比鼓式制动器具有明显的优势,理论和试验表明盘式制动器与ABS、ASR、EBS等系统匹配时可简化系统结构、优化系统性能,并对重型汽车装用盘式制动器带来的制动系统的相关问题进行了探讨.     

Car Retrofitting: Entering the Age of Spreading Individualization of Users

Along with the graduate increase of private cars, there are more and more demands for the individualization of them. According to an investigation, there are as much as 85% buyers who would put forward their demand for modifications and decorations of retrofit for the basic models and this has become a fashion.     

China''''s WTO Entry Prompts Gov''''t Reform

China's full World Trade Organization (WTO) membership, while ushering in a new era for its further opening to the outside world, makes it more urgent than ever to deepen governmental reform. The state is to forge a more open, transparent and competitive environment for the development of the national economy. China's WTO accession highlights the necessity of establishing a more mature market economic system. The old mode the government manages economic     

混合线控制动系统制动力精确调节控制策略

鉴于电子液压制动(electronic hydraulic brake,EHB)系统液压管路复杂且难以集成驻车制动,而电子机械制动(electronic mechanical brake,EMB)很难满足失效备份的需求,本文提出了一种前轴采用EHB,后轴采用EMB的混合线控制动系统(hybrid brake by wire system,HBBW),研究了EHB的双闭环压力跟随PI控制算法和EMB的三闭环制动力跟随PI控制算法,使其制动力能快速准确地跟随目标值。在此基础上,提出了混合制动系统的制动力精确调节PI控制策略,最后基于d SPACE Autobox和Car Sim搭建了HBBW系统的硬件在环(Hi L)试验平台,进行了Hi L测试与算法验证。结果表明,混合线控制动系统可有效地协调工作,实现四轮制动力快速、精确调节,从而提高车辆制动性能。     

Innovation and Practice of Hard Rock TBM in China（我国硬岩掘进机的创新与实践）

In recent years, with the help of good national policy support, the design, manufacturing and construction technology for tunnel boring machine (TBM) in China have been greatly improved; but compared with foreign relatively proven technology, there is still a certain gap for domestic technology development and engineering application. Based on the situation analysis of research and application of TBM in China and abroad, the research work for TBM design is carried out according to the complex geological conditions of Gaoligongshan Tunnel on Dali Ruili Railway as follows. (1) The prototype disc cutter rock breaking and scaled disc cutter wearing experiment are carried out to provide reference for adaptable design of TBM cutterhead and key parameter calculation. (2) The TBM design scheme is discussed from the aspects of high efficiency rock breaking of cutters and cutterhead, TBM over excavation, integrated support system, etc. (3) Two kinds of advanced geological prediction technology, i.e. HSP method and RTP method, are researched. The study results can provide reference for design and manufacture of TBM with high adaptability in complex geology and construction application in Gaoligongshan Tunnel.     

汽车盘式片热压成型方式的对比分析

介绍了我国现有汽车盘式制动片的3种成型方式和压制成型设备,并针对这3种成型方式压制成型的产品进行了测试分析.结果表明,采用单缸单腔等比压压制方式成型的汽车盘式制动片,其密度和压缩率均优于另2种压制方式成型的产品.介绍了一种基于等比压原理研制的新型盘式制动片的结构特点.     

苏州金龙客车前制动摩擦片指示灯报警故障2例

汽车采用钳盘式制动。可提高制动器耐热与防水性能,从而确保车辆制动的恒定性。故当代汽车的前制动很多都配置钳盘式制动器。有些后轮制动也配置钳盘式制动器。钳盘式制动器中。大部分都采用带常导通式传感器的制动摩擦片极限报警装置。2个指示接触点相互串联,