A Report on the State-of-Affairs on “Application of Multibody Computer Codes to Vehicle System Dynamics”

This report gives a preview to a state-of-the-art paper and a special session which are devoted to the problem of the applicability of multibody computer codes to vehicle system dynamics. These activities were initiated at the 11th IAVSD Symposium 1989 in Kingston, CAN, followed by a workshop in Herbertov, CSR, and to be reported at the 12th IAVSD Symposium in Lyon, 1991. The concluding documentation will be a special issue of the VSD journal. The status of this report is what has been achieved up to May 1991.     

长安悦翔发动机管理系统电路原理及故障诊断（续完）

6故障诊断 长安悦翔轿车的ECU有车载诊断系统。它能够时刻监控发动机与废气排放相关的传感器、执行器是否工作正常。来确保汽车排出的尾气符合环保法规。OBD系统一旦检测到与废气排放相关的零部件损坏。将通过组合仪表上的排放指示灯（故障指示灯）告知用户废气排放不合格，同时存储故障码，     

车用发动机H201型化油器部分结构的改进

在Q492型发动机上，试验研究了H201型化油器怠速配剂和怠速调节螺钉结构等对发动机双怠速（怠速和高怠速）时排放的影响。试验结果表明，通过优选化油器怠速配剂和改进怠速调节螺钉结构等，可使发动机双怠速的排放污染物含量大幅度降低，其中，CO含量低于0．5％，HC含量低于500×10-6。     

满足头部碰撞法规FMVSS 201U要求的内饰设计

介绍了美联邦头部碰撞法规FMVSS 201U的技术要求和实验方法;分析了内饰件的造型、吸能块的形式和布置、吸能材料的选择和吸能结构的设计等因素对内饰件头部碰撞保护性能的影响;根据该法规的具体要求提出了内饰件的设计准则,为针对FMVSS 201U的内饰件结构设计和系统开发提供依据.     

长安悦翔轿车电源／电器接线盒／搭铁点

长安悦翔轿车是重庆长安汽车有限责任公司于2009年3月18日推向市场的一款经济型中级轿车。进入市场以后，以时尚外观和极高的性价比，很快得到客户的一致好评，于5月28日在全国同步上市，是当前的紧销车型。目前推出市场的有舒适型、豪华型、尊贵型3款手动档车型，其配置如表1所示。     

长安悦翔发动机管理系统电路原理及故障诊断(Ⅰ)

长安悦翔轿车搭载的JL475Q7发动机,是在引进日本铃木发动机技术的基础上,与欧洲设计公司(德国FEV、奥地利AVL公司)合作并优化设计,采用塑钢进气歧管,滚流气道设计等多项专利技术,达到国Ⅳ排放标准,其发动机电控系统采用BOSCH的M7发动机管理系统.     

长安悦翔发动机管理系统电路原理及故障诊断（Ⅱ）

5长安悦翔轿车M7系统零部件介绍 5．1传感器部分 5．1．1进气压力／温度传感器（MAP-IAT） 5．1．1．1工作原理 在博世的Motronic M7系统中。IAT传感器与MAP传感器集成为一体，常被叫做“温度／压力传感器”。安装在进气歧管上，提供发动机负荷信息和进气温度信息。其外形及引脚说明如图7所示，特性曲线如图8所示。     

Measurement of soot oxidation with No<Subscript>2</Subscript>-O<Subscript>2</Subscript>-H<Subscript>2</Subscript>O in a flow reactor simulating diesel engine DPF

Understanding the mechanism of carbon oxidation is important for the successful modeling of diesel particulate filter regeneration. Characteristics of soot oxidation were investigated with carbon black (Printex-U). A flow reactor system that could simulate the condition of a diesel particulate filter and diesel exhaust gas was designed. Kinetic constants were derived and the reaction mechanisms were proposed using the experimental results and a simple reaction scheme, which approximated the overall oxidation process in TPO as well as CTO. From the experiments, the apparent activation energy for carbon oxidation with NO₂-O₂-H₂O was determined to be 40±2 kJ/mol, with the first order of carbon in the range of 10∼90% oxidation and a temperature range of 250∼500°C. This value was exceedingly lower than the activation energy of NO₂-O₂ oxidation, which was 60±3 kJ/mol. When NO₂ exists with O₂ and H₂O, the reaction rate increases in proportion to NO₂. It increases nonlinearly with O₂ or H₂O concentration when the other two oxidants are fixed.     

一汽“狂飙”

一汽人通过提升管理、加快产出,扩大销量,强化自主,扩大合作等一系列工作,赢得企业又好又快地新发展,使集团的销量、销售收入和利润登上历史的新巅峰。     

<TPL-PCRUN> Statement of methods

TPL-PCRUN is a software program for the dynamic interaction simulation of pantograph–catenary systems. In the benchmark, based on the finite element method, the catenary model was built and the pantograph was considered as a three-level spring–damper–mass system. Then, through the contact definition between pantograph and catenary, the coupled model of the pantograph and catenary system was established. The respective dynamic equations of motions were solved by the time integration method. Thus, the simulation results were obtained and submitted for the comparison with the other software. On the other hand, a standard model from EN50318 was established and analysed by TPL-PCRUN. The simulation results by TPL-PCRUN were remarkably consistent with the reference values given by EN50318. It was proved that the results by TPL-PCRUN can be reliable. Recently, the software has been updated and improved. Some new models and algorithms are proposed, including the rigid–flexible hybrid pantograph model, contact definition considering appearance characteristics of the contact surfaces, a fluid–solid coupling algorithm of the pantograph and catenary system, etc.     

汪玉春论“道”

当岁月将沧桑慢慢抹上他的额头与鬓角时,他的思想却日见成熟和丰满起来。对质量成本的密切关注,使得他成为了业内截至目前少有的精益推动者之一。