Questions and Answers

我最近想给我的爱车换轮胎．但听朋友说市面上有很多翻新轮胎，一定要认真识别，谨防上当．请问如何才能鉴别翻新轮胎和新轮胎呢？     

Questions and Answers

Q：我想给自已的爱车加装防盗器，但面对琳琅满目的品牌，请问应该如何选购？     

Questions and Answers

广州 刘小川 Q：夏天快到了，我想给自己的爱车配备一个车载灭火器，以防万一，请问使用车载灭火器应该注意些什么？     

Uestions and Answers

我的帕萨特1.8T开了两年多了，漆面有些细小的划痕并且部分地方似乎有点褪色，我想去做个封釉，朋友告诉我说打打蜡就好了，请问是打蜡好还是封釉好？可以两者结合吗？[编者按]     

Shenzhen and Automobiles

With total area of 2020 km~2 peopled by 3.35 million, Shenzhen is situated in the south of Guangdong Province of China, bordering on New Territories of Hong Kong in the south, overlooking the Daya Bay in the east, and meeting the Pearl River Estuary in the west. Designated as the first Chinese special economic zone     

Questions and Answers

我的车已经开了1年多了，淡知道刹车片是不是已经磨坏了，请向自己怎样才能判断刹车片的磨损情况。     

Present Situation and Forecast of Chinese Rubber and Tire Products

1 Status Quo of China Auto Rubber and Tire Industries 1.1 Rubber The application of special rubber with high performance in the auto industry has seen an increasing tendency in recent years. Along with the progress of the auto industry, auto engine is towards great power, but miniaturization, ambient temperature of engine is getting higher, requirements of emission control     

Tyre rolling kinematics and prediction of tyre forces and moments: part I – theory and method

A new method to describe tyre rolling kinematics and how to calculate tyre forces and moments is presented. The Lagrange–Euler method is used to calculate the velocity and contact deformation of a tyre structure under large deformation. The calculation of structure deformation is based on the Lagrange method, while the Euler method is used to analyse the deformation and forces in the contact area. The method to predict tyre forces and moments is built using kinematic theory and nonlinear finite element analysis. A detailed analysis of the tyre tangential contact velocity and the relationships between contact forces, contact areas, lateral forces, and yaw and camber angles has been performed for specific tyres. Research on the parametric sensitivity of tyre lateral forces and self-aligning torque on tread stiffness and friction coefficients is carried out in the second part of this paper.     

Tyre rolling kinematics and prediction of tyre forces and moments: part II – simulation and experiment

There are two aims for the second part of this paper: verifying the theory presented in the first part through parameter variation and comparison between simulation and experiment, and to study the effect of the belt structure on the cornering properties of radial tyres. Research has been carried out with a passenger car radial tyre and two different kinds of truck or bus radial tyres using both simulation and experiment. This second part of the paper shows that belt structure plays an important role in the generation of tyre forces and moments in addition to the effects of the tread stiffness and friction coefficients. The theory and method presented in this paper opens a new robust way to predict the tyre forces and moments from the tyre design and provides a reliable model for a generation mechanism.     

克莱斯勒Town and Country

这款看似陌生的车型其实有一个中国人熟悉的名字就是大捷龙,另一款国人熟悉的道奇凯领Caravan其实就是大捷龙的道奇姊妹版本。如今,这款车的2011款在美国发布了,新款传达了更为纯正的美国式设计元素、创新科技、强大的功能性以及全面呵护的标配安全装备。     

Gasoline and Diesel Production and Consumption by Automobile in Selected Years

In10,000tonsCrudeOilGasolineDieselYearProductionProductionConsumptionbyAutoProductionConsumptionbyAuto199615,7333,2812,8184,419809199716,0743,5182,9764,924873199816,1003,4652,9454,884922199916,0003,7413,1986,3021285200016,3004,1343,5547,0791451200116,3954,1543,5887,4851555200216,7004,3363,7557,7351709200316,9604,7704,0928,5121992Source:AutomotiveIndustryofChina(2004)Gasoline and Diesel Production and Consumption by Automobile in Selected Years…     

The status quo and development of large and medium buses in China

1. Large and medium bus market in 1998 (1)Production and sales growth witnessed Ever since the second half of 1993, Chinese large and medium bus market has been running at a lower speed. In 1998, things sounded better with the production     

The Development and Current Situation of Medium and Large Buses in China

1 A Brief introduction Production of medium and large buses in China started in the early 1950's with manufacturing plants mainly in Shanghai, Beijing and similar cities. The 1990s witnessed a rapid development of medium and large sized buses in China. Yangzhou Bus plant, for     

Stability and optimised H∞ control of tripped and untripped vehicle rollover

Vehicle rollover is a serious traffic accident. In order to accurately evaluate the possibility of untripped and some special tripped vehicle rollovers, and to prevent vehicle rollover under unpredictable variations of parameters and harsh driving conditions, a new rollover index and an anti-roll control strategy are proposed in this paper. Taking deflections of steering and suspension induced by the roll at the axles into consideration, a six degrees of freedom dynamic model is established, including lateral, yaw, roll, and vertical motions of sprung and unsprung masses. From the vehicle dynamics theory, a new rollover index is developed to predict vehicle rollover risk under both untripped and special tripped situations. This new rollover index is validated by Carsim simulations. In addition, an H-infinity controller with electro hydraulic brake system is optimised by genetic algorithm to improve the anti-rollover performance of the vehicle. The stability and robustness of the active rollover prevention control system are analysed by some numerical simulations. The results show that the control system can improve the critical speed of vehicle rollover obviously, and has a good robustness for variations in the number of passengers and longitude position of the centre of gravity.     

Development Trend and Status Quo of China’s Automotive Standard and Standardization

1. Management system The 1949-founded New China has witnessed the repeated evolvement of the management system of automotive standardization, corresponding to the reform and restructuring of government bodies responsible for the automotive industry administration of China. In 2001, the National Administration of Quality and Technical Supervision and the National Administration of Entry-Exit Inspection and Quarantine incorporated to form the new government named General Administration of …     

Opinions and suggestions from CAAM

China Association Automobile Manufacturers (CAAM) has put forward the following opinions and suggestions after making various investigations and studies on some important issues in the development of the auto industry, such as taxing-charging reform, market and environmental protection, etc..     

Objectives and Structure Officially Defined

The readjusted objectives and structure of the departments responsible for auto industries management of the State Administration of Ma-chinery Industry (SAMI) which is located in Beijing has officially been defined as follows. ●Objectives of Div. of Auto Industry Planning under Dept. of Planning and Develop-ment of SAMI ——Working out development strategies, en-     

Changes in the investment and the setup of production and sales in the auto industry

In 2002, the total investment in fixed assets of the auto industry was over 300 billion yuan. But the problems of investment scattering and insufficient R & D capabilities have not been resolved, which will restrain the healthy and orderly development of the auto industry.