Driving to save time or saving time to drive? The enduring appeal of the private car

Use of the private car is often viewed as highly problematic. It is regularly associated with global physical, social and ecological harms such as climate change and the high incidence of lifestyle diseases, including heart disease. Attempts to address these problems generally include provision for day-to-day physical mobility based on alternatives to the private car. Labelled alternative transport, these modes include public transport, walking and cycling. Yet the private car continues as the preferred way to travel in many cities. A deeper understanding of this preference can reveal under explored sites of resistance to alternative transport modes.This paper contributes to these understandings by examining the role the car as a time saving device plays in sustaining automobility. Its central proposition is that individual decisions to drive are not necessarily motivated by the desire to save time. The paper draws on empirical evidence on the journey to work in Australia’s largest city, Sydney. Using a systematic process of trip substitution analysis, a group of people were identified who could use alternative transport to get to work in the same amount of time it currently takes them to drive. These people then participated in a series of in-depth interviews where deeper attachments and motivations for private car use were explored.This approach has enabled development of the multi-layered understanding that informs the central proposition that individual decisions to drive are not necessarily motivated by the desire to save time. Instead, automobility is sustained by appeals to flexibility and autonomy, as well as the interminable pull of the sensory experience provided by the cocoon of the car. This way of thinking about resistance to alternative transport exposes a series of inconsistencies between the expectations of those planning for, and those anticipated to one day use, alternative transport.     

哈飞路宝正面碰撞安全性车身优化设计

针对哈飞路宝轿车车身设计的具体要求,建立了用于碰撞分析的整车车身结构简化有限元模型,并利用该模型对车身前部结构的几种设计方案进行了选择分析。利用计算机模拟技术对整车车身结构的有限元模型进行了模拟碰撞分析。模拟结果与实车碰撞试验结果的对比表明,所采用计算方法和模拟过程正确,提出的优化设计方案可以提高该轿车产品的被动安全性。     

轿车车内空腔声学模态试验研究

利用比利时Lms公司的Test_lab模态分析系统测量了某轿车车内空腔声学模态,采用Spectral Ac-quisition模块测量了声传递函数,用PolyMAX(最小二乘复频域法)分析方法进行了模态参数的识别。通过试验分析获得了该轿车车内空腔共鸣频率和三维模态形状。该方法为控制和降低轿车车内低频噪声提供了参考,为轿车车内空腔声学模态提供了简单易行的测试方法。     

车身产品开发过程中CAE分析的应用

通过车身开发过程中的CAE应用实例,详细介绍了在车身产品开发过程中的CAE分析流程、分析能力和解决方案。     

无证驾驶自动查处系统的设计与探讨

文章结合现有的无证驾驶查处方式带来的问题和弊病,基于智能交通系统的相关技术,介绍了无证驾驶自动查处系统功能模块的设计、安装及关键技术,为无证驾驶系统的研发提供参考。     

关于我国发展柴油轿车的几点思考

1976年春,德国大众汽车公司首次将1.5L、36.8kW自然吸气式发动机应用在高尔夫轿车上,从而掀开了现代轿车用柴油机发展的序幕。虽然起初人们不太接受这种曾被视为有些“粗野”的柴油发动机,甚至怀疑它的适用性,但随着科学技术的进步,现代柴油机在降低噪声和排放方面取得了巨大的     

功率谱在交通流混沌现象研究中的应用

文章主要研究交通流中的混沌现象问题.在交通流混沌现象的研究中,引入混沌研究的重要方法--功率谱的研究方法,作为对混沌现象的判断和分析依据.文中介绍了功率谱的定义、功率谱分析方法的特点,并对其计算原理和在实现过程中使用的函数加以详细的叙述.在其实现的方式和途径上,采用MATLAB作为计算工具,并通过一个仿真的实例,对整个分析过程加以详尽的说明.根据仿真结果,得出交通流中存在混沌现象的结论.     

计算机辅助测量汽车加速通过噪声的研究

本文介绍了计算机辅助测量汽车通过噪声的方法，利用计算机多媒体技术可全面真实地再现汽车加速过程中的各种信息及其相互关系，为控制汽车加速噪声提供了强有力的技术支持。     

奔驰轿车的行驶稳定性电子控制系统

电子稳定程序（ＥＳＰ）控制系统是一种在各种行驶条件下能提高车辆行驶稳定性的主动安全体系。ＥＳＰ控制模块根据输入信号确定在当前行驶条件下，以下６种工作模式中的一些应被接通，即普通模式、ＡＢＳ控制模式、ＡＳＲ控制模式、ＭＳＲ控制模式、ＥＳＰ控制模式及ＥＳＰ切断模式。     

丰田佳美轿车巡航(定速)控制系统的维修

介绍了日本丰田佳美轿车巡航（定速）控制系统的结构与原理。该系统通常具有巡航（定速）、惯性滑行、恢复车速、加速及点动增（减）速等功能。阐述了该系统代码故障的维修及未显示故障症状时的维修。