浅谈陶瓷轴承的使用与维护

陶瓷轴承是一种高转速轴承,笔者通过陶瓷轴承的性能、结构、使用原则、代用方法、机床应用、维护保养、润滑以及延长陶瓷轴承寿命等方面详细地进行分析和论述,最后认为,陶瓷轴承各方面优点均比滑动轴承突出,并发展成为机械的主要支承形式,其应用范围越来越广。

浅谈非道路移动机械排放污染治理途径

众所周知,一直以来,我国的移动源污染控制主要着眼于机动车和船舶,《大气污染防治法》中只有关于"防治机动车船排放污染"的规定,而并不包括工程机械、农业机械等非道路移动机械的排放污染控制。近年来非道路车辆和机械发展迅速,污染物排放已呈快速上升之势。随着我国第一个非道路移动机械污染物排放国家标准的正式颁布执行,结束了非道路移动机械无控排放的状态,为全国非道路移动机械污染防治提供了有力的管理手段,拉开了非道路移动机械污染防治的大幕,使其排放污染治理引起了社会的广泛关注。

现代物流重卡的制动新技术透视

汽车的制动性能也是汽车的主要性能之一。针对防抱死制动系统是物流重卡的主动安全性配置,介绍了物流重卡电子控制制动系统改善制动性能防止车轮制动打滑,阐述了物流重卡的全电控制动系统是最高进化阶段,指出了物流重卡的发动机辅助制动系统使驾驶员更省心。

Effect of Polymer Network Morphology on the Performance of Polymer Dispersed Liquid Crystal (PDLC) Composite Films

The effects of the morphologies of liquid crystal (LC) droplets left in polymer network on the performance of polymer dispersed liquid crystal composite films were investigated.By adjusting the relative content range of the crosslinking and diluents,the morphologies of polymer network can be changed.Therefore,the properties of PDLC composite films with imparity polymer morphologies were obtained by experiments and the finite element simulation.Results of the experimental and finite element simulation showed that the electro-optical properties of PDLC composite films were inversely proportional to the domain size of the polymer network and the mechanical properties were proportional to the domain size of the polymer network.

Preliminary Ferrographic Study of the Wear Particles in Synovial Fluid of Human Knee Joints

The technique of ferrography has been applied to study the wear particles in synovial fluid of human knee joints. As a result some discrete, identifiable kinds of wear particles were found and various wear mechanisms, for example, adhesive wear, fatigue wear,etc. were revealed. Ferrographic techique may provide a method for early differential diagnosis, and prognostication concerning the future course of the disease.

汽车微机系统故障检测与分析

修理高档汽车最让人头痛的,就是汽车微机系统故障了。针对汽车微机系统故障首先要了解汽车微机的构成,然后对微机故障分析,以及特殊故障分析,介绍了轿车微机故障的检测和汽车微机故障诊断仪的应用方法,分析了我国市场上的主要解码器及其常见功能,提出了解码器使用的有关技巧和注意事项。

电动车辆动力电池的性能特点及其发展

在对目前用于电动车的各种电池性能特点分析的基础上,认为镍氢电池在电动车领域属于未来(3~5)年的过渡产品,动力锂离子电池将在(2~3)年后初步实现规模化,而燃料电池的商品化应用估计还需要10年~15年以上的时间。