车载轮缘润滑系统

在小半径曲线上,轮缘润滑具有一系列优点.撇开对减轻轨道和车轮磨损的需求不谈,润滑起码可以减小轮缘与轨道面接触时产生的啸叫声.噪音现在已成了铁路环境必需考虑的一个重要因素.啸叫声是由摩擦转换成声音而产生的,所以润滑也可以降低燃油的消耗量.     

Spark Ignition Engine Idle Speed Control Using a Novel Framework and Enabling Control of the Tradeoff between Fuel Consumption and Load Rejection Capability

In this paper, a new framework for idle speed control is presented [The idle control methodology described paper is protected by international patent law]. A simple new discrete event based engine model evolving in the crank domain is given and is parameterized using a combination of dynamic identification and steady state calibration. The majority of the non-linearities can then be inverted and a second synthetic output is introduced. This second output is the torque reserve of the engine and enables control of the tradeoff between disturbance rejection capabilities and engine efficiency. A linear controller is designed using the H 8 loopshaping technique and results are presented from dynamometer based engine tests.     

信息通信--21世纪维修业的机遇

当您阅读这篇文章时,在美国加利福尼亚州公路网的某处,一辆汽车正在根据一项试验计划,将其车载诊断信息及排放信息传送给加利福尼亚州大气资源局的因特网监视系统。信息通信进入监测领域 从车辆传送到中央数据收集站的诊断信息及排放信息的应用,不仅向人们演示了目前正在使用的技术,而且还向人们展示了早期技术突破与未来技术的融合。毕竟,考虑到1981年推出的OBD I和1996     

A vehicle manufacturer's view of the potential for electric automobiles

In the search for low pollution, low noise, multi‐fuel vehicles capable of adapting to almost any source of energy available, the electric vehicle continues to be suggested in a variety of forms. In the long‐term view, working on the hypothesis that either solar or nuclear energy can provide the only inexhaustible energy supplies, electric propulsion will undoubtedly have a significant role to perform, and it could provide a useful means of transport in the transition period out of the current dependency on crude oil.

There are, however, some grave question marks hanging over the viability of electric vehicles on a large scale both in terms of their energy efficiency and practicality. This paper describes the state of development and discusses the future prospects.