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本文为美国《ProgreSsive RailroadIng》杂志社撰写的一篇综述。文中全面概述了美国90年代机车的技术进步,其中包括微处理机控制和诊断,径向式转向架,交流传动技术的开发应用,新型的机车运用、维修人员的训练方式等。此外,还描述了当今美国铁路运输业中出现的一些新的动向,如铁路公司放弃机车主权,采取按运用小时付费的租用方式,裁减或出卖自己的机车维修工厂,机车生产厂及一些专业承包厂继续承揽机车翻新改造业务等。文中还提供了翔实的有关美国一级铁路内燃机车的保有量、运用率、总功率、年生产率、车龄结构等统计数据。
This article is an overview of the magazine ProgreSsive RailroadIng. This paper provides a comprehensive overview of the technical progress of the 90’s locomotives in the United States, including microprocessor control and diagnosis, radial bogies, the development and application of AC drive technology, new types of locomotives, and maintenance personnel training methods. In addition, some new trends emerged in the U.S. railroad transportation industry such as the abolition of railroad locomotive ownership by railway companies, the adoption of hourly fee-based leasing schemes, the reduction or sale of their own locomotive maintenance factories, locomotive manufacturing plants, and some specialized contractors Factory continues to contract locomotive renovation business. The article also provides detailed and informative statistics on the amount of possession, utilization, total power, annual productivity, age structure and other factors of U.S. first class diesel locomotives.