本文简述了近年来美国内燃机车发展的新动向,其中包括发展单节大功率、高性能的机车,以实现用较少的机车重联牵引;加强对旧型机车的翻新改造;进一步提高机车运用率和降低能耗;采用新技术,如列车低恒速控制装置,满足用户的专门需要;机车制造厂家在新车订货不足的情况下,主动承揽机车维修和改进业务。 This article outlines the recent developments in the development of diesel locomotives in the United States. These include the development of high-powered and high-performance single-section locomotives in order to achieve traction with less locomotives, the retrofitting of older locomotives and the further use of locomotives Speed ​​and reduce energy consumption; the use of new technologies, such as train low constant speed control device to meet the special needs of users; locomotive manufacturers in the case of lack of new car orders, take the initiative to contract locomotive maintenance and improvement of business.