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简述了美国机车制造商及铁路运用部门为了满足日益严格的排放法规要求而进行的铁路机车低排放发动机的研究开发活动。这些活动主要包括 :对传统柴油机进行修改或优化设计 ,如加长行程 ,提高压缩比 ,采用电子燃料喷射等 ;开发气体燃料发动机 ,其中包括采用柴油引燃的双燃料发动机和纯烧天然气的发动机 ;开发能满足下一代高速铁路计划需要的燃气轮机车发动机
A brief description of R & D activities of low-emission locomotives for railroad locomotives by U.S. locomotive manufacturers and railway authorities in response to the increasingly stringent emission regulations. These activities mainly include: revising or optimizing traditional diesel engines such as lengthening the stroke, increasing the compression ratio, using electronic fuel injection, etc. Developing gas-fueled engines, including diesel-ignited dual-fuel engines and purely natural gas engines, Develop a gas turbine engine that meets the needs of the next generation of high-speed rail projects