This paper summarizes the technical development of the low-emission GE-7FDL series locomotive diesel engine. The development focused on reducing the engine exhaust emission significantly while reducing and curbing other visible and nonvisible emissions with minimal adverse impact on the engine fuel efficiency and minimal changes to the engine system and components. Concepts were analyzed, and were investigated using a single-cylinder 7FDL research engine. A low-emission 16-cylinder 7FDL engine and a GE locomotive prototype were built and tested for performance demonstration, function evaluation, and design optimization. The GE low-emission 7FDL engines and locomotives have been in production. The newly developed low-emission locomotive engine meets the EPA Tier-0 levels without fuel efficiency penalty. This was accomplished with minimal changes to the engine system and components. The desired engine reliability performance is retained. The engines are interchangeable with the preceding 7FDL baseline models, and the upgrade of the existing baseline engines to the low-emission version is facilitated.
Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine
Contributed by the Internal Combustion Engine Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE Division, Oct. 2001; final revision received by the ASME Headquarters, June 2002. Associate Editor: D. Assanis.
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Chen, G., Flynn , P. L., Gallagher , S. M., and Dillen, E. R. (April 29, 2003). "Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine ." ASME. J. Eng. Gas Turbines Power. April 2003; 125(2): 505–512. https://doi.org/10.1115/1.1563241
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