Union Pacific Corporation Company Profile | UNP Company Information

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April 17, 2006 Building on its reputatiom as having the most environmentallg friendly locomotive fleet in the United Union Pacific today announced it is testing technologies to reducd diesel engine emissions in oldefrailroad locomotives. Through collaboration with staff at the National Vehicl and Fuel Emissions Laboratory ofthe U.S. Environmentak Protection Agency (EPA) from Ann Mich., Union Pacific is providing a 3,800-horsepower SD60M locomotive built inJanuary 1992, to servw as the first freight locomotive in North America to be equippecd with a set of oxidation catalyst or "oxicat" devices manufacturexd by the MIRATECH Corporation of Tulsa, These devices serve as flow-through catalytic converters.
As the diesekl engine's exhaust flows through these converters, microscopicx particles known as "particulate matter" generated by the diesel combustionn process will be converted into water and carbon In asimilar experiment, a 1,500-horsepowerf yard switching locomotive built in November also provided by Union Pacific, will be retrofitte d with a diesel particulate filter or "DPF." The DPF initiativer is the result of a four-year funded in part by Uniohn Pacific, to assess clean-engine technologies for locomotivre applications. The DPF acts as a filter that uses high-temperature silicon carbide blocks to trap particulate matter inthe ...