Knoxville Locomotive Works (KLW) ordered MTU Series 4000 and Series 2000 engines from Rolls-Royce. The engines will power KLW’s SE Series four- and six-axle locomotive designs, which were recently awarded EPA Tier 4 emissions certifications. The engines are produced at the MTU America facility in Aiken, South Carolina.
MTU Series 4000 and Series 2000 engines for rail applications feature very low exhaust emissions combined with low fuel consumption. The engines used by KLW comply with EPA Tier 3 emission regulations with no aftertreatment and require only minimal exhaust gas aftertreatment for compliance with the EPA Tier 4 limits. As a result of these technological prerequisites, the consumption of DEF (Diesel Exhaust Fluid) for further nitrogen oxide reduction is correspondingly low. The consumption for MTU’s Series 4000 and Series 2000 engines, for example, is less than 2.5 percent per gallon of diesel fuel, whereas other engines in the marketplace require 6 to 8 percent in order to meet EPA Tier 4 levels.
““Each KLW model uses a single engine drive train system consisting of either an MTU Series 4000 or Series 2000 high-speed engine powering a traditional intermediate speed AR-10 Series alternator,” Jim Wurtz, president of Knoxville Locomotive Corporation, said.
KLW is the only freight diesel locomotive manufacturer to achieve Tier 4 switch and line-haul certifications with single-engine prime-movers rated at 1,050 to 3,218 horsepower (783 – 2,400 kW).
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