Rolls-Royce has secured a new contract to supply MTU Series 4000 and Series 2000 engines to Knoxville Locomotive Works (KLW) in the US.

The two types of engines will be used to power KLW’s SE Series four and six axle locomotive designs, which are manufactured at the MTU America facility in Aiken, South Carolina.

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Knoxville Locomotive president Jim Wurtz said: “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.

“KLW chose MTU for its worldwide experience in developing highly reliable and clean diesel engines.

"KLW chose MTU for its worldwide experience in developing highly reliable and clean diesel engines."

“MTU engines are ideal for the application demands of switching and road-switching operations.”

MTU Series 4000 and Series 2000 products are high-speed engines featuring rotational speeds of up to 1,800rpm.

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The Series 4000 engines are available in 12V, 16V and 20V configurations for rail applications, while MTU Series 2000 engines are available in 12V and 16V variants.

Rolls-Royce MTU America Rail sales manager Michael Byrne said: “KLW’s robust network within the North American rail industry and its decision to commit to and invest in obtaining EPA certification makes the company one of the fastest growing locomotive builders in the industry.

“MTU is proud to be part of its Tier 4 solution and congratulates KLW on this significant industry milestone.”

Both engine types are noted for their low fuel consumption and exhaust emissions.

The freight locomotives currently manufactured by KLW adhere to EPA Tier 3 emission regulations with no aftertreatment.

They also require minimal exhaust gas aftertreatment to comply with EPA Tier 4 limits.

In addition, Rolls-Royce’s MTU Series 4000 and Series 2000 engines consume less than 2.5% per gallon of diesel fuel.