Rolls-Royce has signed a deal with Irish Rail to rebuild three MTU PowerPacks that are currently being used to power a Class 22000 railcar serving the Dublin – Cork route.

Under the contract, the PowerPacks will be reconstructed with new ZF EcoWorld transmissions.

The works are expected to make the PowerPacks more efficient and quieter, as well as offer up to 19% savings in both fuel consumption and CO2 emission.

Irish Rail chief mechanical engineer Peter Smyth said: “We have been seeking a more efficient drive solution and Rolls-Royce has advised us on what would be the perfect concept.

“Their calculations showed that we would be able to make significant fuel savings if we replaced the current gear transmissions with EcoWorld units from ZF.”

“We have been seeking a more efficient drive solution and Rolls-Royce has advised us on what would be the perfect concept.”

The MTU PowerPacks are compact drive system packages that include engine and transmission, as well as the solutions required for rail traction such as cooling systems and exhaust aftertreatment.

MTU has so far delivered over 6,800 PowerPacks to its rail customers across the globe.

Rolls-Royce Power Systems business unit rail business head Jürgen Blassmann said: “Today, what we do doesn’t stop at just selling a new engine to a customer – we provide him with a complete drive solution to suit his needs.

“Using our state-of-the-art simulation equipment and a hardware-in-the-loop test stand, we were able to design the best concept for the needs of Irish Rail.”

In February this year, Rolls-Royce secured a contract to provide MTU Series 4000 and Series 2000 engines to Knoxville Locomotive Works (KLW), an original equipment manufacturer of switcher and road-switcher diesel locomotives.

The engines will power KLW’s SE Series four and six-axle locomotive designs.

The retrofit is expected to make the PowerPacks more efficient and quieter, as well as offer up to 19% savings in both fuel consumption and CO2 emission.