BY IAN CAMERON For the first time, Rolls-Royce will be supplying MTU engines for use in excavators, having won an order from British construction equipment manufacturer JCB. MTU’s six-cylinder 6R1000 Series Stage 4/Tier 4 final compliant engines are to be used to power new excavators in JCB’s JS300, JS330 and JS370 series. The MTU brand is part of Rolls-Royce Power Systems. The 7.7L MTU diesel engine delivers 240 hp in the JS300 and 280 hp for the JS330 and JS370 models. The machines incorporate selective catalytic reduction (SCR) within the exhaust system, with dosing of a urea-based diesel exhaust fluid (DEF) to reduce NOx emissions by almost 90%, said JCB. This system allows the engine to meet Tier 4 Final without having to use a diesel particulate filter (DPF) and their introduction means fuel savings for customers of up to 10% on the three models, the company added.