United Kingdom, Sept. 10 -- Rolls-Royce is now introducing new, even more flexible and compact exhaust aftertreatment systems in combination with the 16-cylinder mtu Series 4000 engine for yachts, tugs, and ferries. The new generation of mtu SCR (selective catalytic reduction) systems requires up to 42 percent less space and weighs almost 40 percent less. Further advantages include an increased service life of the ceramic SCR material (substrate) to 18,000 operating hours (depending on the load profile) and a 15 percent reduction in life-cycle costs. Rolls-Royce will gradually offer the new generation of the mtu Flex SCR system for other mtu engines as well. Ships with integrated propulsion systems (mtu engines and SCR systems) in the power...