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From diving and support vessels to LNG terminal tugboats and ... News Home Home | News Content Hub Home Back MTU upgrades engines to meet market demands 26 Aug 2011 by Riviera Newsletters Two of the Tognum Group’s two business units, MTU Engine and MTU Onsite Energy and Components, continue their aim to deliver integrated products which are efficient and envir... Two of the Tognum Group’s two business units, MTU Engine and MTU Onsite Energy and Components, continue their aim to deliver integrated products which are efficient and environmentally friendly. In addition to efficient engines, the company delivers highly integrated propulsion and onboard power solutions for traditional vessels and those with diesel-electric drive. The MTU diesel engine portfolio covers powers up to 9,100kW for a wide range of marine, industrial and traction applications. Products also include gas turbines and stationary fuel cell technology up to 345kW capacity. A major advantage is that Tognum also produces its own turbochargers and fuel injection equipment from its L’Orange operation. In-house integration of plant is therefore maximised with full integration of sequential turbocharging systems. With diesel-electric propulsion gaining increased favour with ship designers, MTU Friedrichshafen last year launched its new diesel genset packages at SMM in Hamburg. The standardised gensets are designed for both diesel-electric propulsion and power generation to supply ship electrical loads. The engine used is from the MTU Series 4000, with options of eight, 12 or 16 cylinders, covering a power range up to 2,240kW. These packages have been designed for flexibility in operation with high power output and low fuel consumption. The power management system is able to respond rapidly to changing propulsion power demands, thus allowing vessels to be both flexible in operation and demonstrate the high levels of maneuverability required in many electric drive applications. The system also works to optimise load distribution and keep fuel consumption to a minimum. Time between engine overhauls is maximised, as is the overall service life of the propulsion system. The result is a compact and flexible package which meets all current emission requirements and minimises maintenance downtime. With increasing demands for efficiency improvement, MTU has also developed its turbochargers to provide higher efficiencies and increased delivery pressures. With marine applications being an important market, all aspects of the design and installation also meet Solas requirements. The ZR turbocharger products are of compact construction with water-cooled casings and inboard bearings. MTU has also integrated turbocharger installations in the engine to minimise the space required for installation. The MTU turbocharger range includes the ZR125, ZR195 and ZR 205 products. The ZR265 is the largest and is capable of delivering up to 3.6 m 3 /second of air to the MTU 8000 Series engines it charges. The latest MTU engine designs use Miller valve timing to aim for the best possible fuel consumption and emission levels. Two-stage turbocharging, with controlled bypass of the high pressure turbine, ensures the supply of sufficient intake air, even under all operating conditions. The sequential arrangement also provides the engine with good dynamic response characteristics across the operating range. Tognum is continuing a technology drive to increase fuel efficiency and reduce exhaust emissions in all aspects of its business. The MTU business unit now has considerable experience with two-stage turbocharging and is further developing this for future products. Its latest ‘white paper’ on a future turbocharging strategy is now available on the company website. MTU has for many years worked with a range of technologies to meet stringent emissions standards, which has given the company experience in selective catalytic reduction (SCR) equipment. This has been demonstrated on the Series 2000 engines selected for fast ferries operating in the San Fransisco Bay, California, a location particularly sensitive to emissions. MTU has also taken the view that its recent upgrade of the Series 1163 marine engines should achieve IMO emission levels without the use of exhaust after treatment. The Series 1163 engine itself is a well proven unit and the latest package includes high-pressure two-stage turbocharging, a revised common rail injection system, new combustion processes and an ADEC electronic management system. MTU is also confident that IMO Tier III regulations, due to be introduced in 2016, can also be met by restoring SCR to existing designs. Series 1163 engines are available in 12V, 16V and 20V configurations and offer powers of 4,400-7,400kW from 230mm bore cylinders. Turbocharging is again sequential to provide efficient operation and rapid response to load demands. Maximum pressure ratio is 5.5 to 1 and fuel is injected at 1,800 bar. Rainer Breidenbach of the Tognum board said, “The 1163 family will be carrying on its success story and future versions will be even cleaner and more fuel efficient than the present engine generation.” MTU engine applications are broad and can be found in vessels from luxury yachts, passenger vessels and fast ferries to workboats. Their lightweight and robust construction also means that military and coastguard vessels use them too. The company recently secured an order for 60 16V 4000 engines for new Indian Coastguard patrol boats. MTU has also previously supplied 20 engines to the Korean Coastguard and has a fleet of engines operating with the US Coastguard. 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