The new addition to the MTU portfolio completed 3,000 hours on the test bench showing acceleration behaviour and performance similar to diesel engines. The new gas engine also meets IMO III emission standards with no additional exhaust gas treatment.

MTU gas engine

In 2018 Rolls-Royce will deliver the first certified MTU gas engines for commercial marine applications. The unit is suitable for explorer and displacement yachts

Engine manufacturer Rolls Royce has announced that the new MTU gas marine engine has successfully completed 3,000 hours on the test bench. The results confirm acceleration behaviour and performance similar to diesel engines, the company claims adding that it also meets IMO III emission standards with no additional exhaust gas treatment.

This environmentally friendly gas engine is set to go into series production as first high-speed pure-gas marine engine as of 2018.

Harbour tugs and ferries will get the first engines, however the new propulsion package is also suitable for leisure yacht applications.

“The new gas engine of the series 4000 (currently up to 2,000 kilowatts), could especially be interesting for explorer or displacement yachts, which can also be powered by the MTU diesel counterpart, the Ironmen engines of the MTU series 4000. The customer has to decide if the advantages of a gas engine, like its environmentally friendliness and its fuel cost saving possibilities compensate the setup of the gas infrastructure,” explains Peter Kunz, project manager mobile gas engine at MTU.

Low to zero emission
Future emission regulations will demand even more environmentally friendly propulsion systems than are currently available. In the case of the gas engine, health threatening substances in the exhaust gas have been reduced by 80%-100% compared with the diesel engine and greenhouse gases by up to 11%. The new MTU gas engine will meet the IMO III emission standards in force since 2016 with no additional exhaust gas treatment required, the company claims.

The 16-cylinder gas engine will cover a power range from 1,500 to 2,000kW and will be based on MTU’s proven 16V 4000 M63 diesel engine for workboats. As of the end of 2017, the first series engines will be used to power a tug built by Damen Shipyards for Svitzer towage and salvage company.

The gas engine portfolio will initially be supplemented by an 8-cylinder engine, which is to be available on the market with a power range of 750 to 1,000 kW.

Test bench.

The new MTU gas marine engine completed 3,000 on the test bench

Key feature
The new MTU gas engines will be equipped with a multipoint gas injection system, a dynamic motor management system and an advanced turbocharger.

The multipoint gas injection system is designed to provide the engine’s dynamic acceleration behaviour, increased performance and reduced emissions.

The competition concept ensures that the IMO III emission standards are met without the need for additional exhaust gas treatment.

Controlled combustion ensures that fuel is used efficiently. The safety concept, which has been optimised for gas operation, includes double-walled gas supply lines, which means that no additional complex safety precautions are required in the engine room.

On the test bench, it was possible to simulate real-life manoeuvres, which represented the dynamic acceleration behaviour of a diesel engine.

Rolls-Royce will be presenting the new MTU gas engine at the 2016 International Maritime Trade Fair (SMM). The event takes place in Hamburg from 6-9 September.