At the beginning of next year the stricter IMO emission regime will come into force. Therefore engine manufacturers are obliged to develop environmentally friendly systems like dual-fuel engines. Some of them have presented novelties at the SMM
Bunker costs are a key factor for shipping companies. So they have to look for engines which consume less fuel[ds_preview]. This strategy also applies in case the specific vessel is only half loaded. In times of slow steaming, however, this is of negligible effect. Further requirements for today’s engines are reduced maintenance efforts and associated lower costs. W offers flexibility in power configurations for propulsion, auxiliary, genset and diesel electric applications. With ratings from 1,864 to 3,132 kW, the engine provides an ideal solution for high-hour, hardworking vessels such as tugs, towboats, offshore support vessels, passenger transport, dredgers, short sea cargo and coastal tankers.
The B33:45 is the new Bergen engine from Rolls-Royce which runs at 450-750 rpm as a marine propulsion engine. According to Rolls-Royce it is the first in-line engine that is produced with 6,7,8, and 9 cylinders at a power range from 3,600 kW to 5,400 kW. MTU has demonstrated the latest high-speed Series 4000 gas engine based on its trusted 4000 M63 diesel engine which is widely used for working vessels. The first field-trial engine is scheduled to enter service in 2016 in a new environmentally compatible tugboat. MTU’s natural-gas marine engine is to be launched on the market in 2018. Providing some 2,000 kW, the 16-cylinder version of the engine meets IMO Tier III standards.
The Japan based company Niigata Power Systems has shown the medium speed dual-fuel engine 28AHX-DF. According to Niigata the engine is environmentally friendly and in line with IMO Tier III NOx regulations. It uses clean gas combustion, making it possible to meet the new regulations without the need for an exhaust gas processing reactor.
Wärtsilä has introduced 46DF dual-fuel engine suitable for LNG carriers, cruise ships, RoRo/RoPax vessels, ferries or large offshore units. The engine can switch from gas fuel to HFO/MDO opera tion without loss of power and speed.
TWG
