Rolls-Royce has launched a V-Line version of its B33:45 engine series, designed to deliver 20% more power than the B32:40.
At 600kW per cylinder, the V12 is aimed at larger fishing vessels, drilling units, heavy lift and construction vessels as well as medium sized cruise and passenger, cargo and tanker vessels within the marine market.
Thor Humerfelt, head of engineering at Rolls-Royce, said: “This V-engine series completes the B33:45-engine family and gives our customers freedom to select their optimum power choice in the range between 3.6 MW and up to 12 MW. This will give them an excellent opportunity to reduce life cycle costs.”
The V12 delivers 7.2MW and is designed for both propulsion with fixed or CP propellers or as a generator set. 100% of the power can be taken out of either end of the crankshaft.
At 750rpm the fuel consumption at 100% load is 176g/kWh, and on propeller law specific consumption is 175g/kWh at 85% load.
The engine is designed for invisible smoke at low load and Rolls-Royce said that to ensure low emission levels and optimum thermal efficiency throughout the power range, variable inlet valve timing is used to optimise fuel economy and transient response.
The engine includes features for improved part-load performance and torque at lower loads.
It also has a modularised design to make servicing it easier and is designed for up to 30,000 running hours between major overhaul when operating at average loads within a specified window.
The pipe 2 connections to the built on pumps have been standardized and framed as a part of the front end module, enhancing the operational lifetime of bellows and connectors.
V12 is the first variant in the new V-series and will be followed by V16 and V20.
