Clean Design Engine Production Skyrockets

Vice president offshore engines, Halvard Hauso has worked out the reduction of NOx emissions from all the Clean Design engines delivered or on order from Rolls-Royce. ‘The reduction will be about 4.6 million tons a year, he said. ‘This just about equals the yearly emissions from 500,000 cars (EURO3).

When the classification society DNV introduced the Clean Design requirements in 2005, Rolls-Royce had for some time been working on a project to reduce emissions of NOx. ‘Subsequently, we could sell Clean Design engines from day one’, said Hauso.

He expects that by 2009 about 90% of the offshore engines sold will meet the demands of the Clean Design requirements. ‘By then I am certain that IMO will reduce the level of NOx allowed to be emitted by a vessel, and most probably they will make the Clean Design limitations the next international standard’, he added.

Rolls-Royce delivers engines that meet the requirements for Clean Design vessels without the need for additional space consuming clean-up systems. The biggest challenge for the engine designers is to continue to reduce NOx emissions without increasing the use of fuel, and subsequently the CO2 emissions.

The Bergen B32:40 engine is the Clean Design engine type currently available. This year Bergen C25:33 engines meeting the same environmental standards will be included in the production schedule at the Rolls-Royce engine factory in Bergen, Norway.