Wärtsilä has introduced a new ultra-low emissions version of its Wärtsilä 31DF engine, first introduced in 2015. When operating on LNG, this new version of the dual fuel engine can further reduce methane emissions on a 50% load point by up to 56% and nitrogen oxide (NOx) emissions by up to 86%. On a weighted average, the engine’s new technology can reduce methane emissions by 41% more than the standard Wärtsilä 31DF engine, which is claimed to already have the lowest emission levels on the...
https://www.marinelog.com/technology/new-ultra-low-emissions-wartsila-31df-cuts-methane-slip/