Wärtsilä introduced a new ultra-low emissions version of its ärtsilä 31DF engine. While operating on LNG, this new version is designed to reduce methane emissions on a 50 percent load point by up to 56 percent and nitrogen oxide (NOx) by up to 86 percent.
Author: Capt. John
https://www.marinelink.com/news/wrtsil-debuts-ultralow-emission-version-509193