Wärtsilä Sees Pure Ammonia-Fired Engine by 2023 16 July 2021 The company already has a test engine running 'very well' on a 70% ammonia blend.Author: Capt. Johnhttp://feedproxy.google.com/~r/shipandbunker/~3/YgKyaVW-MOo/325210-wartsila-sees-pure-ammonia-fired-engine-by-2023