Wärtsilä has unveiled a new methane slip reduction solution for its Wärtsilä 50DF dual-fuel engine, significantly enhancing its environmental performance. This innovation allows the conversion of Wärtsilä 50DF engines to spark gas operation, resulting in improved combustion efficiency and a remarkable reduction in methane emissions. The new technology aims to cut methane emissions by up to 75 percent compared to the standard Wärtsilä 50DF engine when operating on LNG. The Spark Gas Conversion technology employs an electrically controlled pre-combustion chamber valve, optimizing the combustion process further.
This innovative approach is projected to lower methane emissions to just 1.1 percent of fuel use on an IMO-weighted average (E2-cycle). Roger Holm, President of Wärtsilä Marine and Executive Vice President at Wärtsilä Corporation, emphasizes that utilizing LNG and reducing methane emissions is a crucial strategy for decreasing overall greenhouse gas emissions from marine engines over the next decade. The development of this solution stems from a partnership between Wärtsilä and Chevron Shipping Company, with one of the six Chevron LNG carriers set to convert one of its dual-fuel engines to spark gas. This initiative aims to reduce the carbon intensity of operations.
The Spark Gas Conversion is now accessible for all vessels equipped with existing Wärtsilä 50DF diesel-electric propulsion systems, predominantly LNG carriers. This new solution is specifically optimized for LNG, enabling better energy output per unit of fuel. Consequently, operators can expect fuel gas savings of up to 4.6 percent, alongside reduced methane emissions. Wärtsilä’s robust experience in LNG technology positions it as a leader in reducing methane slip through both new installations and retrofitting projects.
With three decades of expertise, Wärtsilä continues to advance solutions that enhance the sustainability of marine operations.