Methane slip

Wärtsilä adds NextDF tech to its 25DF engine

Wärtsilä has introduced its NextDF feature for the Wärtsilä 25DF dual-fuel engine. While operating on LNG, the NextDF feature reduces methane emissions to less than 2% of fuel use across all load points, achieving as low as 1.1% in a wide load range. Additionally, the nitrogen oxide (NOx) emissions are lower than on the standard Wärtsilä 25DF engine which already has emission levels below IMO Tier III.

In 2023, Wärtsilä first introduced the new technology for its Wärtsilä 31DF engine. Thanks to...

https://www.marinelog.com/shipbuilding/engines-fuel/wartsila-adds-nextdf-tech-to-its-25df-engine/

Wärtsilä and Chevron Shipping partner to lower methane emissions from LNG carriers

In a marine industry first move to reduce methane slip, Wärtsilä has partnered with Chevron Shipping Company to convert one engine on each of six Chevron Transport Corporation LNG Carriers from dual-fuel (DF) to spark gas (SG) operation.

The conversions come after two years of collaboration between the two companies and are intended to reduce greenhouse gas emissions in support of Chevron Shipping’s broader efforts to reduce the carbon intensity of its operations.

LNG, when burned as a fuel,...

https://www.marinelog.com/technology/wartsila-and-chevron-shipping-partner-to-lower-methane-emissions-from-lng-carriers/

NYK Line orders MAN ME-GA engines with EGR for new LNG carrier quartet

Japan’s NYK Line has ordered MAN B&W ME-GA engines for four 174,000 cubic meter LNG carrier newbuilds. Each ship will have two 5G70ME-GA Mk. 10.5 engines and all eight engines will feature MAN Energy Solutions’ proprietary EGR BP (Exhaust Gas Recirculation ByPass) emissions-reduction technology.

“We developed this engine for easy application to most contemporary LNG carrier designs and, indeed, all ME-GA orders to date have been exclusively for this segment,” said Bjarne Foldager, head of...

https://www.marinelog.com/technology/nyk-line-orders-man-me-ga-engines-with-egr-for-new-lng-carrier-quartet/

MAN ES’ four-stroke engine project aims for 70% reduction in methane slip

German engine manufacturer MAN Energy Solutions (MAN ES) has revealed that it is developing an oxidation catalyst for four-stroke engines that will reduce methane slip by 70%.

The post MAN ES’ four-stroke engine project aims for 70% reduction in methane slip appeared first on Offshore Energy.

https://www.offshore-energy.biz/man-es-four-stroke-engine-project-aims-for-70-reduction-in-methane-slip/

New ultra-low emissions Wärtsilä 31DF cuts methane slip

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/

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