United Kingdom, April 30 -- Technology group Wartsila has introduced its NextDF technology for a third engine, the Wartsila 46TS-DF dual-fuel engine. While operating on liquefied natural gas (LNG), the Wartsila 46TS-DF engine with NextDF feature reduces methane emissions to less than 1.4 percent of fuel use across all load points, achieving as low as 1.1 percent in a wide load range. This is nearly three times lower than the default methane slip factor of 3.1 percent, specified in the FuelEU Maritime and IMO Lifecycle Guidelines for Otto-cycle four-stroke dual-fuel engines. Through improvements made to the combustion control, and through optimising engine performance, the new feature also minimises nitrogen oxide (NOx) and CO2 emissions. em...