The W"artsil"a dual fuel engine capability enables ships to be operated on
either conventional liquid marine fuels (LFO, HFO or liquid bio fuel) or LNG.
The switch between fuels can be made seamlessly without loss of power or speed.
Such fuel flexibility enables compliance with emission regulations in controlled
areas, while giving operators the option of determining the fuel according to
cost and availability.
When operating in gas mode, the W"artsil"a 34DF engine is already compliant
with IMO Tier III regulations without any secondary exhaust gas purification
systems. Also, when fuelled by gas, the SOx and CO2 emissions are notably
reduced and smokeless operation is attained.
In liquid fuel oil mode, the W"artsil"a dual fuel engines are fully compliant
with the IMO Tier II exhaust emissions regulations set out in Annex VI of the
MARPOL 73/78 convention. The engine is able to operate efficiently and
economically on low sulphur fuels (<0.1% S), making it suitable for operation
in emission-controlled areas.
The W"artsil"a 34DF has also obtained certification of emission standard
compliance from the United States Environmental Protection Agency (EPA), which
further endorses the environmental compliance of this