Finnish technology group Wärtsilä has been awarded certification of emissions compliance from the United States EPA for its 34DF dual-fuel engine family.
The Environmental Protection Agency’s Tier III model year 2017 and the corresponding EIAPP certificate were both issued in March 2017.
Wärtsilä said the Tier III certification of conformity covers the Wärtsilä 34DF engines manufactured from the date of issue until the end of 2017, adding that these are the first category 3 Tier III certificates issued by the EPA to any manufacturer.
The certification verifies that the Wärtsilä 34DF engine is fully compliant with the EPA Tier III emission standards in gas mode operation.
As required by the EPA Tier III standard, the engine is equipped with a continuous nitrogen oxide (NOx) measuring and monitoring system for verifying emissions compliancy inside NOx Emission Control Areas (NECA). When sailing outside NECAs, the fuel-flexible 34DF engine can be operated with conventional marine diesel fuels if required, Wärtsilä said.