Wärtsilä said it has been awarded model year 2017 certification of emissions compliance from the U.S. Environmental Protection Agency (EPA) for its Wärtsilä 34DF dual-fuel engine family.
The EPA Tier III certification and the corresponding EIAPP certificate were both issued in March 2017. The Tier III certification of conformity covers the Wärtsilä 34DF engines manufactured from the date of issue until the end of 2017.
These are the first Category 3 Tier III certificates issued by the EPA to any manufacturer. Category 3 relates to engines with a displacement per cylinder of greater than 30 liters.
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.
For marine applications, the 34DF is manufactured in configurations from six to 16 cylinders covering a power range of 2,880 to 8,000kW. Based on the Wärtsilä 32 diesel engine introduced in the mid-1990s, the Wärtsilä 34DF’s fuel flexibility means that the engine can be optimized for constant speed generating sets, as well as variable speed mechanical drives for main engine applications. More than 300 34DF engines have been delivered globally.