The United States Environmental Protection Agency (EPA) has awarded Wärtsilä’s 34DF dual-fuel engine family with model year 2017 certification for its emissions compliance.
According to Wärtsilä these are the first Category 3 Tier III certificates issued by the EPA to any manufac[ds_preview]turer. Category 3 relates to engines with a displacement per cylinder of greater than 30 l.
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.
The DF34 engines is manufactured in configurations from six to 16 cylinders covering a power range of 2,880 – 8,000 kW. Based on the Wärtsilä 32 diesel engine introduced in the mid-1990s, the 34DF‘s fuel flexibility means that the engine can be optimised for constant speed generating sets, as well as variable speed mechanical drives for main engine applications the manufacturer stated.
