Caterpillar is developing a dual-fuel version of another of its MaK medium-speed propulsion engines.
The M 34 DF is based on the M 32 C, with which it shares the footprint and major dimensions. It is rated at 500 kW/cylinder at 720 and 750 rpm in diesel and gas modes. Caterpillar claims that although designed for unlimited operation on LNG, marine diesel oil and HFO, the M 34 DF will reach industry-leading efficiency in gas mode.
First engine deliveries are foreseen for October 2014, in time for the January 2015 ECA fuel sulphur limit changes.
For Offshore Support and Small Cargo Vessels
With 340 mm bore and 460 mm stroke, the engine is aimed principally at the offshore support vessel and small cargo ship propulsion markets. It features new real-time combustion monitoring, flexible camshaft technology functionality with a lower valve train, and new monitoring systems for enhanced operational safety.
Picture: The M 34 DF are to become available as of October 2014, in time for the 2015 ECA limits.
