Caterpillar launches new MaK engine platform

Developed with an emphasis on fuel savings, the platform was specifically designed to address industry requirements while maximising operators’ bottom line. Key product features include optimised engine performance as well as an efficient part load range, which can help to save up to 40 tons of fuel a year when operating at variable engine speed. Vessels typically operating at lower loads can save up to 60 tons of fuel per year by changing the operating mode from constant- to variable-speed.

The engine is said to be compatible with both traditional and modern mechanical systems as well as electric propulsion systems, and will be available in 6, 8 and 9 cylinder configurations offering ratings between 2,100kW and 3,150kW at 720 and 750 rpm. It combines technologies such as flexible camshaft, waste gate technology and cylinder bypass valve to support varied operational profiles of vessels at lowest smoke emissions, and is prepared for installation of SCR for low NOx emissions.

Caterpillar Marine senior product definition engineer Detlef Kirste said, “The reliability of the new MaK 25 E is assured, given that it is based on the legendary M 25 C platform. In addition to adding a 5% power increase and reducing the fuel consumption on this platform, we also engineered the M 25 E to capitalise on the synergies between the engine, vessel and propulsion system.”

“The M 25 E has a very high torque to speed ratio allowing operators to run their CP propellers at a reduced propeller shaft speed significantly increasing the propulsive efficiency and lowering fuel consumption,” said Jonas Nyberg Caterpillar Propulsion sales manager. “The improved load response also makes them the ideal engines for any demanding transient operations such as dynamic positioning.”