MAN high-speed 175D engine approved for operating on 100% biofuel

The MAN Energy Solutions 175D engine has been formally approved for running on biofuels, including hydrotreated vegetable oil (HVO) and fatty acid methyl ester (FAME) fuels up to a content of 100%. For ease of use, the engine does not need any technical changes to enable operation on clean fuels.

“MAN Energy Solutions prepares its engines for operation on future and sustainable fuels and the MAN 175D is no exception,” explained Florian Keiler, head of high-speed sales, MAN Energy Solutions.

“Several such units have been running on up to B30 biofuel in commercial, as well as governmental, applications for several years already where our experience has been very good and shown that the 175D does not suffer any loss in performance even when using these fuels.

“Due to its state-of-the-art design, just a few engine components are subject to slightly higher wear, depending on the amount of biofuel and the duration of operation. For uninterrupted engine operation, only minor adaptations of the fuel-treatment system are necessary.”

Due to the lower energy content of FAME fuels, the engine’s Maximum Continuous Rating (MCR) would drop if no correction measures were applied. To combat this, the company has designed a solution which enables the correction of the load by means of a Fuel Adaption Control to ensure full MCR power – even when operating with 100% FAME fuels.