Reduction of methane from LNG in diesel engines 

Purpose

To be able to identify the causes of the high emissions of unburned methane and assign the best ways to reduce unburned methane in the exhaust from ship engines.

Outcome of project

A mathematical model that describes the mechanisms responsible for unburned methane formation in MAN’s L28/32DF engine has been developed at DTU. This model has assisted in identifying how to reduce unburned methane emissions and fuel consumption significantly – according to the model by 41% at full load. The model can be used to investigate further how to reduce unburned methane emissions in MAN’s future DF engines.

A catalyst formulation has been identified that appears promising in comparison to catalysts reported in literature and available commercially. The critical property of the catalyst is its ability to resist deactivation from thermal impact (sintering at high temperature) while at the same time minimizing The potential of the catalyst will be further explored in collaboration with Haldor Topsøe with the aim of a commercial product that can help to control emissions of methane from maritime, dual-fuel engines.

Partners

  • DTU Mechanical Engineering
  • DTU Chemical Engineering
  • MAN Diesel & Turbo
  • Danish Technological Institute