Methane emission from gas engines

A new report from Sintef Ocean shows that methane emission from gas engines is a declining problem. However, there is still a need for improvement in order to ensure major climate gains from conversion from diesel to LNG.

Gas ship

Sintef Ocean has published the report "GHG and NOx emissions from gas fueled engines" financed by, among others, the NOx Fund. The report shows that emissions of methane from gas engines have been considerably reduced in recent years. Photo: Ferus Smit.

Publisert 20.06.17


With the updated figures for methane emissions (CH4 slip), conversion from diesel to LNG reduces net greenhouse gas emissions.

New measurements and surveys conducted in this study document significantly lower emissions than previous surveys. However, in the case of low load on gas engines, there is still a potential for improvement.

CH4 slip increases when the engine is optimized for the lowest possible NOx emissions. Therefore, striving to balance the emission parameters is important.

Engine type is important for the emission profile, eg. high-pressure dual-fuel engines do not have methane emissions at all. The study therefore focuses on emissions from low-pressure engines.

Read the report:

GHG and NOx emissions from gas fuelled engines