Challenges in the Use of Alternative Fuels: Solutions to handle Boil-Off Gas in Agricultural Machines

To meet the climate targets, it is necessary to reduce greenhouse gas emissions from all areas.
Liquefied Natural Gas (LNG), which consists largely of methane, can be produced sustainably
and it is suitable for mobile machines due to its high energy density. When storing LNG at
ambient temperatures, evaporation creates boil-off gas. Methane is a climate-damaging
greenhouse gas that must not be released into the environment. Therefore, in this paper,
concepts are developed and evaluated that enable the use of LNG in mobile machines without
blowing off gas during dormant periods. Using a simulation model, the components of the most
suitable concept for a combine harvester are selected and dimensioned.