METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE OF A TRUCK OR OMNIBUS

The disclosure relates to a method for operating an internal combustion engine of a truck or omnibus, in particular a truck or omnibus with a permissible total mass of at least 3.5 tonnes, wherein (i) an electrolysis unit for the production of hydrogen, water is split into hydrogen and oxygen, (ii) a carbon dioxide sorption unit extracts carbon dioxide from the ambient air, (iii) the hydrogen and the carbon dioxide are fed to a methanol synthesis unit for the production of methanol, and are synthesised therein to methanol, (iv) a photovoltaic unit absorbs solar energy and converts it into electrical energy. The electrolysis unit, the carbon dioxide sorption unit and the methanol synthesis unit are powered by the electrical energy generated in the photovoltaic unit. The methanol produced is transported by means of a distributor system to at least one tank of the truck or omnibus, and is supplied from the tank as required to the internal combustion engine, and therein is combusted to generate mechanical energy.