One tool for achieving fossil-free transport is to use renewable fuels. These can be used as a drop-in or replacement for current fuels in current engines and future engines made for renewables. Given that internal combustion engines are predicted to power 70 - 90 percent of new passenger cars and almost all heavy and marine transport by 2030 renewable fuels will play a crucial role in the conversion to fossil-free transport.
At Combustion and Propulsion Systems, we have long worked to investigate and compare innovative, renewable fuels based on efficiency, emissions and compatibility with current powertrains. All the way from modelling to experiments in hybrid systems we use and compare different renewable fuels.
Promising technologies include fuel flexible engines, new alternative fuels and biogas in combination with hybridization. Fuels such as HVO, biogas and ethanol are already available and other fuels that may become more common in the future include hydrogen, electrofuels and new mixtures of fuels. Hydrogen provision is currently being installed in our lab.
It is important to consider the lifecycle effects of these biofuels, for which we collaborate extensively with other departments and divisions. The goal is renewable fuels that are efficient, have low emissions and are produced sustainably.