Combined emission reduction with efuels and advanced exhaust aftertreatment including the Catvap® technology

Authors

F. Rümmele, Fraunhofer ISE

Summary

In this poster presentation a Well-to-Wheel analysis will be shown, offering an overview from fuel supply based on renewable electricity (Well-to-Tank) to vehicle efficiency (Tank-to-Wheel). The data is based on the project SynLink including Direct Air Capture, Co-Electrolysis for CO2 and H2O and longterm stacktests. The CO2 emission re-duction potential of different Fischer-Tropsch fuel pathways will be described as well as the fuel utilization in an internal combustion engine with and without diesel oxidation catalyst and particle filter. Furthermore, the CatVap® technology will be presented in terms of the integration in a state-of-the-art commercial vehicle exhaust pipe and secondary emission reduction potential in standard driving cycles. In cold start World Harmonized Transient Cycle tests fuel savings of approx. 66% could be achieved compared to conventional thermal management methods based on the control of the engine, called rapid heat up mode. Finally, thermal management methods and the CatVap® heat input were combined resulting in fastest exhaust aftertreatment heat up with highest nitrogen oxide reduction potential with ammonia through downstream selective catalytic reduction.

The contribution will be presented in three sections 'Utilization of Fischer-Tropsch related fuels in an internal combustion engine', 'Potential to achieve lowest secondary emissions with the CatVap® technology', 'Well-to-Wheel approach for e-fuel evaluation'.