Local analysis and evaluation of innovative fuel-adaptive exhaust-gas abatement and aftertreatment strategies


The development of innovative fuel-adaptive exhaust-gas aftertreatment and abatement systems for low-temperature molecularly-controlled combustion requires detailed information about the local conversion rates of catalyst materials. Therefore, the main goal of this project is a profound understanding of physical transport mechanisms, which are responsible for efficiency limitation of multifunctional catalysts and catalytic piston surfaces. In this context, this project aims for highly-resolved data about concentration fields (of unburned hydrocarbons, CO, NO etc.) in the boundary layer of catalyst surfaces in dependency on composition, temperature and velocity of the exhaust gas. Results are utilized to determine locally resolved conversion-rate correlations to facilitate the design of novel catalytic systems (fuel-adapted monoliths, catalytic piston surfaces). Furthermore, suitability of innovative optimization concepts (e.g. microwave heating in case of cold start conditions or alternating multilayer catalysts) will be assessed.