Tailor-Made Fuels from Biomass – NO and temperature measurements in the center of an combustion flame using biofuels


Koß, Hans-Jürgen © Copyright: Lehrstuhl fuer Technische Thermodynamik der RWTH Aachen


Hans-Jürgen Koß

Vice Head of institute / Group Leader Measurement Systems Engineering


+49 241 80-95386



The Cluster of Excellence “Tailor-Made Fuels from Biomass”

The goal of the Cluster of Excellence Tailor-Made Fuels from Biomass (TMFB) is the interdisciplinary investigation of new synthetic fuels and chemicals generated from biomass. It aims at finding the best combination of selection and use of products and production processes. The research focuses on a holistic optimization with strong interaction of research projects in the fields of chemistry, engineering and economics.

Further information about the work and organization of the TMFB can be found here: http://www.fuelcenter.rwth-aachen.de



The high number of vehicles on our planet consumes an enormous amount of fuel. Indeed, more than 70 % of the 86 million barrels of crude oil that are consumed every day is used by combustion engines. In consequence of the high consume and thereby a high emission the risk for health is quite high, especially in cities. However, fuels are a compact and portable form of energy providing over 40 MJ per kg of fuel. In contrast, the batteries of electric vehicles have a low energy density. Therefore, combustion engines are still going to play an important role in the future. That is why research on this topic is still necessary.



Non-contact measuring techniques are a useful approach to get a better comprehension of the formation of emission. We use especially spontaneous Raman spectroscopy (SRS) and laser-induced fluorescence (LIF). At this project we will detect the position of the formation of emission and the dwell in the combustion process. The focus is on the formation of NO, which is one of the main pollutants in modern diesel engines.
Two reaction mechanism are mainly responsible for the formation of NO. Dependent of the temperature one NO mechanisms is active. Therefore, beside the position of the emission also the temperature is needed. One aim of this project is to measure these important parameters.


Project Details

Project Duration

until October 2017