Browse Publications Technical Papers 2013-24-0059

Optimization of Diesel Combustion and Emissions with Tailor-Made Fuels from Biomass 2013-24-0059

In order to thoroughly investigate and improve the path from biofuel production to combustion, the Cluster of Excellence “Tailor-Made Fuels from Biomass” was installed at RWTH Aachen University in 2007. Since then, a variety of fuel candidates have been investigated. In particular, 2-methyl tetrahydrofurane (2-MTHF) has shown excellent performance w.r.t. the particulate (PM) / NOx trade-off [1]. Unfortunately, the long ignition delay results in increased HC-, CO- and noise emissions.
To overcome this problem, the addition of di-n-butylether (DNBE, CN ∼ 100) to 2-MTHF was analyzed. By blending these two in different volumetric shares, the effects of the different mixture formation and combustion characteristics, especially on the HC-, CO- and noise emissions, have been carefully analyzed. In addition, the overall emission performance has been compared to EN590 diesel.
The results show that an addition of DNBE to 2-MTHF can lead to a reduction of HC- and CO-emissions by 75 % and noise emissions up to 4 dB. Simultaneously, none of the benefits gained with 2-MTHF with regard to the PM-emissions are not sacrificed. It could be proven, that by blending two molecules that are derived from biomass, a tailor-made fuel can be designed that allows optimizing the diesel combustion according to the desired criteria.
In addition, both fuels were investigated in a High Pressure Chamber (HPC). Based on the results, new characteristic fuel numbers shall be developed in order to describe the combustion behaviour of the new fuels in a proper way, since the established ones are not sufficient to describe the combustion and emission performance of these fuels.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 16% off list price.
Login to see discount.
We also recommend:

3D CFD Modeling of a Biodiesel-Fueled Diesel Engine Based on a Detailed Chemical Mechanism


View Details


Modification of a Diesel Oil Surrogate Model for 3D CFD Simulation of Conventional and HCCI Combustion


View Details


Combustion Model for Biodiesel-Fueled Engine Simulations using Realistic Chemistry and Physical Properties


View Details