AAAR 33rd Annual Conference
October 20 - October 24, 2014
Rosen Shingle Creek
Orlando, Florida, USA
Abstract View
The Use of Diesel, Biodiesel Combined and Selective Catalytic Reduction (SCR) After-Treatment System on Particulate Matter Emissions: A Dynamometer Test Bench
GUILLHERME C. BORILLO, Thiago O. B. Silva, Yara S. Tadano, Fabio B. Valebona, Penteado Neto, Denis Rempel, Lucas Martin, Carlos I. Yamamoto, Marcelo Nalin, Jacson Weber de Menezes, Flemming R Cassee, Sanja Potgieter-Vermaak, Ana Flavia L. Godoi, Ricardo H. M. Godoi, Federal University of Parana - Curitiba, PR, Brazil
Abstract Number: 359 Working Group: Combustion
Abstract The new emission control systems in combination with the use of biofuels bring new insights to the investigation of unregulated combustion emissions. This study has focused on the distinct particulate matter emission due to the use of Low-Sulfur Diesel (LSD), Ultra-Low-Sulfur Diesel (ULSD) or a blend of 20% soybean-biodiesel in ULSD (B20) on the engine equipped with Selective Catalytic Reduction (SCR) system. A bench dynamometer tests system was used following the European Steady Cycle (ESC) testing cycle. Soluble ions, PAH´s and Nitro-PAH´s, elementary composition, black carbon, the soot molecular reactivity and oxidative stress were analyzed using IC, GC-MS, EDXRF, Aethalometer (optical analysis), Micro-Raman and Electron Spin Resonanse, respectively, for the total particulate fraction. Gravimetric analyses were performed on segregated particulate matter and have shown that the combustion of ULSD generates more fine particles compared to the other fuels. Among all tested combinations, SCR+B20 promote the higher reduction of major ions particles. The results didn’t show significant difference for elemental concentrations and optical properties concerning the fuel and SCR system combinations. The higher and lower reactivity were observed for ULSD exhaust particles and B20 samples, respectively. The PAH’s and Nitro-PAH’s concentration are dependent of fuel composition and after-treatment system. SCR+B20 combination increased fivefold the oxidative stress of PM. Different approaches of the combination SCR-Fuels were discussed, presenting new concerns about the particulate matter and the effects in human health and environment.