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Abstract Glancey, J.L., J. Hummel, A. Chirnside, S. Nobles, S. Chanpimol and A. Ravel. 2007. Bio-fuel emission measurements and potential environmental implications for the Mid-Atlantic Region. JEMREST 3:158-166 DOI: 10.4029/2007jemrest3no117 There has been a growing interest in the use of ethanol-diesel fuel blends (E-diesel) in heavy-duty vehicles as a means to reduce petroleum dependency, increase renewable fuels use, and reduce vehicle emissions. In this study, the transient smoke emissions characteristics of three fuels were examined: an E-Diesel fuel (O2Diesel^TM: 7.7vol% Biomass-Derived Fuel Grade Ethanol (ASTM D 4806), 0.6vol% of proprietary, ag-based additive co-solvent, and 91.7vol% No.2 Diesel (ASTM D 975)), a B20 Soy-Diesel blend, and a conventional No. 2 diesel on-road fuel. Measurements of smoke emissions using each fuel in two commercial vehicles were made with a light extinction opacity meter and the SAE J1667 snap acceleration test method. Opacity values from each engine were significantly reduced (p<0.05) in each treatment with both the E-Diesel and Soy-Diesel blends compared to No. 1 Diesel. In addition, opacity was significantly lower with EDiesel compared to Soy-Diesel. Overall, relative to conventional petroleum diesel fuel, snap acceleration smoke emission was reduced by 9% and 32% using the Soy-Diesel and E-Diesel fuels, respectively. These results indicate that as part of a comprehensive air quality improvement program for the Mid-Atlantic, E-Diesel can provide a cost effective tool for reducing diesel power vehicle emissions for both on- and off-road vehicles and power units. ><0.05) with both the e-diesel and soy-diesel blends compared to No. 2 on-road diesel. Email info@jemrest.org for full text

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