Technical Paper
Transient Emissions from No. 2 Diesel and Biodiesel Blends in a DDC Series 60 Engine
1996-05-01
961166
In this study the effect of blending biodiesel (methyl soyester) with conventional diesel on emissions has been investigated. A 1991 MC Series 60 engine was employed and emissions of NOx, CO, THC, and PM were determined using the heavy-duty transient test. The fuels tested were a reference diesel, 20%, 35%, and 65% biodiesel blends in the reference diesel, as Well as 100% biodiesel. These tests show that as the percent biodiesel increased, the NOx, emission increased, while THC, CO and PM decreased. For 35% biodiesel, the composite NOx emission increased by nearly 1% while the composite particulate emission decreased by 26% relative to the reference diesel. The NOx increase of 1% was found to be statistically significant at the 99% level. For 100% biodiesel, the composite NOx increased by 11% while PM was decreased by 66%. CO was reduced by 47% and total hydrocarbon by 44%.
