Impact of Diesel/Biodiesel Blends on Emissions from a Diesel Vehicle Operated in Real Driving Conditions
Date Published: 2007-01-23
Paper Number:2007-01-0076
DOI: 10.4271/2007-01-0076
Citation:
Tzirakis, E., Karavalakis, G., Zannikos, F., and Stournas, S., "Impact of Diesel/Biodiesel Blends on Emissions from a Diesel Vehicle Operated in Real Driving Conditions," SAE Technical Paper 2007-01-0076, 2007, doi:10.4271/2007-01-0076.
In this study exhaust emissions from a commercially available motor vehicle with neat diesel fuel and diesel/biodiesel blends have been investigated. The vehicle was a EURO IV class with a turbocharged direct injection engine (TDI) of 2.0 liter displacement. Methyl ester obtained from used frying oil was as the blendstock at proportions of 5, 20, and 50 % by volume. On-board emission measurements were conducted in real-world driving on a specific driving route infrastructure including altitude differentiation, humps, and various alternations on driving conditions, such as frequent accelerations and decelerations. The addition of biodiesel demonstrated a decrease in NO
x
, CO and smoke opacity emissions. CO
2
emissions and fuel consumption showed an increase
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