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Real-world Comparison of Probe Vehicle Emissions and Fuel Consumption using Diesel and 5% Biodiesel (B5) blend

Lookup NU author(s): Dr Joseph Beebe, Professor Margaret Carol Bell CBE

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Abstract

An instrumented EURO I Ford Mondeo was used to perform a real-world comparison of vehicle exhaust (carbon dioxide, carbon monoxide, hydrocarbons and oxides of nitrogen) emissions and fuel consumption for diesel and 5% biodiesel in diesel blend (B5) fuels. Data were collected on multiple replicates of three standardised on-road journeys: (1) a simple urban route; (2) a combined urban/inter-urban route; and, (3) an urban route subject to significant traffic management. At the total journey measurement level, data collected here indicate that replacing diesel with a B5 substitute could result in significant increases in both NOx emissions (8–13%) and fuel consumption (7–8%). However, statistical analysis of probe vehicle data demonstrated the limitations of comparisons based on such total journey measurements, i.e., methods analogous to those used in conventional dynamometer/drive cycle fuel comparison studies. Here, methods based on the comparison of speed/acceleration emissions and fuel consumption maps are presented. Significant variations across the speed/acceleration surface indicated that direct emission and fuel consumption impacts were highly dependent on the journey/drive cycle employed. The emission and fuel consumption maps were used both as descriptive tools to characterise impacts and predictive tools to estimate journey-specific emission and fuel consumption effects.


Publication metadata

Author(s): Ropkins K, Quinn R, Beebe JF, Li H, Daham B, Tate J, Bell MC, Andrews GE

Publication type: Article

Publication status: Published

Journal: Science of the Total Environment

Year: 2006

Volume: 376

Issue: 1-3

Pages: 267–284

ISSN (print): 0048-9697

URL: http://dx.doi.org/10.1016/j.scitotenv.2006.11.021

DOI: 10.1016/j.scitotenv.2006.11.021


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