Real-world comparison of probe vehicle emissions and fuel consumption using diesel and 5% biodiesel (B5) blend.
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 NO(x) 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.
Ropkins
Karl
K
Institute for Transport Studies, University of Leeds, Leeds, LS2 9JT, UK. K.Ropkins@its.leeds.ac.uk
Quinn
Robert
R
Beebe
Joe
J
Li
Hu
H
Daham
Basil
B
Tate
James
J
Bell
Margaret
M
Andrews
Gordon
G
D000393:Air Pollutants / Q000032:analysis*; D002245:Carbon Dioxide / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D005229:Fatty Acids, Monounsaturated; D005742:Gasoline; D006838:Hydrocarbons / Q000032:analysis; D009589:Nitrogen Oxides / Q000032:analysis; D010938:Plant Oils; D000074262:Rapeseed Oil; D001335:Vehicle Emissions / Q000032:analysis*
D000393:Air Pollutants; D005229:Fatty Acids, Monounsaturated; D005742:Gasoline; D006838:Hydrocarbons; D009589:Nitrogen Oxides; D010938:Plant Oils; D000074262:Rapeseed Oil; D001335:Vehicle Emissions; D002245:Carbon Dioxide; D002248:Carbon Monoxide