Emission Measurement of Buses Fueled with Biodiesel Blends during On-Road Testing

Séverine Cassiers, François Boveroux, Christophe Martin, Rafael Maes, Kris Martens, Benjamin Bergmans, François Idczak, Hervé Jeanmart and Francesco Contino
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Séverine Cassiers: FLOW & BURN, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
François Boveroux: FLOW & BURN, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussel, Belgium
Christophe Martin: Walloon Regional Transport Company, SRWT-TEC, Avenue Gouverneur Bovesse 96, 5100 Namur, Belgium
Rafael Maes: Hogere Zeevaartschool, HZS, Noordkasteel-Oost 6, 2030 Antwerpen, Belgium
Kris Martens: Karel de Grote Hogeschool, KdG, Salesianenlaan 90, 2660 Hoboken, Belgium
Benjamin Bergmans: Institut Scientifique du Service Public, ISSeP, Rue du Chéra 200, 4000 Liège, Belgium
François Idczak: Institut Scientifique du Service Public, ISSeP, Rue du Chéra 200, 4000 Liège, Belgium
Hervé Jeanmart: Institute of Mechanics, Materials and Civil Engineering iMMC, University of Louvain (UCLouvain), Place du Levant, 2, 1348 Louvain-la-Neuve, Belgium
Francesco Contino: Institute of Mechanics, Materials and Civil Engineering iMMC, University of Louvain (UCLouvain), Place du Levant, 2, 1348 Louvain-la-Neuve, Belgium

Energies, 2020, vol. 13, issue 20, 1-20

Abstract: Increasing the biodiesel content of diesel fuels is encouraged because of its reduced carbon footprint. Pure rapeseed methyl ester (RME)and used cooking oil methyl ester (UCOME) are characterised by well-to-tank greenhouse gas (GHG) reductions of 54% and 88% compared to pure B0 petrodiesel, respectively. Captive fleets such as public transport buses could benefit from these GHG reductions by increasing the biodiesel content of their fuel because they have a consequent yearly fuel consumption. The aim of this paper is to compare on-road tailpipe emissions of a diesel bus when increasing the biodiesel concentration in the fuel. The tests were carried out on a standard city bus belonging to the Euro V EEV emission standard that was equipped with a portable emission measurement system measuring NO, NO 2 , PN, CO and CO 2 at the tailpipe. The bus followed the SORT which is representative of urban bus driving. The heavy urban on-road measurements indicated increased NOx emissions (24–26%), decreased PN emissions (43–45%) and slightly decreasing CO emissions for B30 RME and UCOME compared to B7. A measurement uncertainty analysis showed that the CO emissions were less reliable. Similar conclusions were drawn for the easy urban on-road bus emission measurements with smaller differences between B7 and B30 RME and UCOME.

Keywords: biodiesel; PEMS; RME; SORT; transit bus; UCOME (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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