Buses retrofitting with diesel particle filters. Real-word fuel economy and roadworthiness test considerations

Fleischman, Rafael; Amiel, Ran; Czerwinski, Jan; Mayer, Andreas; Tartakovski, Leonid (2018). Buses retrofitting with diesel particle filters. Real-word fuel economy and roadworthiness test considerations Journal of Environmental Sciences, 67, pp. 273-286. Elsevier 10.1016/j.jes.2017.09.011

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Retrofitting older vehicles with diesel particulate filter (DPF) is a cost-effective measure to quickly and efficiently reduce particulate matter emissions. This study experimentally analyzes real-world performance of buses retrofitted with CRT DPFs. 18 in-use Euro III technology urban and intercity buses were investigated for a period of 12 months. The influence of the DPF and of the vehicle natural aging on buses fuel economy are analyzed and discussed. While the effect of natural deterioration is about 1.2%–1.3%, DPF contribution to fuel economy penalty is found to be 0.6% to 1.8%, depending on the bus type. DPF filtration efficiency is analyzed throughout the study and found to be in average 96% in the size range of 23–560 nm. Four different load and non-load engine operating modes are investigated on their appropriateness for roadworthiness tests. High idle is found to be the most suitable regime for PN diagnostics considering particle number filtration efficiency.

Item Type:	Journal Article (Original Article)
Division/Institute:	School of Engineering and Computer Science > Institute for Energy and Mobility Research IEM School of Engineering and Computer Science
Name:	Fleischman, Rafael; Amiel, Ran; Czerwinski, Jan; Mayer, Andreas and Tartakovski, Leonid
Publisher:	Elsevier
Submitter:	Service Account
Date Deposited:	13 Nov 2019 10:39
Last Modified:	13 Nov 2019 10:39
Publisher DOI:	10.1016/j.jes.2017.09.011
Related URLs:	Publisher
ARBOR DOI:	10.24451/arbor.6755
URI:	https://arbor.bfh.ch/id/eprint/6755