Real Driving Emissions in Extended Driving Conditions

Danilo Engelmann, Yan Zimmerli, Jan Czerwinski and Peter Bonsack
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Danilo Engelmann: AFHB, University of Applied Sciences TI, 2500 Biel-Bienne, Switzerland
Yan Zimmerli: AFHB, University of Applied Sciences TI, 2500 Biel-Bienne, Switzerland
Jan Czerwinski: CJ Consulting, 2562 Port, Switzerland
Peter Bonsack: Federal Office for the Environment (FOEN), Air Pollution Control and Chemicals Division, 3003 Bern, Switzerland

Energies, 2021, vol. 14, issue 21, 1-19

Abstract: The real driving emission (RDE) testing for certification of vehicles is performed in conditions that are well defined in legislation. For emissions inventories and for research, the influences of some extended driving conditions on emissions are an interesting issue. In the present work, some examples of RDE results from two common passenger cars with gasoline and diesel propulsion are given. The varying driving conditions were “winter/summer”, “mild/aggressive”, and “higher altitude/slop”. The driving conditions: “winter”, “aggressive”, and “higher slope/altitude” generally require more energy, cause higher fuel consumption, and therefore, higher CO 2 -emissions. The condition of “winter driving”, especially in the urban type of operation, may cause some longer phases with not enough warmed-up exhaust aftertreatment and consequently some increased gaseous emissions. The DPF eliminates the nanoparticles (PN) independently on the driving conditions. Nevertheless, the DPF regeneration has an influence on the CO 2 -normality of the trip. The CO 2 -normality primary tolerance range can also be exceeded with aggressive driving. The elaborated results confirm the usefulness of the existing legal limits for the driving conditions of RDE homologation tests.

Keywords: emissions at cold start; warm-up; RDE; portion of idling; stop & go (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: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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