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Mass- and power-related efficiency trade-offs and CO2 emissions of compact passenger cars

  • Passenger cars in Europe have become both heavier and more powerful over the past decades. This trend has increased vehicle utility but it might have also offset technical improvements in powertrain efficiency. Here, we analyze efficiency trade-offs and CO2 emissions for three popular compact cars in Germany. We find that mass, power, and front area of model variants has increased by 66%, 147%, and 22%, respectively between 1980 and 2018. In the same period, fuel consumption decreased 14% for gasoline models but it increased 9% for diesel models. However, if vehicle mass, power, and front area had remained at 1980 levels, technical efficiency improvements would have decreased the fuel consumption of gasoline and diesel models by 23% and 24%, respectively. The related efficiency trade-offs amount to 24 g CO2/km or 13% of the current fuel consumption for gasoline models and 40 g CO2/km or 25% of the current fuel consumption for diesel models. These findings suggest that about half of the technical efficiency improvements in gasoline models and all of the technical efficiency improvements in diesel models are offset through other vehicle attributes. By accounting for the observed efficiency trade-offs, climate policy could become more effective.
Metadaten
Verfasserangaben:Martin Weiss, Lukas Irrgang, Andreas T. Kiefer, Josefine R. Roth, Eckard Helmers
URN:urn:nbn:de:hbz:tr5-1022
DOI:https://doi.org/10.1016/j.jclepro.2019.118326
Titel des übergeordneten Werkes (Englisch):Journal of Cleaner Production
Verlag:Elsevier
Dokumentart:Wissenschaftlicher Artikel (Fachzeitschriften)
Sprache:Englisch
Datum des OPUS-Uploads:03.09.2022
Datum der Erstveröffentlichung:07.09.2019
Veröffentlichende Hochschule:Hochschule Trier
Datum der Freischaltung:05.09.2022
Freies Schlagwort / Tag:CO2 emissions; climate policy; efficiency trade-offs; passenger cars; vehicle mass; vehicle power
GND-Schlagwort:Personenkraftwagen; Kohlendioxidemission; Klimaschutz
Jahrgang:243
Aufsatznummer:118326
Seitenzahl:10
Erste Seite:1
Letzte Seite:10
Einrichtungen:FB Umweltplanung/-technik (UCB)
DDC-Klassifikation:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik
Lizenz (Deutsch):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International