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Measurement of Gaseous Exhaust Emissions of Light-Duty Vehicles in Preparation for Euro 7: A Comparison of Portable and Laboratory Instrumentation

Author

Listed:
  • Victor Valverde

    (European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy)

  • Yosuke Kondo

    (HORIBA Ltd., Shiga 520-0102, Japan)

  • Yoshinori Otsuki

    (HORIBA Ltd., Shiga 520-0102, Japan)

  • Torsten Krenz

    (HORIBA Europe GmbH, 42799 Leichlingen, Germany)

  • Anastasios Melas

    (European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy)

  • Ricardo Suarez-Bertoa

    (European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy)

  • Barouch Giechaskiel

    (European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy)

Abstract

The European Union’s ambition to reach climate neutrality and a toxic-free environment by 2050 entails, among other things, cleaner road vehicles. The European Commission’s proposal for the next regulatory emissions standard, Euro 7, requires the measurement of pollutants currently not regulated on the road. In this study we compared a prototype portable emissions measurement system (PEMS) measuring CO 2 , CO, NO, NO 2 , N 2 O, NH 3 , CH 4 , and HCHO based on infrared laser absorption modulation (IRLAM), and two Fourier transform infrared (FTIR) spectrometers with laboratory grade analyzers. To this end, one Euro 6d Diesel, one Euro 6d gasoline, and one Euro 4 gasoline vehicle were tested at −7 °C and 23 °C with various driving cycles covering traffic conditions to highway dynamic driving. The results demonstrated that the differences among the instruments were small: ±1 mg/km for HCHO, N 2 O, and CH 4 , ±2.5 mg/km for NH 3 , ±10–15 mg/km for NO x , ±50 mg/km or ±15% for CO (whichever was larger), and ±10–15 g/km for CO 2 . These values corresponded to <10–15% of the proposed Euro 7 limits or the emission levels of the tested vehicles. Our results confirm the feasibility of on-board systems to measure the conventional components including CO 2 and the aforementioned additional pollutants.

Suggested Citation

  • Victor Valverde & Yosuke Kondo & Yoshinori Otsuki & Torsten Krenz & Anastasios Melas & Ricardo Suarez-Bertoa & Barouch Giechaskiel, 2023. "Measurement of Gaseous Exhaust Emissions of Light-Duty Vehicles in Preparation for Euro 7: A Comparison of Portable and Laboratory Instrumentation," Energies, MDPI, vol. 16(6), pages 1-20, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:6:p:2561-:d:1091463
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    References listed on IDEAS

    as
    1. Barouch Giechaskiel & Pierre Bonnel & Adolfo Perujo & Panagiota Dilara, 2019. "Solid Particle Number (SPN) Portable Emissions Measurement Systems (PEMS) in the European Legislation: A Review," IJERPH, MDPI, vol. 16(23), pages 1-23, November.
    2. Ricardo Suarez-Bertoa & Tommaso Selleri & Roberto Gioria & Anastasios D. Melas & Christian Ferrarese & Jacopo Franzetti & Bertold Arlitt & Naoki Nagura & Takaaki Hanada & Barouch Giechaskiel, 2022. "Real-Time Measurements of Formaldehyde Emissions from Modern Vehicles," Energies, MDPI, vol. 15(20), pages 1-12, October.
    3. Barouch Giechaskiel & Alessandro A. Zardini & Tero Lähde & Michael Clairotte & Fabrizio Forloni & Yannis Drossinos, 2019. "Identification and Quantification of Uncertainty Components in Gaseous and Particle Emission Measurements of a Moped," Energies, MDPI, vol. 12(22), pages 1-17, November.
    4. Barouch Giechaskiel & Tobias Jakobsson & Hua Lu Karlsson & M. Yusuf Khan & Linus Kronlund & Yoshinori Otsuki & Jürgen Bredenbeck & Stefan Handler-Matejka, 2022. "Assessment of On-Board and Laboratory Gas Measurement Systems for Future Heavy-Duty Emissions Regulations," IJERPH, MDPI, vol. 19(10), pages 1-16, May.
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