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Assessment of a NOx Measurement Procedure for Periodic Technical Inspection (PTI) of Light-Duty Diesel Vehicles

Author

Listed:
  • Jacopo Franzetti

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

  • Tommaso Selleri

    (European Commission, Joint Research Centre (JRC), 21027 Ispra, Italy
    European Environment Agency (EEA), 1050 Copenhagen, Denmark)

  • Christian Ferrarese

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

  • Anastasios Melas

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

  • Dario Manara

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

  • Barouch Giechaskiel

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

  • Ricardo Suarez-Bertoa

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

Abstract

A Periodic Technical Inspection (PTI) of vehicles promotes road safety and environmental protection. Indeed, a PTI is also used to verify the proper functioning of the vehicle’s aftertreatment system (ATS) over its lifetime. While the current Directive 2014/45/EU, which covers the PTI, does not require a NOx emissions measurement, the ongoing revision of the roadworthiness package aims at including new methods for measuring exhaust NOx and particle number (PN) emissions. PTI tests are required to be simple, quick, inexpensive and effective. In this study, a new methodology for a NOx measurement during the PTIs of Diesel vehicles equipped with a selective catalytic reduction (SCR) unit is assed. Seven Euro 6 light-duty Diesel vehicles fulfilling post-Real Driving Emissions (RDE) regulations were tested. The NOx-PTI methodology consists of measuring NOx emissions from the vehicle tailpipe at engine low idle speed after properly conditioning the vehicle ATS. In such conditions, a well-functioning SCR unit reduced NOx emissions and the methodology proved to be suitable to discriminate between functioning and malfunctioning SCR systems.

Suggested Citation

  • Jacopo Franzetti & Tommaso Selleri & Christian Ferrarese & Anastasios Melas & Dario Manara & Barouch Giechaskiel & Ricardo Suarez-Bertoa, 2023. "Assessment of a NOx Measurement Procedure for Periodic Technical Inspection (PTI) of Light-Duty Diesel Vehicles," Energies, MDPI, vol. 16(14), pages 1-11, July.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:14:p:5520-:d:1199015
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    References listed on IDEAS

    as
    1. Anastasios Melas & Tommaso Selleri & Ricardo Suarez-Bertoa & Barouch Giechaskiel, 2022. "Evaluation of Measurement Procedures for Solid Particle Number (SPN) Measurements during the Periodic Technical Inspection (PTI) of Vehicles," IJERPH, MDPI, vol. 19(13), pages 1-17, June.
    2. Tommaso Selleri & Christian Ferrarese & Jacopo Franzetti & Ricardo Suarez-Bertoa & Dario Manara, 2022. "Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors," Energies, MDPI, vol. 15(22), pages 1-12, November.
    3. Eugenio Fernández & Alicia Valero & Juan José Alba & Abel Ortego, 2021. "A New Approach for Static NOx Measurement in PTI," Sustainability, MDPI, vol. 13(23), pages 1-34, December.
    Full references (including those not matched with items on IDEAS)

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    1. Anastasios Melas & Tommaso Selleri & Ricardo Suarez-Bertoa & Barouch Giechaskiel, 2022. "Evaluation of Measurement Procedures for Solid Particle Number (SPN) Measurements during the Periodic Technical Inspection (PTI) of Vehicles," IJERPH, MDPI, vol. 19(13), pages 1-17, June.

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