Assessment of a NOx Measurement Procedure for Periodic Technical Inspection (PTI) of Light-Duty Diesel Vehicles-Reference-Cited by-同舟云学术

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

Published:2023-07-21 Issue:14 Volume:16 Page:5520
ISSN:1996-1073
Container-title:Energies
language:en
Short-container-title:Energies

Author:

Franzetti Jacopo¹^ORCID,Selleri Tommaso¹²^ORCID,Ferrarese Christian¹^ORCID,Melas Anastasios¹^ORCID,Manara Dario¹,Giechaskiel Barouch¹,Suarez-Bertoa Ricardo¹^ORCID

Affiliation:

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

2. European Environment Agency (EEA), 1050 Copenhagen, Denmark

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.

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

Link

https://www.mdpi.com/1996-1073/16/14/5520/pdf

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