Optimisation and validation of Plume Chasing for robust and automated NOx and particle vehicle emission measurements

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00385436" target="_blank" >RIV/68407700:21220/25:00385436 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.aeaoa.2025.100317" target="_blank" >https://doi.org/10.1016/j.aeaoa.2025.100317</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aeaoa.2025.100317" target="_blank" >10.1016/j.aeaoa.2025.100317</a>

Result language

angličtina

Original language name

Optimisation and validation of Plume Chasing for robust and automated NOx and particle vehicle emission measurements

Original language description

High-emitting vehicles comprise a small proportion (< 20 %) of the vehicle fleet, yet are responsible for the majority (> 50 %) of vehicle emissions. Plume Chasing is a reliable, high-precision measurement technique that derives emissions without interfering with the vehicle being tested. Its characteristics make it well suited for high emitter identification. In this study, the influence of several Plume Chasing measurement and data processing methods on the results of derived on-road NOx and particle fuel-specific emission factors are investigated. A range of vehicles, representative of a common vehicle fleet, were tested under different driving conditions on a test track. The derived results were evaluated against on-board SEMS (Smart Emission Measurement System) emission measurements. We found that one of the best performing Plume Chasing data processing methods is based on the use of a rolling minimum for background determination. The average absolute deviation of the determined NOx∕CO2 emission ratios from the reference was -0.2(46) ppm∕% for the heavy duty vehicle and 0.3(29) ppm∕% for the light duty vehicles tested. The methods were easy to automate and suitable for high emitter detection and quantification of emissions from two-wheeled vehicles. Inaccurate emission factors derived from Plume Chasing measurements occurred only in situations when emissions were significantly influenced by a strong plume from vehicles driving directly ahead of the vehicle of interest.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

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Continuities

R - Projekt Ramcoveho programu EK

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Atmospheric Environment: X

ISSN

2590-1621

e-ISSN

2590-1621

Volume of the periodical

25

Issue of the periodical within the volume

100317

Country of publishing house

GB - UNITED KINGDOM

Number of pages

23

Pages from-to

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UT code for WoS article

001424109100001

EID of the result in the Scopus database

2-s2.0-85216719777