Assessment of On-Board and Laboratory Gas Measurement Systems for Future Heavy-Duty Emissions Regulations

Road transport contributes significantly to air pollution in cities. Regulations across the globe continuously reduce the limits that vehicles need to respect during their lifetimes. Furthermore, more pollutants are being subject to control with new regulations and, most important, testing tends to...

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Bibliographic Details
Published in:International journal of environmental research and public health 2022-05, Vol.19 (10), p.6199
Main Authors: Giechaskiel, Barouch, Jakobsson, Tobias, Karlsson, Hua Lu, Khan, M Yusuf, Kronlund, Linus, Otsuki, Yoshinori, Bredenbeck, Jürgen, Handler-Matejka, Stefan
Format: Article
Language:English
Subjects:
Air pollution
Analyzers
Chemiluminescence
Compressed gas
Diesel engines
Emission measurements
Emissions
Engines
Fourier transforms
Gases
Infrared analysis
Infrared lasers
Infrared spectrometers
Infrared spectroscopy
Laboratories
Lasers
Mercury cadmium telluride
Natural gas
Nitrogen
OEM
Pollutants
Pollution dispersion
Portable equipment
Principles
Quantum cascade lasers
Regulation
Regulations
Road transportation
Sensors
Spectrometers
Vehicles
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Summary:Road transport contributes significantly to air pollution in cities. Regulations across the globe continuously reduce the limits that vehicles need to respect during their lifetimes. Furthermore, more pollutants are being subject to control with new regulations and, most important, testing tends to be done under real-world conditions on the road. In this study, various portable systems were compared with laboratory-grade equipment with a wide range of emissions, focusing on the lower end, where the measurement uncertainty of the instruments is crucial for the determination of emission limits. The engines were diesel- and compressed natural gas (CNG)-fueled. The results were promising, with relatively small differences between portable emissions measurement systems (PEMSs), portable Fourier transform infrared (FTIR) and quantum cascade laser infrared (QCL-IR) spectrometers, and the respective laboratory-grade analyzers based on chemiluminescence detection (CLD), non-dispersive infrared (NDIR), and FTIR principles. The results also highlighted the need for strict technical regulations regarding accuracy and drift for low emission limits in future.
ISSN:1660-4601
1661-7827
1660-4601
DOI:10.3390/ijerph19106199