Review of Motor Vehicle Exhaust Emissions Particulate Number Concentration: Regulatory Developments and Monitoring Technologies

WU Dan; SHEN Shangyi; LIU Jiaqi; CHOU Jia; ZHAO Hongda; ZHAO Xi; ZHANG Guocheng

doi:10.12338/j.issn.2096-9015.2023.0310

Volume 68 Issue 1

Jan. 2024

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Article Navigation > Metrology Science and Technology > 2024 > 68(1): 10-17

WU Dan, SHEN Shangyi, LIU Jiaqi, CHOU Jia, ZHAO Hongda, ZHAO Xi, ZHANG Guocheng. Review of Motor Vehicle Exhaust Emissions Particulate Number Concentration: Regulatory Developments and Monitoring Technologies[J]. Metrology Science and Technology, 2024, 68(1): 10-17. doi: 10.12338/j.issn.2096-9015.2023.0310

Citation:

WU Dan, SHEN Shangyi, LIU Jiaqi, CHOU Jia, ZHAO Hongda, ZHAO Xi, ZHANG Guocheng. Review of Motor Vehicle Exhaust Emissions Particulate Number Concentration: Regulatory Developments and Monitoring Technologies[J]. Metrology Science and Technology, 2024, 68(1): 10-17. doi: 10.12338/j.issn.2096-9015.2023.0310

Citation:

WU Dan, SHEN Shangyi, LIU Jiaqi, CHOU Jia, ZHAO Hongda, ZHAO Xi, ZHANG Guocheng. Review of Motor Vehicle Exhaust Emissions Particulate Number Concentration: Regulatory Developments and Monitoring Technologies[J]. Metrology Science and Technology, 2024, 68(1): 10-17. doi: 10.12338/j.issn.2096-9015.2023.0310

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Review of Motor Vehicle Exhaust Emissions Particulate Number Concentration: Regulatory Developments and Monitoring Technologies

doi: 10.12338/j.issn.2096-9015.2023.0310

Beijing Institute of Metrology/ National Quality Supervision and Inspection Center for Ecological & Environmental Products, Beijing 100029, China

Received Date: 2023-11-24
Accepted Date: 2023-11-28
Rev Recd Date: 2023-12-03

Available Online: 2023-12-08

Publish Date: 2024-01-18

Abstract

Abstract

Environmental particulate matter levels are closely linked to human health, with road traffic emissions being a significant source of urban particulate matter. As the mass concentration of particulates in vehicle exhaust approaches the measurement lower limit, the urgent need arises to develop more sensitive methods for measuring and evaluating particulate matter. Over the past two decades, motor vehicle particulate emissions have garnered increasing attention, leading to numerous changes in global emissions regulations. These include stricter standards, new indicators, and expansion to broader off-road applications, necessitating new requirements for real-time, highly sensitive, onboard instruments. The measurement of particulate matter number concentration serves as a crucial supplementary approach to evaluating vehicle emissions pollution. This paper reviews the evolution of this metric in relevant regulations and existing methods for measuring particulate number concentration in vehicle exhaust. It provides an overview of the principles and application ranges of both current and newly developed instruments, offering insights into the technical progression of measuring and evaluating particulate number concentration in motor vehicle exhaust emissions.
- metrology,
- motor vehicle exhaust emissions,
- particulate matter,
- quantity concentration,
- regulations,
- monitoring equipment

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References(40)

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