Transient Characterization of Automotive Exhaust Emission from Different Vehicle Types Based on On-Road Measurements

Previous works on real-world vehicle emission characteristics have mainly focused on the influences of fuel, speed, vehicle type, elevation, and other factors on vehicle emission quantity and components. However, few studies have investigated the transient trend of automotive exhaust emissions throu...

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Bibliographic Details
Published in:Atmosphere 2020-01, Vol.11 (1), p.64
Main Authors: Ma, Chao, Wu, Lin, Mao, Hong-jun, Fang, Xiao-zhen, Wei, Ning, Zhang, Jin-sheng, Yang, Zhi-wen, Zhang, Yan-jie, Lv, Zong-yan, Yang, Lei
Format: Article
Language:English
Subjects:
Acceleration
Air pollution
Automobiles
Carbon dioxide
Charged particles
Chemical reduction
Coolers
Diesel engines
Diesel fuels
Emission analysis
emission factor
Emission measurements
Emissions
Exhaust emission
Exhaust gases
Fluid filters
Gases
Gasoline
High speed
Humidity
Hydrocarbons
Laboratories
Low speed
Nitrogen compounds
Nitrogen oxides
Nucleation
particulate number concentration
Pollution monitoring
portable emission measurement system (pems)
Quality standards
Regions
Roads
Selective catalytic reduction
Superchargers
Test vehicles
Traffic congestion
transient emission characteristics
Vehicle emissions
vehicle exhaust emission
Vehicles
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Summary:Previous works on real-world vehicle emission characteristics have mainly focused on the influences of fuel, speed, vehicle type, elevation, and other factors on vehicle emission quantity and components. However, few studies have investigated the transient trend of automotive exhaust emissions through on-road measurements. The key objective of the present paper was to examine the transient characteristics of exhaust emissions from different vehicle types on the roads of Tianjin. To achieve the goal, a portable emission measurement system (PEMS) was employed to monitor emissions from selected test vehicles—private cars, passenger vehicles, and cargo vehicles. It was found that the high-emission points of test vehicles were mainly distributed in two regions: the high-speed region (speed > 70–90 km/h, vehicle-specific power (VSP) > 0 kW/t) and the medium-speed–acceleration region (20–30 km/h < speed < 60–90 km/h, 0 kW/t
ISSN:2073-4433
2073-4433
DOI:10.3390/atmos11010064