Real-world gaseous emission characteristics of natural gas heavy-duty sanitation trucks

As compared to conventional diesel heavy-duty vehicles, natural gas vehicles have been proved to be more eco-friendly due to their lower production of greenhouse gas and pollutant emissions, which are causing enormous adverse effects on global warming and air pollution. However, natural gas vehicles...

Full description

Saved in:
Bibliographic Details
Published in:Journal of environmental sciences (China) 2022-05, Vol.115, p.319-329
Main Authors: Wang, Jiguang, Gui, Huaqiao, Yang, Zhiwen, Yu, Tongzhu, Zhang, Xiaowen, Liu, Jianguo
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Environmental Monitoring
Gaseous pollutant emission
Gases
Gasoline - analysis
Motor Vehicles
Natural Gas
Natural gas sanitation vehicle
PEMS
Sanitation
Vehicle Emissions - analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:As compared to conventional diesel heavy-duty vehicles, natural gas vehicles have been proved to be more eco-friendly due to their lower production of greenhouse gas and pollutant emissions, which are causing enormous adverse effects on global warming and air pollution. However, natural gas vehicles were rarely studied before, especially through on-road measurements. In this study, a portable emission measurement system (PEMS) was employed to investigate the real-world emissions of nitrogen oxides (NOx) (nitrogen monoxide (NO), nitrogen dioxide (NO2)), total hydrocarbons (THC), carbon monoxide (CO), and carbon dioxide (CO2) from two liquified natural gas (LNG) China V heavy-duty cleaning sanitation trucks with different weight. Associated with the more aggressive driving behaviors, the vehicle with lower weight exhibited higher CO2 (3%) but lower NOx (48.3%) (NO2 (78.2%) and NO (29.4%)), CO (44.8%), and THC (3.7%) emission factors. Aggressive driving behaviors were also favorable to the production of THC, especially those in the medium-speed range but significantly negative to the production of CO and NO2, especially those in the low-speed range with high engine load. In particular, the emission rate ratio of NO2/NO decreased with the increase of speed/scaled tractive power in different speed ranges. [Display omitted] Average speed-bin and the boxplot of gaseous emission factors of CO, THC, NO, NO2, and CO2 for both tested vehicles.
ISSN:1001-0742
1878-7320
DOI:10.1016/j.jes.2021.06.023