PMID- 27745664
OWN - NLM
STAT- MEDLINE
DCOM- 20170216
LR  - 20181202
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 48
DP  - 2016 Oct
TI  - Gaseous emissions from compressed natural gas buses in urban road and highway 
      tests in China.
PG  - 193-199
LID - S1001-0742(16)30118-8 [pii]
LID - 10.1016/j.jes.2016.01.028 [doi]
AB  - The natural gas vehicle market is rapidly developing throughout the world, and 
      the majority of such vehicles operate on compressed natural gas (CNG). However, 
      most studies on the emission characteristics of CNG vehicles rely on laboratory 
      chassis dynamometer measurements, which do not accurately represent actual road 
      driving conditions. To further investigate the emission characteristics of CNG 
      vehicles, two CNG city buses and two CNG coaches were tested on public urban 
      roads and highway sections. Our results show that when speeds of 0-10km/hr were 
      increased to 10-20km/hr, the CO(2), CO, nitrogen oxide (NO(x)), and total 
      hydrocarbon (THC) emission factors decreased by (71.6+/-4.3)%, (65.6+/-9.5)%, 
      (64.9+/-9.2)% and (67.8+/-0.3)%, respectively. In this study, The Beijing city buses 
      with stricter emission standards (Euro IV) did not have lower emission factors 
      than the Chongqing coaches with Euro II emission standards. Both the higher 
      emission factors at 0-10km/hr speeds and the higher percentage of driving in the 
      low-speed regime during the entire road cycle may have contributed to the higher 
      CO(2) and CO emission factors of these city buses. Additionally, compared with 
      the emission factors produced in the urban road tests, the CO emission factors of 
      the CNG buses in highway tests decreased the most (by 83.2%), followed by the THC 
      emission factors, which decreased by 67.1%.
CI  - Copyright (c) 2016. Published by Elsevier B.V.
FAU - Yue, Tingting
AU  - Yue T
AD  - College of Water Sciences, Beijing Normal University, Beijing 100875, China; 
      State Environmental Protection Key Laboratory of Vehicle Emission Control and 
      Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, 
      China; Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
FAU - Chai, Fahe
AU  - Chai F
AD  - College of Water Sciences, Beijing Normal University, Beijing 100875, China; 
      Chinese Research Academy of Environmental Sciences, Beijing 100012, China. 
      Electronic address: chaifh@craes.org.cn.
FAU - Hu, Jingnan
AU  - Hu J
AD  - State Environmental Protection Key Laboratory of Vehicle Emission Control and 
      Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, 
      China.
FAU - Jia, Ming
AU  - Jia M
AD  - State Environmental Protection Key Laboratory of Vehicle Emission Control and 
      Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, 
      China.
FAU - Bao, Xiaofeng
AU  - Bao X
AD  - State Environmental Protection Key Laboratory of Vehicle Emission Control and 
      Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, 
      China.
FAU - Li, Zhenhua
AU  - Li Z
AD  - School of Environment, Tsinghua University, Beijing 100084, China.
FAU - He, Liqang
AU  - He L
AD  - State Environmental Protection Key Laboratory of Vehicle Emission Control and 
      Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, 
      China.
FAU - Zu, Lei
AU  - Zu L
AD  - State Environmental Protection Key Laboratory of Vehicle Emission Control and 
      Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, 
      China.
LA  - eng
PT  - Journal Article
DEP - 20160525
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (Air Pollutants)
RN  - 0 (Hydrocarbons)
RN  - 0 (Natural Gas)
RN  - 0 (Nitrogen Oxides)
RN  - 0 (Vehicle Emissions)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - China
MH  - Cities
MH  - *Environmental Monitoring
MH  - Hydrocarbons/analysis
MH  - *Natural Gas
MH  - Nitrogen Oxides/analysis
MH  - Vehicle Emissions/*analysis
OTO - NOTNLM
OT  - Compressed natural gas vehicles
OT  - Emission factors
OT  - Highway
OT  - Road tests
EDAT- 2016/10/18 06:00
MHDA- 2017/02/17 06:00
CRDT- 2016/10/18 06:00
PHST- 2015/07/07 00:00 [received]
PHST- 2016/01/18 00:00 [revised]
PHST- 2016/01/29 00:00 [accepted]
PHST- 2016/10/18 06:00 [entrez]
PHST- 2016/10/18 06:00 [pubmed]
PHST- 2017/02/17 06:00 [medline]
AID - S1001-0742(16)30118-8 [pii]
AID - 10.1016/j.jes.2016.01.028 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2016 Oct;48:193-199. doi: 10.1016/j.jes.2016.01.028. Epub 
      2016 May 25.