PMID- 35353983
OWN - NLM
STAT- MEDLINE
DCOM- 20220603
LR  - 20220603
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 831
DP  - 2022 Jul 20
TI  - Chemical kinetic investigation on NOx emission of SI engine fueled with 
      gasoline-ethanol fuel blends.
PG  - 154870
LID - S0048-9697(22)01963-5 [pii]
LID - 10.1016/j.scitotenv.2022.154870 [doi]
AB  - Understanding the nitrogen oxide (NOx) formation chemical kinetic mechanism and 
      analyzing the effect of relevant influence parameters are the effective strategy 
      for NOx emission control. Based on the essential role of ethanol-gasoline blends 
      among oxygenate alternative fuel, the experiments in a GDI (gasoline direct 
      injection) SI (spark ignition) engine and the chemical kinetic simulation were 
      carried out. According to the validated model, seven NO contributing reactions 
      and three reaction pathways were observed. Besides the thermal NO formation 
      pathway, two other pathways with N(2)O and NNH through NH-HNO-NO have 
      nonnegligible places in the high engine speed condition. As for the parameters, 
      initial temperature aggravates NO emission, initial pressure and ethanol fraction 
      inhibit NO, which influence it through thermal NO pathway and have slight impact 
      on the other two pathways. While with the increase of equivalence ratio (ER) from 
      0.5 to 1.0, ER promotes first and then resists NO formation, getting highest 
      emission when ER equals to 0.85. In a lean burn condition, the thermal pathway is 
      highly inhibited and the N(2)O pathway is sharply accelerated. Through current 
      work, NOx producing mechanism under high-speed condition is investigated 
      comprehensively, which not only completes the total NO formation pathways from 
      atmospheric N(2) but also provides reference for the designing and modification 
      of low harmful NOx emitting gasoline-ethanol engines.
CI  - Copyright (c) 2022 Elsevier B.V. All rights reserved.
FAU - Xie, Mingke
AU  - Xie M
AD  - State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan 
      University, Changsha 410082, China.
FAU - Li, Qingyu
AU  - Li Q
AD  - State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan 
      University, Changsha 410082, China.
FAU - Fu, Jianqin
AU  - Fu J
AD  - State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan 
      University, Changsha 410082, China. Electronic address: fujianqin@hnu.edu.cn.
FAU - Yang, Huiyong
AU  - Yang H
AD  - State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan 
      University, Changsha 410082, China.
FAU - Wang, Xun
AU  - Wang X
AD  - State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan 
      University, Changsha 410082, China.
FAU - Liu, Jinping
AU  - Liu J
AD  - State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan 
      University, Changsha 410082, China.
LA  - eng
PT  - Journal Article
DEP - 20220327
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Gasoline)
RN  - 0 (Vehicle Emissions)
RN  - 31C4KY9ESH (Nitric Oxide)
RN  - 3K9958V90M (Ethanol)
RN  - 7U1EE4V452 (Carbon Monoxide)
SB  - IM
MH  - Carbon Monoxide/analysis
MH  - Ethanol
MH  - *Gasoline
MH  - Nitric Oxide
MH  - *Vehicle Emissions
OTO - NOTNLM
OT  - Chemical kinetic analysis
OT  - Gasoline-ethanol fueled engine
OT  - NOx emission
OT  - Reaction pathways
COIS- Declaration of competing interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2022/03/31 06:00
MHDA- 2022/06/07 06:00
CRDT- 2022/03/30 20:00
PHST- 2022/01/12 00:00 [received]
PHST- 2022/03/04 00:00 [revised]
PHST- 2022/03/23 00:00 [accepted]
PHST- 2022/03/31 06:00 [pubmed]
PHST- 2022/06/07 06:00 [medline]
PHST- 2022/03/30 20:00 [entrez]
AID - S0048-9697(22)01963-5 [pii]
AID - 10.1016/j.scitotenv.2022.154870 [doi]
PST - ppublish
SO  - Sci Total Environ. 2022 Jul 20;831:154870. doi: 10.1016/j.scitotenv.2022.154870. 
      Epub 2022 Mar 27.