Ignition delay characteristics of dimethyl ether under low-to-medium temperature ranges - 文章详情页

作者：

Zhang, Hongguang (Zhang, Hongguang.) (学者：张红光) | Shi, Zhicheng (Shi, Zhicheng.) | Gao, Xiang (Gao, Xiang.) | Li, Jiazheng (Li, Jiazheng.) | Zhi, Shumei (Zhi, Shumei.)

收录：

EI PKU CSCD

摘要：

Effects　of　the　compressed　pressure　and　fuel　concentration　on　ignition　delay　of　DME　mixture　were　investigated　using　a　rapid　compressor　at　compressed　temperature　of　656-814　K,　compressed　pressure　of　1.2-3.5　MPa　and　equivalence　ratio　(φ)　of　0.83-1.25.　Kinetics　model　was　built　to　predict　the　ignition　delay　and　simulate　the　combustion　process　using　CHEMKIN-PRO　software,　meanwhile,　reaction　kinetics　analysis　was　conducted.　The　results　show　that　with　increasing　compressed　pressure　and　fuel　concentration,　the　first-stage　ignition　delay　decreases　slightly,　while　a　significant　decrease　in　the　total　ignition　delay　is　observed.　The　ignition　delay　of　DME　presents　well　known　negative　temperature　coefficient　(NTC)　and　which　is　noted　to　become　more　prominent　at　lower　compressed　pressure　and　fuel　concentration.　DME　mixture　presents　three-stage　heat　release　at　lean-fuel　(φ=0.83),　which　includes　low-temperature　heat　release　and　a　two-stage　high　temperature　heat　release.　Kinetics　analysis　indicates　that　the　first-stage　high　temperature　heat　release　is　mainly　caused　by　the　production　of　CO　from　CH2O,　and　the　reactions　produce　CO2　and　H2O　contribute　to　the　second-stage　high　temperature　heat　release.　©　All　Right　Reserved.

关键词：

Reaction kinetics Temperature Kinetics Fueling Association reactions Mixtures Compressors Ignition Fuels

作者机构：

[ 1 ] [Zhang, Hongguang]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Zhang, Hongguang]Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing; 100124, China
[ 3 ] [Shi, Zhicheng]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Shi, Zhicheng]Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing; 100124, China
[ 5 ] [Gao, Xiang]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 6 ] [Gao, Xiang]Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing; 100124, China
[ 7 ] [Li, Jiazheng]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 8 ] [Li, Jiazheng]Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing; 100124, China
[ 9 ] [Zhi, Shumei]College of Environmental and Energy Engineering, Beijing University of Technology, Beijing; 100124, China
[ 10 ] [Zhi, Shumei]Collaborative Innovation Center of Electric Vehicles in Beijing, Beijing; 100124, China

通讯作者信息：

张红光
[zhang, hongguang]college of environmental and energy engineering, beijing university of technology, beijing; 100124, china;;[zhang, hongguang]collaborative innovation center of electric vehicles in beijing, beijing; 100124, china

电子邮件地址：

zhanghongguang@bjut.edu.cn

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