Study on the effect of hydrogen addition to dimethyl ether homogeneous charge compression ignition combustion engine
Study on the effect of hydrogen addition to dimethyl ether homogeneous charge compression ignition combustion engine
复制标题
二甲醚均质充量压燃式内燃机加氢效果研究
DOI：
10.1063/1.4937139
复制
发表时间：
2015-12
影响因子：
2.5
通讯作者：
Zuohua Huang
中科院分区：
文献类型：
--
作者：
Yu Cheng;Xin Meng;Huibin Yu;Zuohua Huang
采用零维单区模型计算方法，研究了二甲醚(DME)/氢气/空气共混物（氢掺比为0% ~ 70%）在均质装药压缩点火（HCCI）内燃机中的自燃特性。所有模拟混合物在不同曲柄角度下均表现出两段放热现象。结果表明，加氢能延缓二甲醚在HCCI内燃机中的自燃时间。加氢对低温点火正时的影响较小，对高温点火正时的影响较大，负温度系数持续时间增大。化学动力学分析表明氢与二甲醚之间OH自由基的竞争可能是二甲醚低温反应减弱的原因。H2O2分子在1000 K左右分解并引发混合物的高温反应。
The auto-ignition characteristics of dimethyl ether (DME)/H2/Air blends (hydrogen blending ratio ranging from 0% to 70%) in homogeneous charge compression ignition (HCCI) combustion engine are investigated by calculation method using zero-dimension single-zone model. All the simulated mixtures demonstrated a two-stage heat release phenomenon at different crank angles. The results show that the hydrogen addition can retard the auto-ignition timing of DME in HCCI combustion engine. The ignition timing at low temperature is retarded slightly with the hydrogen addition, and the ignition timing at high temperature is delayed significantly due to the increased negative temperature coefficient duration. Chemical kinetic analysis reveals that the competition of OH radicals between hydrogen and DME could be the reason why the low temperature reactions of DME are mitigated. H2O2 molecules decompose at about 1000 K and initiate the high temperature reactions of the mixtures.
登录
查看更多内容
影响因子：
5.3
作者：
Yuchun Hou;Xingcai Lu;Linlin Zu;Libin Ji;Zhen Huang
通讯作者：
Yuchun Hou;Xingcai Lu;Linlin Zu;Libin Ji;Zhen Huang
影响因子：
7.2
作者：
T. Shudo;Hiroyuki Yamada
通讯作者：
T. Shudo;Hiroyuki Yamada
影响因子：
5.3
作者：
Zuo-hua Huang;Gen Chen;Chaoyang Chen;H. Miao;Xibin Wang;D. Jiang
通讯作者：
Zuo-hua Huang;Gen Chen;Chaoyang Chen;H. Miao;Xibin Wang;D. Jiang
影响因子：
4.4
作者：
W. Hwang;J. Dec;Magnus Sjöberg
通讯作者：
W. Hwang;J. Dec;Magnus Sjöberg
影响因子：
7.2
作者：
J. Jeon;C. Bae
通讯作者：
J. Jeon;C. Bae