Effect of spark timing on performance of a hydrogen-gasoline rotary engine
Effect of spark timing on performance of a hydrogen-gasoline rotary engine
复制标题
火花正时对氢汽油转子发动机性能的影响
DOI：
10.1016/j.enconman.2017.05.064
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发表时间：
2017-09
影响因子：
10.4
通讯作者：
Xiaoyu Cong
中科院分区：
文献类型：
--
作者：
Teng Su;Chang Wei JI;Shuofeng Wang;Lei Shi;Jinxin Yang;Xiaoyu Cong
研究了点火正时对氢-汽油双燃料旋转式发动机性能的影响。为此，研制了一种配备双燃料喷油系统的改进型旋转式发动机。专门制作了电子管理模块(ECM)来控制燃油喷射、过量空气系数和氢气体积分数。在这项研究中，发动机以每分钟4500转的速度运行，歧管绝对压力(MAP)为35千帕。氢气体积占总摄入量的百分比分别保持在0%、3%和6%。当氢气体积分数改变时，汽油馏分也被调整以使混合物保持在化学计量比。对于特定的氢体积分数，点火正时从24°CA变化到42°CA BTDC(在上死点之前)，固定间隔为2°CA。试验结果表明，对于特定的氢气体积分数，随着点火提前的增大，最高燃烧压力和燃烧室温度增大，制动热效率先增大后减小。提前点火使火焰发展周期延长，火焰传播周期缩短，排气温度降低。周期变化在增大火花推进后先减弱后恶化。推迟点火正时后，HC和NOx排放均有所降低。点火提前对CO排放影响不大。
This paper aimed to study the effect of spark timing on performance of a hydrogen-gasoline dual-fuel rotary engine. For this aim, a modified rotary engine equipped with a dual-fuel port injection system was developed. An electronic management module (ECM) was specially made to command the fuel injection, excess air ratio and hydrogen volumetric fraction. In this study, the engine was operated at 4500 rpm with a manifold absolute pressure (MAP) of 35 kPa. Hydrogen volumetric percentage of total intake was kept at 0%, 3% and 6%, severally. When the hydrogen volumetric percentage was changed, the gasoline fraction was also adjusted to keep the mixture at the stoichiometric. For a specified hydrogen volumetric fraction, the ignition timing was varied from 24 to 42 °CA BTDC (before top dead center) with a fixed interval of 2 °CA. Experimental results showed that for a specific hydrogen volumetric percentage, the peak combustion pressure and chamber temperature were increased, brake thermal efficiency was first increased and then decreased with the increase of spark advance. Advancing spark timing caused the increased flame development period, the decreased flame propagation period and exhaust temperature. Cyclic variation was initially weaken and then deteriorated after raising spark advance. HC and NOx emissions were reduced after retarding spark timing. Spark timing had little effect on CO emission.
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影响因子：
7.4
作者：
C. Sayın
通讯作者：
C. Sayın
提高化学计量条件下氢汽油转子发动机的怠速性能
影响因子：
7.2
作者：
Su Teng;Ji Changwei;Wang Shuofeng;Shi Lei;Yang Jinxin;Cong Xiaoyu
通讯作者：
Cong Xiaoyu
影响因子：
10.4
作者：
Cao, Sunliang
通讯作者：
Cao, Sunliang
影响因子：
7.2
作者：
Cheolwoong Park;S. Lee;Gihun Lim;Y. Choi;Chang-gi Kim
通讯作者：
Cheolwoong Park;S. Lee;Gihun Lim;Y. Choi;Chang-gi Kim
影响因子：
5.3
作者：
C. Ji;Shuofeng Wang
通讯作者：
C. Ji;Shuofeng Wang