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| 点火提前角对CNG发动机燃氢怠速性能的影响 | |
| 引用本文： | 何义团,安娜,邓蛟,Nashay Naeve,马凡华.点火提前角对CNG发动机燃氢怠速性能的影响[J].重庆交通大学学报(自然科学版),2011,30(2):311-314. |
| 作者姓名： | 何义团 安娜 邓蛟 Nashay Naeve 马凡华 |
| 作者单位： | 1. 重庆交通大学机电与汽车工程学院,重庆,400074;清华大学汽车安全与节能国家重点实验室,北京,100084 2. 重庆交通大学机电与汽车工程学院,重庆,400074 3. 清华大学汽车安全与节能国家重点实验室,北京,100084 |
| 基金项目： | 重庆市教委科学技术研究项目(KJ100423); 重庆市自然基金项目(CSTC,2010BB4264); 汽车安全与节能国家重点实验室基金项目(zz2010-062) |
| 摘 要： | 为了研究点火提前角θi对CNG发动机燃氢怠速性能的影响,在一台天然气发动机上进行了燃氢怠速性能试验.固定转速800 r/min,过量空气系数λ=2,θi从上止点前20℃A到0°CA变化.结果表明:随着θi减小,火焰发展期减小而快速燃烧期增加.当θi＞16°CA,大部分燃料在上止点前燃烧,负功增加,指示热效率低;θi=1... |
| 关 键 词： | CNG发动机 氢气 点火提前角 怠速性能 |
Effect of Ignition Advance Angle on Idle Performance of Hydrogen Fueled CNG Engine |
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| HE Yi-tuan,AN Na,DENG Jiao,Nashay Naeve,MA Fan-hua.Effect of Ignition Advance Angle on Idle Performance of Hydrogen Fueled CNG Engine[J].Journal of Chongqing Jiaotong University,2011,30(2):311-314. | |
| Authors: | HE Yi-tuan AN Na DENG Jiao Nashay Naeve MA Fan-hua |
| Institution: | HE Yi-tuan1,2,AN Na1,DENG Jiao2,NASHAY Naeve2,MA Fan-hua2(1.School of Mechatronics & Automotive Engineering,Chongqing Jiaotong University,Chongqing 400074,China,2.State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China) |
| Abstract: | To study the effect of ignition advance angle(θi) on idle performance of a hydrogen fueled CNG engine,an idle performance test was conducted on a hydrogen fueled CNG engine.The engine speed was fixed at 800r/min;the excess air ratio was set at λ=2 and θi was adjusted from 20℃A BTDC to 0℃A BTDC.The results demonstrated that as θi was reduced,the flame development angle decreased and the rapid combustion period increased.When θi>16℃A,most of the fuel was combusted before TDC;the negative power increased and the indicated thermal efficiency was rather low.When θi was around 10℃A,the indicated thermal efficiency reached its top value and the exhaust emissions were rather low.To a hydrogen fueled engine,the combustion conditions were not enough to produce certain amount of CO and HC under conditions of idle and lean burning;θi should be reduced properly to reduce NOx emissions. |
| Keywords: | CNG engine hydrogen ignition advance angle idle performance |
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