| 电控顺序喷射CNG发动机过量空气系数研究 |
| |
| 引用本文： | 郭林福,张欣,李国岫.电控顺序喷射CNG发动机过量空气系数研究[J].小型内燃机与摩托车,2006,35(4):1-4. |
| |
| 作者姓名： | 郭林福 张欣 李国岫 |
| |
| 作者单位： | 北京交通大学机械与电子控制工程学院,北京,100044 |
| |
| 摘 要： | 分析了影响电控顺序喷射压缩天然气（CNG）发动机最佳过量空气系数（Фat）的主要因素。建立了CNG发动机试验台架，进行了过量空气系数对发动机经济性、动力性和排放性影响的试验。试验结果表明：过量空气系数对于CNG发动机经济性的影响非常明显，经济性最好时的过量空气系数大于NOx排放量最大时对应的过量空气系数，HC排放随着过量空气系数增大而增大，CO排放在过量空气系数为1．2到1．4之间时急剧下降，排气温度随过量空气系数增大而下降。该发动机的过量空气系数在1．5左右时其综合排放性能和经济性最佳。
|
| 关 键 词： | 压缩天然气发动机 过量空气系数 多点顺序喷射 |
| 文章编号： | 1671-0630（2006）04-0001-04 |
| 收稿时间： | 2006-04-30 |
| 修稿时间： | 2006年4月30日 |
Research of Excess Air Ratio of Sequential Injection CNG Engine |
| |
| Guo Linfu,Zhang Xin,Li Guoxiu.Research of Excess Air Ratio of Sequential Injection CNG Engine[J].Small Internal Combustion Engine and Motorcycle,2006,35(4):1-4. |
| |
| Authors: | Guo Linfu Zhang Xin Li Guoxiu |
| |
| Affiliation: | School of Mechanical and Electronical Control Engineering, Beijing Jiaotong University (Beijing 100044 |
| |
| Abstract: | The main factors influencing optimal excess air ratio of electronic controlled sequential injection compressed natural gas(CNG) engine are analyzed.CNG engine test bed is set up,and tests of influence of excess air ratio to the economy,power and emissio of CNG engine are done.The test results show that excess air ratio has great influence on the economy of ENG engine,excess air ratio when engine has best economy is larger than than of when engine has maximum NO_x emission,HC emission increases with excess air ratio,CO emission decreases sharply when excess air ratio is between 1.2 and 1.4,and exhaust gas temperature decreases with excess air ratio.Considering emission and economy,the best excess air ratio of this engine is(1.5.) |
| |
| Keywords: | Compressed natural gas engine Excess air ratio Multi -point sequential injection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
