| 采用VNT/EGR和DOC降低柴油机排放的试验 |
| |
| 引用本文： | 郑尊清,尧命发,高俊华,王浒,赵令猛,林铁坚. 采用VNT/EGR和DOC降低柴油机排放的试验[J]. 内燃机学报, 2010, 0(4) |
| |
| 作者姓名： | 郑尊清 尧命发 高俊华 王浒 赵令猛 林铁坚 |
| |
| 作者单位： | 天津大学内燃机燃烧学国家重点实验室;中国汽车技术研究中心;广西玉柴机器股份有限公司; |
| |
| 基金项目： | 国家重点基础研究发展计划资助项目(2007CB210002) |
| |
| 摘 要： | 在一台高压共轨柴油机上进行了采用基于可变喷嘴环涡轮增压器(VNT)的废气再循环(EGR)系统(VNT/EGR)和柴油机氧化催化器(DOC)降低排放的试验研究。结果表明,通过调节VNT开度可以有效实现EGR循环和控制EGR率,显著降低NOx排放,并且在一定EGR率范围内对烟度影响较小。提高喷射压力可以较明显改善NOx和烟度的折衷关系,采用合理的后喷参数能够在不明显影响经济性和NOx排放的前提下显著降低烟度。对燃烧室进行降低压缩比的合理设计也可以明显改善NOx和烟度的折衷关系。在燃烧系统优化的基础上,最终加装DOC的ESC循环排放测试结果满足了国Ⅳ要求,其中PM为0.0191g/(kW·h),NOx为2.88g/(kW·h),HC和CO排放远低于国Ⅳ限值。
|
| 关 键 词： | 柴油机 燃油喷射策略 排放 可变喷嘴环涡轮增压器 废气再循环 |
Experimental on Reduction of Diesel Emissions by VNT/EGR and Diesel Oxidation Catalyst |
| |
| ZHENG Zun-qing,YAO Ming-fa,GAO Jun-hua,WANG Hu,ZHAO Ling-meng,LIN Tie-jian. Experimental on Reduction of Diesel Emissions by VNT/EGR and Diesel Oxidation Catalyst[J]. Transactions of Csice, 2010, 0(4) |
| |
| Authors: | ZHENG Zun-qing YAO Ming-fa GAO Jun-hua WANG Hu ZHAO Ling-meng LIN Tie-jian |
| |
| Affiliation: | ZHENG Zun-qing1,YAO Ming-fa1,GAO Jun-hua2,WANG Hu1,ZHAO Ling-meng3,LIN Tie-jian3 ( 1. State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China,2. China Automotive Technology and Research Center,Tianjin 300162,3. Guangxi Yuchai Machinery Company Limited,Yulin 537005,China) |
| |
| Abstract: | Experimental study on reduction of emissions by variable nozzle turbocharger(VNT) based exhaust gas recirculation(EGR) system (VNT/EGR) and diesel oxidation catalyst (DOC) was conducted on a high pressure common rail diesel engine. Results show that EGR ratio can be effectively controlled by adjusting the VNT vane position. NOx emission can be greatly reduced by VNT/EGR system,with little penalty on smoke in certain EGR range. The trade-off between NOx and smoke emissions can be significantly improved by in... |
| |
| Keywords: | Diesel engine Fuel injection strategy Emissions VNT EGR |
| 本文献已被 CNKI 等数据库收录！ |
|
