| 车用柴油机排气再循环控制系统 |
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| 引用本文： | 刘忠长,朱昌吉,张振东. 车用柴油机排气再循环控制系统[J]. 吉林大学学报(工学版), 2004, 34(3): 337-341 |
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| 作者姓名： | 刘忠长 朱昌吉 张振东 |
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| 作者单位： | 吉林大学,汽车工程学院,吉林,长春,130022;上海理工大学,机械工程学院,上海,200093 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(2001CB209201). |
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| 摘 要： | 为了降低车用柴油机的NOx排放,设计了用于增压中冷柴油机的排气再循环(EGR)系统。介绍了EGR控制系统及控制方法。该系统采用进气节流阀与EGR流量控制阀联合控制,可实现0～30%EGR率的优化。利用13工况对该系统控制NOx的效果进行了评价。实验表明,采用EGR技术,可以大幅度地降低NOx的排放,微粒排放基本不变。但HC和CO排放有所增加,13工况加权比油耗也较原机有所降低。
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| 关 键 词： | 内燃机工程 排放 废气再循环 柴油机 |
| 文章编号： | 1671-5497(2004)03-0337-05 |
| 收稿时间： | 2004-01-18 |
| 修稿时间： | 2004-01-18 |
EGR system for automotive diesel engine |
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| LIU Zhongchang,ZHU Changji,ZHANG Zhendong. EGR system for automotive diesel engine[J]. Journal of Jilin University:Eng and Technol Ed, 2004, 34(3): 337-341 |
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| Authors: | LIU Zhongchang ZHU Changji ZHANG Zhendong |
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| Affiliation: | LIU Zhongchang~1,ZHU Changji~1,ZHANG Zhendong~2 |
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| Abstract: | To reduce NO_x emission of an automotive diesel engine, an EGR(Exhaust Gas Recirculation) system was developed.The control system hardware of EGR and its control strategy were presented. In this system,an intake air throttle valve and an EGR flow valve are controlled by a single chip processor.The test results show that optimized EGR ratio from 0～30% can be realized by this EGR system.The EGR system can greatly reduce NO_x emission while keeping the particulate emission at the same level,but the HC and CO emissions deteriorate to some extent in the same test conditions.The brake specific fuel consumption measured by the ECE R49 test cycle also decreased compared to baseline engine. |
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| Keywords: | internal-combustion engine engineering exhaust emission EGR diesel engine |
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