| 基于内部EGR率控制的柴油机排气凸轮型线仿真设计研究 |
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| 引用本文： | 褚超美,高超,李虎强. 基于内部EGR率控制的柴油机排气凸轮型线仿真设计研究[J]. 内燃机工程, 2011, 32(6) |
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| 作者姓名： | 褚超美 高超 李虎强 |
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| 作者单位： | 上海理工大学机械工程学院,上海,200093 |
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| 基金项目： | 上海市重点学科资助项目(J50503); 上海市教育委员会科研创新项目(12ZZ146) |
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| 摘 要： | 以某6缸增压柴油机为研究对象,运用GT-Power仿真分析软件,在目标发动机2 200r/min和1 800r/min常用工况转速下,分析了内部热EGR率对NOx、PM、CO排放量的影响,研究得出了重型车用柴油机内部EGR率的最佳控制范围在10%左右。在此基础上,进行了二次排气凸轮开启相位对内部EGR率控制效果的仿真分析,总结出了二次开启排气凸轮的相位、升程、包角等特性参数对柴油机功率、燃油消耗率及EGR率的影响规律。最终确立了能够进行二次开启的、具有内部EGR功能的排气门凸轮设计方案,建立了排气凸轮基本型线的数学模型。针对目标样机开展了型线特性参数对燃油消耗率、功率及EGR率的影响分析。
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| 关 键 词： | 内燃机 柴油机 内部EGR 凸轮型线 排放 |
Simulation Design of Exhaust Cam Profile for Diesel Engine with Internal EGR |
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| CHU Chao-mei,GAO Chao,LI Hu-qiang. Simulation Design of Exhaust Cam Profile for Diesel Engine with Internal EGR[J]. Chinese Internal Combustion Engine Engineering, 2011, 32(6) |
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| Authors: | CHU Chao-mei GAO Chao LI Hu-qiang |
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| Affiliation: | CHU Chao-mei,GAO Chao,LI Hu-qiang(College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China) |
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| Abstract: | For a 6-cylinder turbocharged diesel engine,at 2200 and 1800r/min,its common used speeds,the impacts of internal EGR rate on NOx,PM,CO emissions were analyzed by using GT-Power software.It is concluded that the optimal internal EGR rate is about 10% for heavy-duty automotive diesel engine.On this basis,operation of the exhaust cam with sub-lift was simulated to achieve the data on change regulations of engine power,BSFC,EGR rate with exhaust valve reopening timing,lift and cam angle.The two tasks,determinin... |
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| Keywords: | IC engine diesel engine internal EGR cam profile emission |
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