| 车用二级增压系统匹配方法与模拟计算 |
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| 引用本文： | 何义团,马朝臣,朱智富,魏名山,韩静.车用二级增压系统匹配方法与模拟计算[J].车用发动机,2007(3):83-85,92. |
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| 作者姓名： | 何义团 马朝臣 朱智富 魏名山 韩静 |
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| 作者单位： | 北京理工大学机械与车辆工程学院,北京,100081;武警北京指挥学院,北京,100012 |
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| 摘 要： | 为某发动机匹配一套二级增压系统,介绍了二级增压系统中高低两级压气机的匹配方法。建立了二级增压发动机计算模型,并进行外特性稳定工况模拟计算,确定发动机各转速下旁通阀的最佳开度。根据模拟结果,分析了旁通阀开度对高低两级增压器转速及压比的影响,确定了高低两级压气机压比和总压比随发动机转速的变化趋势。计算结果表明,匹配的二级增压系统基本满足发动机强化要求。
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| 关 键 词： | 二级增压 柴油机 匹配 数值模拟 |
| 文章编号： | 1001-2222（2007）03-0083-03 |
| 修稿时间： | 2007-03-102007-05-21 |
Match Method and Simulation of Vehicular Two Stage Turbocharging System |
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| HE Yi-tuan,MA Chao-chen,ZHU Zhi-fu,WEI Ming-shan,HAN Jing.Match Method and Simulation of Vehicular Two Stage Turbocharging System[J].Vehicle Engine,2007(3):83-85,92. |
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| Authors: | HE Yi-tuan MA Chao-chen ZHU Zhi-fu WEI Ming-shan HAN Jing |
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| Institution: | 1. School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China; 2. Beijing Command College of CAPF, Beijing 100012, China |
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| Abstract: | A two-stage turbo-charging system was matched for a diesel engine.The matching method was introduced.A model of the twostage turbocharged engine was set up,and the engine's steady operating conditions of external characteristics were calculated.The bypass valve's optimal open degrees under different engine speeds were defined.According to the numerical simulating results,the influence of the bypass valve's opening degree on the two stages turbochargers' speed and pressure ratio was analyzed.The variation trend of the pressure ratio of high and low stage compressor and the system's total pressure ratio versus the engine's speed was defined.The calculated results indicate that the two-stage turbo-charging system meets the engine's enhancing requirement. |
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| Keywords: | two stage turbo-charging diesel engine match numerical simulating |
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