| 两级涡轮增压对轻型柴油机性能影响的试验研究 |
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| 引用本文： | 郑尊清,尧命发,赵令猛,刘潜.两级涡轮增压对轻型柴油机性能影响的试验研究[J].小型内燃机与摩托车,2011,40(3):17-22. |
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| 作者姓名： | 郑尊清 尧命发 赵令猛 刘潜 |
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| 作者单位： | 1. 天津大学内燃机燃烧学国家重点实验室,天津,300072
2. 广西玉柴机器股份有限公司 |
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| 摘 要： | 在某轻型柴油机上设计了两级涡轮增压系统,进行了匹配两级涡轮增压的试验研究。研究结果表明,在较低转速高负荷工况,废气全部流经高压级增压器可以改善经济性,在较低转速低负荷工况,将进气旁通阀和废气旁通阀全开能够减小排气背压和进气节流损失,降低比油耗;在较高转速,进气旁通阀和废气旁通阀全开的经济性更好。经济性优化情况下,两级增压相对原机单级增压可以明显降低低速段和高速段的比油耗,外特性低速段的比油耗最大降幅达到21 g/（kW.h）,标定转速也降低了10.5g/（kW.h）,发动机的万有特性经济运行区明显变宽。
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| 关 键 词： | 柴油机 两级涡轮增压 性能 |
Experimental Investigation for the Impact of Two-stage Turbocharging System on Light-duty Diesel Engine |
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| Zheng Zunqing,Yao Mingfa,Zhao Lingmeng,Liu Qian.Experimental Investigation for the Impact of Two-stage Turbocharging System on Light-duty Diesel Engine[J].Small Internal Combustion Engine and Motorcycle,2011,40(3):17-22. |
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| Authors: | Zheng Zunqing Yao Mingfa Zhao Lingmeng Liu Qian |
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| Affiliation: | Zheng Zunqing1,Yao Mingfa1,Zhao Lingmeng2,Liu Qian1 1-State Key Laboratory of Engines,Tianjin University(Tianjin,300072,China) 2-Mechanical Engineering College,Guangxi University |
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| Abstract: | A two-stage turbocharging system was designed on a LD diesel engine,and experimental investigation of two-stage turbochargers matching was conducted.Results show that the fuel economy can be improved when all the exhaust gas passed through HP turbocharger at low speed high load condition;when the intake by-pass valve and exhaust by-pass valve fully opened at lower speed low load condition,the exhaust back pressure and the throttling loss can be reduced as well as the BSFC.Besides,the fuel economy would be b... |
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| Keywords: | Diesel engine Two-stage turbocharging Performance |
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