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汽车安全与节能学报

汽车安全与节能学报 ›› 2014, Vol. 5 ›› Issue (04): 401-406.DOI: 10.3969/j.issn.1674-8484.2014.04.014

• 汽车节能与环保 • 上一篇    下一篇

重型柴油机涡轮复合增压技术的研究与应用

殷勇1，赵艳婷1，米娇1，陈镇1，诸葛伟林2，赵荣超2   

  1. 1. 东风商用车有限公司，武汉 430056，中国； 2. 清华大学 汽车安全与节能国家重点实验室，北京 100084，中国
  • 收稿日期:2014-07-29 出版日期:2014-12-25 发布日期:2014-12-29
  • 作者简介:殷勇(1974 － )，男（汉），江苏，研究员级高级工程师。E-mail: yinyong0612@163.com
  • 基金资助:

    国家“九七三”重点基础研究发展计划 (2011CB707204)

Research and application of the turbo-compound technology on a heavy duty diesel engine

YIN Yong1, ZHAO Yanting1, MI Jiao1, CHEN Zhen1, ZHUGE Weilin2, ZHAO Rongchao2   

  1. 1. Dongfeng Commercial Vehicle Technical Center, Wuhan 430056, China;
    2. Department of Automotive Engineering, Tsinghua University, Beijing 100086, China
  • Received:2014-07-29 Online:2014-12-25 Published:2014-12-29

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摘要：

研究了动力涡轮与曲轴之间的传动比对柴油机动力性和经济性的影响，以便将带可变截面增
压器(VGT) 的涡轮复合系统应用于重型柴油机上。构建了一维模型，以便模拟涡轮复合增压发动机，
并优化动力涡轮和涡轮增压器与发动机的匹配。在某一台常规11 L 的重型柴油机的基础上，研制了
涡轮复合柴油机试验样机，并进行试验，以研究增压器开度对柴油机性能的影响，并寻求最优控制
策略。结果表明：该涡轮复合增压发动机的全工况外特性优于原机，比油耗(BSFC) 平均改善3%，最
大改善8%。这表明：涡轮复合增压是一项能够满足未来柴油机节能减排要求的关键技术。

关键词: 重型柴油机, 涡轮复合, 可变截面涡轮增压器(VGT) , 燃油经济性, 比率油耗(BSFC)

Abstract:

The effect of transmission ratio between power turbine and diesel engine crank power on the
performances and the fuel economy was investigated for the application of turbo-compound system with Variable
Geometry Turbocharger (VGT) on a heavy duty diesel engine. A one-dimensional model was established to
simulate the turbo-compound engine and optimize the matching of the power turbine and turbocharger with the
engine. A turbo-compound prototype diesel engine was developed based on a conventional 11-L heavy-duty
diesel engine, and then tested to investigate the impacts of the openness of the VGT on the turbo-compound
engine performances, and to fine the most optimal control strategy. The results show that the turbo-compound
engine is better than the original machine under engine full load operation conditions. The brake specific fuel
consumption (BSFC) increases 3% on average with a maximum BSFC of 8%. Therefore, turbo-compounding
is a key technology to satisfy the future requirements of diesel engine’s energy conservation and emission
reduction.

Key words: heavy-duty diesel engine, turbo-compound, variable geometry turbocharger (VGT), fuel economy, brake specific fuel consumption (BSFC)