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Effects of equivalence ratio and carbon dioxide concentration on premixed charge compression ignition of gasoline and diesel-like fuel blends

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Abstract

The effects of fuel/air equivalence ratio and CO2 concentration in fuel/air charge on the ignition process of gasoline and diesel-like fuel (n-heptane) blends on a rapid compression machine are investigated in this study. Results showed that the effects of equivalence ratio on ignition delays of two ignition stages are varied. As equivalence ratio increases from 0.3 to 0.5, the first stage ignition delay slightly increases because the increased equivalence ratio improves the mixture heat capacity, reducing the in-cylinder temperature and weakening the low-temperature heat release process of the fuel. The second stage ignition delay is shortened with the increased equivalence ratio because increased fuel concentration facilitates mixture reactivity. CO2 addition to the cylinder charge can effectively reduce the peak cylinder pressure and the two stage pressure rise rates, as well as extend the durations of ignition delays of two ignition stages.

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Authors and Affiliations

  1. Key Laboratory of Power Machinery and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200240, China

    Dong Han, Huanyu Guang, Zheng Yang, Xingcai Lu & Zhen Huang

Authors
  1. Dong Han
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  2. Huanyu Guang
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  3. Zheng Yang
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  4. Xingcai Lu
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  5. Zhen Huang
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Corresponding authors

Correspondence to Xingcai Lu or Zhen Huang.

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Recommended by Associate Editor Oh Chae Kwon

Dong Han obtained his B.S. degree from Jilin University in 2005, M.S. degree from University of Michigan in 2007, and Ph.D. degree from Shanghai Jiao Tong University in 2012. Dr. Han is currently a post-doc researcher in Shanghai Jiao Tong University, Shanghai, China. His research interests include advanced engine combustion strategy development and fundamental research of fuel ignition process and chemistry.

Zhen Huang obtained his B.S., M.S. and Ph.D. degrees from Shanghai Jiao Tong University in 1982, 1984, and 1988, respectively. Dr. Huang is currently a professor in Department of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China. His research interests cover developments of advanced engine combustion strategy, alternative fuels, and engine aftertreatment technology.

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Han, D., Guang, H., Yang, Z. et al. Effects of equivalence ratio and carbon dioxide concentration on premixed charge compression ignition of gasoline and diesel-like fuel blends. J Mech Sci Technol 27, 2507–2512 (2013). https://doi.org/10.1007/s12206-013-0532-x

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  • DOI: https://doi.org/10.1007/s12206-013-0532-x

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