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A study of spray strategies on improvement of engine performance and emissions reduction characteristics in a DME fueled diesel engine

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  • Kim, Hyung Jun
  • Park, Su Han
  • Lee, Kwan Soo
  • Lee, Chang Sik

Abstract

This paper investigated the impact of injection angle and advance injection timing on combustion, emission, and performance characteristics in a dimethyl ether (DME) fueled compression ignition engine through experimentation on spray behaviors and the use of numerical methods. To achieve this aim, a visualization system and two injectors with different injection angles were used to analyze spray characteristics. The combustion, emission, and performance characteristics were analyzed by numerical methods using a detailed chemical kinetic DME oxidation model. Each of five injection angles and timings were selected to examine the effect of injection angle and timing. It was revealed that the injected spray with narrow injection angles was impinged on the bottom wall after the SOI of BTDC 60°, and most of the fuel spray and evaporation with the wide injection angles had a distribution at the crevice region when the injection timing was advanced. In addition, NOx emissions at the SOI of BTDC 20° and TDC had higher values, and the soot emission quantities were extremely small. The narrow injection angles had good performance at the advanced injection timing, and the injection timing over a range of BTDC 40–20° showed superiority in performance characteristics.

Suggested Citation

  • Kim, Hyung Jun & Park, Su Han & Lee, Kwan Soo & Lee, Chang Sik, 2011. "A study of spray strategies on improvement of engine performance and emissions reduction characteristics in a DME fueled diesel engine," Energy, Elsevier, vol. 36(3), pages 1802-1813.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:3:p:1802-1813
    DOI: 10.1016/j.energy.2010.12.026
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    Cited by:

    1. Komninos, N.P. & Rakopoulos, C.D., 2012. "Modeling HCCI combustion of biofuels: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(3), pages 1588-1610.
    2. Kan, Xiang & Wei, Liping & Li, Xian & Li, Han & Zhou, Dezhi & Yang, Wenming & Wang, Chi-Hwa, 2020. "Effects of the three dual-fuel strategies on performance and emissions of a biodiesel engine," Applied Energy, Elsevier, vol. 262(C).
    3. Jia, Ming & Li, Yaopeng & Xie, Maozhao & Wang, Tianyou, 2013. "Numerical evaluation of the potential of late intake valve closing strategy for diesel PCCI (premixed charge compression ignition) engine in a wide speed and load range," Energy, Elsevier, vol. 51(C), pages 203-215.
    4. Wang, Haiou & Luo, Kun & Fan, Jianren, 2012. "Direct numerical simulation and CMC (conditional moment closure) sub-model validation of spray combustion," Energy, Elsevier, vol. 46(1), pages 606-617.
    5. Ju, Dehao & Huang, Zhong & Jia, Xiaoxu & Qiao, Xinqi & Xiao, Jin & Huang, Zhen, 2016. "Macroscopic characteristics and internal flow pattern of dimethyl ether flash-boiling spray discharged through a vertical twin-orifice injector," Energy, Elsevier, vol. 114(C), pages 1240-1250.
    6. Wu, Yining & Wang, Yang & Zhen, Xudong & Guan, Shuai & Wang, Jiancai, 2014. "Three-dimensional CFD (computational fluid dynamics) analysis of scavenging process in a two-stroke free-piston engine," Energy, Elsevier, vol. 68(C), pages 167-173.
    7. Zhao, Yuwei & Wang, Ying & Li, Dongchang & Lei, Xiong & Liu, Shenghua, 2014. "Combustion and emission characteristics of a DME (dimethyl ether)-diesel dual fuel premixed charge compression ignition engine with EGR (exhaust gas recirculation)," Energy, Elsevier, vol. 72(C), pages 608-617.
    8. Chen, Zheng & Liu, Jingping & Han, Zhiyu & Du, Biao & Liu, Yun & Lee, Chiafon, 2013. "Study on performance and emissions of a passenger-car diesel engine fueled with butanol–diesel blends," Energy, Elsevier, vol. 55(C), pages 638-646.
    9. Sun, Chunhua & Liu, Yu & Qiao, Xinqi & Ju, Dehao & Tang, Qing & Fang, Xiaoyuan & Zhou, Feng, 2020. "Experimental study of effects of exhaust gas recirculation on combustion, performance, and emissions of DME-biodiesel fueled engine," Energy, Elsevier, vol. 197(C).

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