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Catalyst light-off behavior of a spark-ignition LPG (liquefied petroleum gas) engine during cold start

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  • Gong, Changming
  • Huang, Kuo
  • Deng, Baoqing
  • Liu, Xunjun

Abstract

The effects of the length of the gas flow path from the exhaust outlet in the cylinder head to the catalyst inlet in the exhaust line, the ignition timing and the engine idle speed on the three-way catalyst light-off behavior in an electronically controlled inlet port LPG (liquefied petroleum gas) injection SI (spark-ignition) engine during cold start were investigated experimentally. The results showed that these factors affect the catalyst light-off behavior significantly during cold start. The reduction of the gas flow path length upstream the catalyst reduces the heat loss from the exhaust gases, increases the temperature of the catalyst, and results in faster catalyst light-off. Retarding the ignition timing from 0 to 15°CA ATDC decreases 22 and 8 s catalyst light-off time for HC and CO respectively. Increasing the engine idle speed from 1400 to 1800 rpm decreases 19 and 15 s the light-off time for HC and CO respectively.

Suggested Citation

  • Gong, Changming & Huang, Kuo & Deng, Baoqing & Liu, Xunjun, 2011. "Catalyst light-off behavior of a spark-ignition LPG (liquefied petroleum gas) engine during cold start," Energy, Elsevier, vol. 36(1), pages 53-59.
    • Handle: RePEc:eee:energy:v:36:y:2011:i:1:p:53-59
    DOI: 10.1016/j.energy.2010.11.026
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    5. Gong, Changming & Liu, Zilong & Su, Hang & Chen, Yulin & Li, Junbo & Liu, Fenghua, 2019. "Effect of injection strategy on cold start firing, combustion and emissions of a LPG/methanol dual-fuel spark-ignition engine," Energy, Elsevier, vol. 178(C), pages 126-133.
    6. Gong, Changming & Liu, Jiajun & Peng, Legao & Liu, Fenghua, 2017. "Numerical study of effect of injection and ignition timings on combustion and unregulated emissions of DISI methanol engine during cold start," Renewable Energy, Elsevier, vol. 112(C), pages 457-465.
    7. Wang, Xin & Ge, Yunshan & Zhang, Chuanzhen & Tan, Jianwei & Hao, Lijun & Liu, Jia & Gong, Huiming, 2016. "Effects of engine misfire on regulated, unregulated emissions from a methanol-fueled vehicle and its ozone forming potential," Applied Energy, Elsevier, vol. 177(C), pages 187-195.
    8. Myung, Cha-Lee & Choi, Kwanhee & Kim, Juwon & Lim, Yunsung & Lee, Jongtae & Park, Simsoo, 2012. "Comparative study of regulated and unregulated toxic emissions characteristics from a spark ignition direct injection light-duty vehicle fueled with gasoline and liquid phase LPG (liquefied petroleum ," Energy, Elsevier, vol. 44(1), pages 189-196.
    9. Wang, Xin & Ge, Yunshan & Liu, Linlin & Peng, Zihang & Hao, Lijun & Yin, Hang & Ding, Yan & Wang, Junfang, 2015. "Evaluation on toxic reduction and fuel economy of a gasoline direct injection- (GDI-) powered passenger car fueled with methanol–gasoline blends with various substitution ratios," Applied Energy, Elsevier, vol. 157(C), pages 134-143.
    10. Najjar, Yousef S.H., 2011. "Comparison of performance of a Greener direct-injection stratified-charge (DISC) engine with a spark-ignition engine using a simplified model," Energy, Elsevier, vol. 36(7), pages 4136-4143.
    11. Hamedi, Mohammad Reza & Doustdar, Omid & Tsolakis, Athanasios & Hartland, Jonathan, 2021. "Energy-efficient heating strategies of diesel oxidation catalyst for low emissions vehicles," Energy, Elsevier, vol. 230(C).
    12. Cha-Lee Myung & Juwon Kim & Wonwook Jang & Dongyoung Jin & Simsoo Park & Jeongmin Lee, 2015. "Nanoparticle Filtration Characteristics of Advanced Metal Foam Media for a Spark Ignition Direct Injection Engine in Steady Engine Operating Conditions and Vehicle Test Modes," Energies, MDPI, vol. 8(3), pages 1-17, March.
    13. Gong, Changming & Sun, Jingzhen & Liu, Fenghua, 2021. "Numerical research on combustion and emissions behaviors of a medium compression ratio direct-injection twin-spark plug synchronous ignition methanol engine under steady-state lean-burn conditions," Energy, Elsevier, vol. 215(PB).
    14. Kim, Tae Young & Park, Cheolwoong & Oh, Seungmook & Cho, Gyuback, 2016. "The effects of stratified lean combustion and exhaust gas recirculation on combustion and emission characteristics of an LPG direct injection engine," Energy, Elsevier, vol. 115(P1), pages 386-396.
    15. Masi, Massimo, 2012. "Experimental analysis on a spark ignition petrol engine fuelled with LPG (liquefied petroleum gas)," Energy, Elsevier, vol. 41(1), pages 252-260.

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