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Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation

Author

Listed:
  • Fangyuan Zhang

    (The State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China)

  • Zhongshu Wang

    (The State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China)

  • Jing Tian

    (The State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China)

  • Linlin Li

    (SAIC, Shanghai 201201, China)

  • Kaibo Yu

    (Shanghai Volkswagen Automotive Co., Ltd., Shanghai 201805, China)

  • Kunyi He

    (The State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China)

Abstract

To reduce the smoke and nitrogen oxide (NOx) emissions; a detailed study concerned with exhaust gas recirculation (EGR) and diesel injection strategy was conducted on a two-stage series turbocharging diesel engine under transient operating condition. One transient process based on the constant speed of 1650 r/min and load increases linearly from 10% to 100% within 5 s was tested in this study. The effect of the EGR valve control strategy on engine transient performance was examined. The results show that better air-fuel mixing quality can be obtained with the optimized the EGR valve open loop control strategy and the smoke opacity peak decreased more than 64%. Under the EGR valve close loop control strategy; the smoke opacity peak was lower than with open loop control strategy; but higher than without EGR. The effect of fuel injection strategy on engine transient performance was examined with the EGR valve close loop control. The results show that sectional-stage rail pressure (SSRP) strategy (increasing injection pressure from a turning point load to 100% load) and optimizing fuel injection timing can improve the engine emission performance. The satisfactory results can be obtained with lower NOx (382 ppm) emissions and the smoke opacity peak (3.8%), when the turning point load is set to 60% with the injection timing delay 6° CA.

Suggested Citation

  • Fangyuan Zhang & Zhongshu Wang & Jing Tian & Linlin Li & Kaibo Yu & Kunyi He, 2020. "Effect of EGR and Fuel Injection Strategies on the Heavy-Duty Diesel Engine Emission Performance under Transient Operation," Energies, MDPI, vol. 13(3), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:3:p:566-:d:312818
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    References listed on IDEAS

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    1. Wang, Zhongshu & Chen, Wenjing & Wang, Dan & Tan, Manzhi & Liu, Zhongchang & Dou, Huili, 2016. "A novel combustion evaluation method based on in-cylinder pressure traces for diesel/natural gas dual fuel engines," Energy, Elsevier, vol. 115(P1), pages 1130-1137.
    2. Agarwal, Avinash Kumar & Dhar, Atul & Gupta, Jai Gopal & Kim, Woong Il & Lee, Chang Sik & Park, Sungwook, 2014. "Effect of fuel injection pressure and injection timing on spray characteristics and particulate size–number distribution in a biodiesel fuelled common rail direct injection diesel engine," Applied Energy, Elsevier, vol. 130(C), pages 212-221.
    3. Armas, Octavio & Ballesteros, Rosario & Cardenas, María Dolores, 2012. "Thermodynamic diagnosis of diesel and biodiesel combustion processes during load-increase transient sequences," Applied Energy, Elsevier, vol. 97(C), pages 558-568.
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    Cited by:

    1. Wenyu Gu & Wanhua Su, 2023. "Study on the Effects of Exhaust Gas Recirculation and Fuel Injection Strategy on Transient Process Performance of Diesel Engines," Sustainability, MDPI, vol. 15(16), pages 1-21, August.

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