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Experimental study on the effects of HP and LP EGR in an automotive turbocharged diesel engine


  • Zamboni, Giorgio
  • Capobianco, Massimo


An experimental investigation was performed with a view to comparing high and low pressure exhaust gas recirculation systems (HP and LP EGR) fitted on an automotive turbocharged diesel engine, focusing on analysing their influence on fuel consumption, pollutant emissions and the combustion process. Following the development of a prototype cooled LP EGR circuit, the main engine and turbocharger parameters were measured in six part-load operating conditions related to the European driving cycles. Different operating modes were considered, from the simplest and most commonly investigated (without EGR, with HP or LP EGR) to more complex schemes, namely the simultaneous application of high and low pressure recirculation and the addition of variable nozzle turbine (VNT) control. The extensive experimental database made it possible to confirm literature concerning the comparison of recirculating systems and the potential of LP EGR on engine intake temperature and NOx reductions. New aspects were also analysed, such as the balance of the high and low pressure EGR rate in order to achieve maximum NOx reductions in simultaneous applications, the interactions between EGR circuit management and the application of VNT control in order to improve the trade-off between fuel consumption and NOx and soot emissions.

Suggested Citation

  • Zamboni, Giorgio & Capobianco, Massimo, 2012. "Experimental study on the effects of HP and LP EGR in an automotive turbocharged diesel engine," Applied Energy, Elsevier, vol. 94(C), pages 117-128.
  • Handle: RePEc:eee:appene:v:94:y:2012:i:c:p:117-128
    DOI: 10.1016/j.apenergy.2012.01.046

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    References listed on IDEAS

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    Cited by:

    1. Asad, Usman & Zheng, Ming, 2014. "Exhaust gas recirculation for advanced diesel combustion cycles," Applied Energy, Elsevier, vol. 123(C), pages 242-252.
    2. Abbaszadehmosayebi, G. & Ganippa, Lionel, 2014. "Determination of specific heat ratio and error analysis for engine heat release calculations," Applied Energy, Elsevier, vol. 122(C), pages 143-150.
    3. Park, Jungsoo & Song, Soonho & Lee, Kyo Seung, 2015. "Numerical investigation of a dual-loop EGR split strategy using a split index and multi-objective Pareto optimization," Applied Energy, Elsevier, vol. 142(C), pages 21-32.
    4. Zamboni, Giorgio & Moggia, Simone & Capobianco, Massimo, 2016. "Hybrid EGR and turbocharging systems control for low NOX and fuel consumption in an automotive diesel engine," Applied Energy, Elsevier, vol. 165(C), pages 839-848.
    5. Raptotasios, Spiridon I. & Sakellaridis, Nikolaos F. & Papagiannakis, Roussos G. & Hountalas, Dimitrios T., 2015. "Application of a multi-zone combustion model to investigate the NOx reduction potential of two-stroke marine diesel engines using EGR," Applied Energy, Elsevier, vol. 157(C), pages 814-823.
    6. Liu, Bolan & Zhang, Fujun & Zhao, Changlu & An, Xiaohui & Pei, Haijun, 2016. "A novel lambda-based EGR (exhaust gas recirculation) modulation method for a turbocharged diesel engine under transient operation," Energy, Elsevier, vol. 96(C), pages 521-530.
    7. Park, Jungsoo & Choi, Jungwook, 2016. "Optimization of dual-loop exhaust gas recirculation splitting for a light-duty diesel engine with model-based control," Applied Energy, Elsevier, vol. 181(C), pages 268-277.
    8. Zhu, Dengting & Zheng, Xinqian, 2018. "A new asymmetric twin-scroll turbine with two wastegates for energy improvements in diesel engines," Applied Energy, Elsevier, vol. 223(C), pages 263-272.
    9. Shen, Zhaojie & Liu, Zhongchang & Tian, Jing & Liu, Jiangwei, 2014. "Investigation of in-cylinder gas stratification of diesel engine during intake and compression stroke," Energy, Elsevier, vol. 72(C), pages 671-679.
    10. Zhu, Dengting & Zheng, Xinqian, 2019. "Fuel consumption and emission characteristics in asymmetric twin-scroll turbocharged diesel engine with two exhaust gas recirculation circuits," Applied Energy, Elsevier, vol. 238(C), pages 985-995.
    11. Cornolti, L. & Onorati, A. & Cerri, T. & Montenegro, G. & Piscaglia, F., 2013. "1D simulation of a turbocharged Diesel engine with comparison of short and long EGR route solutions," Applied Energy, Elsevier, vol. 111(C), pages 1-15.
    12. Zamboni, Giorgio & Malfettani, Stefano & André, Michel & Carraro, Chiara & Marelli, Silvia & Capobianco, Massimo, 2013. "Assessment of heavy-duty vehicle activities, fuel consumption and exhaust emissions in port areas," Applied Energy, Elsevier, vol. 111(C), pages 921-929.
    13. Molina, S. & García, A. & Pastor, J.M. & Belarte, E. & Balloul, I., 2015. "Operating range extension of RCCI combustion concept from low to full load in a heavy-duty engine," Applied Energy, Elsevier, vol. 143(C), pages 211-227.
    14. Zhu, Dengting & Zheng, Xinqian, 2017. "Asymmetric twin-scroll turbocharging in diesel engines for energy and emission improvement," Energy, Elsevier, vol. 141(C), pages 702-714.
    15. Deng, Banglin & Yang, Jing & Zhang, Daming & Feng, Renhua & Fu, Jianqin & Liu, Jingping & Li, Ke & Liu, Xiaoqiang, 2013. "The challenges and strategies of butanol application in conventional engines: The sensitivity study of ignition and valve timing," Applied Energy, Elsevier, vol. 108(C), pages 248-260.
    16. Avola, Calogero & Copeland, Colin D. & Burke, Richard D. & Brace, Chris J., 2017. "Effect of inter-stage phenomena on the performance prediction of two-stage turbocharging systems," Energy, Elsevier, vol. 134(C), pages 743-756.
    17. Yin, Lianhao & Turesson, Gabriel & Tunestål, Per & Johansson, Rolf, 2019. "Evaluation and transient control of an advanced multi-cylinder engine based on partially premixed combustion," Applied Energy, Elsevier, vol. 233, pages 1015-1026.
    18. Park, Youngsoo & Bae, Choongsik, 2014. "Experimental study on the effects of high/low pressure EGR proportion in a passenger car diesel engine," Applied Energy, Elsevier, vol. 133(C), pages 308-316.
    19. Gonca, Guven & Sahin, Bahri & Parlak, Adnan & Ayhan, Vezir & Cesur, İdris & Koksal, Sakip, 2015. "Application of the Miller cycle and turbo charging into a diesel engine to improve performance and decrease NO emissions," Energy, Elsevier, vol. 93(P1), pages 795-800.
    20. Tauzia, Xavier & Maiboom, Alain, 2013. "Experimental study of an automotive Diesel engine efficiency when running under stoichiometric conditions," Applied Energy, Elsevier, vol. 105(C), pages 116-124.
    21. XiangRong, Li & WeiHua, Zhao & HaoBu, Gao & FuShui, Liu, 2019. "Fuel and air mixing characteristics of wall-flow-guided combustion systems under a low excess air ratio condition in direct injection diesel engines," Energy, Elsevier, vol. 175(C), pages 554-566.
    22. Giorgio Zamboni & Simone Moggia & Massimo Capobianco, 2017. "Effects of a Dual-Loop Exhaust Gas Recirculation System and Variable Nozzle Turbine Control on the Operating Parameters of an Automotive Diesel Engine," Energies, MDPI, Open Access Journal, vol. 10(1), pages 1-18, January.
    23. Thangaraja, J. & Kannan, C., 2016. "Effect of exhaust gas recirculation on advanced diesel combustion and alternate fuels - A review," Applied Energy, Elsevier, vol. 180(C), pages 169-184.
    24. Gonca, Guven & Sahin, Bahri & Parlak, Adnan & Ayhan, Vezir & Cesur, Idris & Koksal, Sakip, 2017. "Investigation of the effects of the steam injection method (SIM) on the performance and emission formation of a turbocharged and Miller cycle diesel engine (MCDE)," Energy, Elsevier, vol. 119(C), pages 926-937.


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