IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v12y2019i15p3014-d254949.html
   My bibliography  Save this article

Impact of Electrically Assisted Turbocharger on the Intake Oxygen Concentration and Its Disturbance Rejection Control for a Heavy-duty Diesel Engine

Author

Listed:
  • Chao Wu

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Kang Song

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Shaohua Li

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

  • Hui Xie

    (State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China)

Abstract

The electrically assisted turbocharger (EAT) shows promise in simultaneously improving the boost response and reducing the fuel consumption of engines with assist. In this paper, experimental results show that 7.8% fuel economy (FE) benefit and 52.1% improvement in transient boost response can be achieved with EAT assist. EAT also drives the need for a new feedback variable for the air system control, instead of the exhaust recirculation gas (EGR) rate that is widely used in conventional turbocharged engines (nominal system). Steady-state results show that EAT assist allows wider turbine vane open and reduces pre-turbine pressure, which in turn elevates the engine volumetric efficiency hence the engine air flow rate at fixed boost pressure. Increased engine air flow rate, together with the reduced fuel amount necessary to meet the torque demand with assist, leads to the increase of the oxygen concentration in the exhaust gas (EGR gas dilution). Additionally, transient results demonstrate that the enhanced air supply from the compressor and the diluted EGR gas result in a spike in the oxygen concentration in the intake manifold ( X oim ) during tip-in, even though there is no spike in the EGR rate response profile. Consequently, there is Nitrogen Oxides (NOx) emission spike, although the response of boost pressure and EGR rate is smooth (no spike is seen). Therefore, in contrast to EGR rate, X oim is found to be a better choice for the feedback variable. Additionally, a disturbance observer-based X oim controller is developed to attenuate the disturbances from the turbine vane position variation. Simulation results on a high-fidelity GT-SUTIE model show over 43% improvement in disturbance rejection capability in terms of recovery time, relative to the conventional proportional-integral-differential (PID) controller. This X oim -based disturbance rejection control solution is beneficial in the practical application of the EAT system.

Suggested Citation

  • Chao Wu & Kang Song & Shaohua Li & Hui Xie, 2019. "Impact of Electrically Assisted Turbocharger on the Intake Oxygen Concentration and Its Disturbance Rejection Control for a Heavy-duty Diesel Engine," Energies, MDPI, vol. 12(15), pages 1-22, August.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:15:p:3014-:d:254949
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/12/15/3014/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/12/15/3014/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Aghaali, Habib & Ångström, Hans-Erik, 2015. "A review of turbocompounding as a waste heat recovery system for internal combustion engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 813-824.
    2. Briggs, Ian & McCullough, Geoffrey & Spence, Stephen & Douglas, Roy, 2014. "Whole-vehicle modelling of exhaust energy recovery on a diesel-electric hybrid bus," Energy, Elsevier, vol. 65(C), pages 172-181.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Dariusz Kozak & Paweł Mazuro & Andrzej Teodorczyk, 2021. "Numerical Simulation of Two-Stage Variable Geometry Turbine," Energies, MDPI, vol. 14(17), pages 1-34, August.
    2. Gengjin Shi & Zhenlong Wu & Jian Guo & Donghai Li & Yanjun Ding, 2020. "Superheated Steam Temperature Control Based on a Hybrid Active Disturbance Rejection Control," Energies, MDPI, vol. 13(7), pages 1-26, April.
    3. Roberto Capata, 2021. "Experimental Fitting of Redesign Electrified Turbocompressor of a Novel Mild Hybrid Power Train for a City Car," Energies, MDPI, vol. 14(20), pages 1-20, October.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Zhao, Rongchao & Zhuge, Weilin & Zhang, Yangjun & Yin, Yong & Zhao, Yanting & Chen, Zhen, 2016. "Parametric study of a turbocompound diesel engine based on an analytical model," Energy, Elsevier, vol. 115(P1), pages 435-445.
    2. Zhao, Rongchao & Li, Weihua & Zhuge, Weilin & Zhang, Yangjun & Yin, Yong & Wu, Yonghui, 2018. "Characterization of two-stage turbine system under steady and pulsating flow conditions," Energy, Elsevier, vol. 148(C), pages 407-423.
    3. Zhao, Rongchao & Li, Weihua & Zhuge, Weilin & Zhang, Yangjun & Yin, Yong, 2017. "Numerical study on steam injection in a turbocompound diesel engine for waste heat recovery," Applied Energy, Elsevier, vol. 185(P1), pages 506-518.
    4. Zhao, Rongchao & Huang, Lei & Wang, Zhen & Zhuge, Weilin & Ding, Zhanming & Zhang, Yangjun, 2023. "Development of a novel dual-loop optimization method for the engine electric turbocompound system based on particle swarm algorithm," Energy, Elsevier, vol. 284(C).
    5. Zhao, Rongchao & Wen, Dayang & Li, Weihua & Zhuge, Weilin & Zhang, Yangjun & Yin, Yong, 2020. "Characteristic and regulation method of parallel turbocompound engine with steam injection for waste heat recovery," Energy, Elsevier, vol. 208(C).
    6. Ding, Zhanming & Zhuge, Weilin & Zhang, Yangjun, 2019. "Assessment of turbine performance under swirling inflow conditions," Energy, Elsevier, vol. 168(C), pages 492-504.
    7. Zhang, Zhongbo & Liu, Qin & Zhao, Rongchao & Chen, Youpeng & Qin, Qichao, 2022. "Research on in-cylinder steam injection in a turbocompound diesel engine for fuel savings," Energy, Elsevier, vol. 238(PA).
    8. Zhu, Sipeng & Gu, Yuncheng & Yuan, Hao & Ma, Zetai & Deng, Kangyao, 2020. "Thermodynamic analysis of the turbocharged marine two-stroke engine cycle with different scavenging air control technologies," Energy, Elsevier, vol. 191(C).
    9. Osorio, Julian D. & Panwar, Mayank & Rivera-Alvarez, Alejandro & Chryssostomidis, Chrys & Hovsapian, Rob & Mohanpurkar, Manish & Chanda, Sayonsom & Williams, Herbert, 2020. "Enabling thermal efficiency improvement and waste heat recovery using liquid air harnessed from offshore renewable energy sources," Applied Energy, Elsevier, vol. 275(C).
    10. Wu, Xi & Xu, Shiming & Jiang, Mengnan, 2018. "Development of bubble absorption refrigeration technology: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 3468-3482.
    11. Fabio Fatigati & Marco Di Bartolomeo & Davide Di Battista & Roberto Cipollone, 2020. "Experimental Validation of a New Modeling for the Design Optimization of a Sliding Vane Rotary Expander Operating in an ORC-Based Power Unit," Energies, MDPI, vol. 13(16), pages 1-23, August.
    12. Briggs, Ian & Murtagh, Martin & Kee, Robert & McCulloug, Geoffrey & Douglas, Roy, 2017. "Sustainable non-automotive vehicles: The simulation challenges," Renewable and Sustainable Energy Reviews, Elsevier, vol. 68(P2), pages 840-851.
    13. Pasini, Gianluca & Lutzemberger, Giovanni & Frigo, Stefano & Marelli, Silvia & Ceraolo, Massimo & Gentili, Roberto & Capobianco, Massimo, 2016. "Evaluation of an electric turbo compound system for SI engines: A numerical approach," Applied Energy, Elsevier, vol. 162(C), pages 527-540.
    14. Wang, Xuan & Shu, Gequn & Tian, Hua & Liu, Peng & Jing, Dongzhan & Li, Xiaoya, 2018. "The effects of design parameters on the dynamic behavior of organic ranking cycle for the engine waste heat recovery," Energy, Elsevier, vol. 147(C), pages 440-450.
    15. Montazerinejad, H. & Eicker, U., 2022. "Recent development of heat and power generation using renewable fuels: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 165(C).
    16. Shu, Gequn & Wang, Rui & Tian, Hua & Wang, Xuan & Li, Xiaoya & Cai, Jinwen & Xu, Zhiqiang, 2020. "Dynamic performance of the transcritical power cycle using CO2-based binary zeotropic mixtures for truck engine waste heat recovery," Energy, Elsevier, vol. 194(C).
    17. Hamed Sivaripour & Shahab Alaviyoun & Marc A. Rosen, 2022. "Thermal Investigation of a Turbocharger Using IR Thermography," Clean Technol., MDPI, vol. 4(2), pages 1-16, April.
    18. Lan, Song & Li, Qingshan & Guo, Xin & Wang, Shukun & Chen, Rui, 2023. "Fuel saving potential analysis of bifunctional vehicular waste heat recovery system using thermoelectric generator and organic Rankine cycle," Energy, Elsevier, vol. 263(PB).
    19. Zhu, Sipeng & Liu, Sheng & Qu, Shuan & Deng, Kangyao, 2017. "Thermodynamic and experimental researches on matching strategies of the pre-turbine steam injection and the Miller cycle applied on a turbocharged diesel engine," Energy, Elsevier, vol. 140(P1), pages 488-505.
    20. Dimitrova, Zlatina & Maréchal, François, 2015. "Energy integration on multi-periods and multi-usages for hybrid electric and thermal powertrains," Energy, Elsevier, vol. 83(C), pages 539-550.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:12:y:2019:i:15:p:3014-:d:254949. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.