IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v8y2015i12p12397-13795d59966.html
   My bibliography  Save this article

Effects of Variable Valve Lift on In-Cylinder Air Motion

Author

Listed:
  • Tianyou Wang

    (Stake Key Lab of Engines, Tianjin University, Tianjin 300072, China)

  • Daming Liu

    (School of Automotive and Transportation, Tianjin University of Technology and Education, Tianjin 300222, China)

  • Gangde Wang

    (Stake Key Lab of Engines, Tianjin University, Tianjin 300072, China)

  • Bingqian Tan

    (Stake Key Lab of Engines, Tianjin University, Tianjin 300072, China)

  • Zhijun Peng

    (Stake Key Lab of Engines, Tianjin University, Tianjin 300072, China
    School of Engineering and Technology, University of Hertfordshire, Hatfield AL10 9AB, UK)

Abstract

An investigation into in-cylinder swirl and tumble flow characteristics with reduced maximum valve lifts (MVL) is presented. The experimental work was conducted in the modified four-valve optical spark-ignition (SI) test engine with three different MVL. Particle image velocimetry (PIV) was employed for measuring in-cylinder air motion and measurement results were analyzed for examining flow field, swirl and tumble ratio variation and fluctuating kinetic energy distribution. Results of ensemble-averaged flow fields show that reduced MVL could produce strong swirl flow velocity, then resulted in very regular swirl motion in the late stage of the intake process. The strong swirl flow can maintain very well until the late compression stage. The reduction of MVL can also increase both high-frequency and low-frequency swirl flow fluctuating kinetic energy remarkably. Regarding tumble flow, results demonstrate that lower MVLs result in more horizontal intake flow velocity vectors which can be easily detected under the valve seat area. Although the result of lower MVLs show a higher tumble ratio when the piston is close to the bottom dead centre (BDC), higher MVLs substantially produce higher tumble ratios which can be confirmed when most cylinder area lies in the measuring range.

Suggested Citation

  • Tianyou Wang & Daming Liu & Gangde Wang & Bingqian Tan & Zhijun Peng, 2015. "Effects of Variable Valve Lift on In-Cylinder Air Motion," Energies, MDPI, vol. 8(12), pages 1-18, December.
  • Handle: RePEc:gam:jeners:v:8:y:2015:i:12:p:12397-13795:d:59966
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/8/12/12397/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/1996-1073/8/12/12397/
    Download Restriction: no
    ---><---

    Citations

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


    Cited by:

    1. Simona Silvia Merola & Adrian Irimescu & Silvana Di Iorio & Bianca Maria Vaglieco, 2017. "Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol," Energies, MDPI, vol. 10(7), pages 1-19, June.
    2. Yindong Song & Yiyu Xu & Xiuwei Cheng & Ziyu Wang & Weiqing Zhu & Xinyu Fan, 2022. "Using a Genetic Algorithm to Achieve Optimal Matching between PMEP and Diameter of Intake and Exhaust Throat of a High-Boost-Ratio Engine," Energies, MDPI, vol. 15(5), pages 1-17, February.
    3. Wang, Guixin & Yu, Wenbin & Li, Xiaobo & Su, Yanpan & Yang, Rui & Wu, Wentao, 2019. "Study on dynamic characteristics of intake system and combustion of controllable intake swirl diesel engine," Energy, Elsevier, vol. 180(C), pages 1008-1018.
    4. Santiago Martinez & Adrian Irimescu & Simona Silvia Merola & Pedro Lacava & Pedro Curto-Riso, 2017. "Flame Front Propagation in an Optical GDI Engine under Stoichiometric and Lean Burn Conditions," Energies, MDPI, vol. 10(9), pages 1-23, September.
    5. Zhang, Wei & Chen, Zhaohui & Duan, Qiwang & Jiang, Qianyu, 2021. "Visual test and evolutionary analysis of flow fields in cylinder of helical intake port diesel engine," Energy, Elsevier, vol. 223(C).

    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:8:y:2015:i:12:p:12397-13795:d:59966. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.