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Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine

Author

Listed:
  • Adrian Clenci

    (University of Pitesti, str. Tg. din Vale nr. 1, Pitesti 110040, Romania
    Le CNAM, LGP2ES-EA21, 292, rue St. Martin, Paris, 75003, France)

  • Adrian Bîzîiac

    (Renault Group Romania)

  • Pierre Podevin

    (Le CNAM, LGP2ES-EA21, 292, rue St. Martin, Paris, 75003, France)

  • Georges Descombes

    (Le CNAM, LGP2ES-EA21, 292, rue St. Martin, Paris, 75003, France)

  • Michael Deligant

    (Arts et Métiers ParisTech, DynFluid, 151, Boulevard de l'Hôpital, Paris, 75013, France)

  • Rodica Niculescu

    (University of Pitesti, str. Tg. din Vale nr. 1, Pitesti 110040, Romania)

Abstract

Reducing fuel consumption is a prime objective in the automotive industry in order to meet regulatory and customer demands. Variable valve actuation offers many opportunities for improving the spark ignition engine’s performance in areas such as fuel economy and pollutant emissions. Our studies revealed that the ability to control maximum intake valve lift does indeed offer the ability to control intake air mass, but also has the added benefit that it improves the fuel-air mixing process thanks to an increased turbulence, caused by the increased intake flow velocity. This is particularly important at idle and low part loads when low maximum lifts are to be used for improving the fuel economy or for achieving the required power. The paper focuses on the experimental results obtained when approaching idle operation with different intake valve laws. Results indicating the potential of using low intake valve lift for fuel economy and cyclic dispersion improvement are presented in this paper.

Suggested Citation

  • Adrian Clenci & Adrian Bîzîiac & Pierre Podevin & Georges Descombes & Michael Deligant & Rodica Niculescu, 2013. "Idle Operation with Low Intake Valve Lift in a Port Fuel Injected Engine," Energies, MDPI, vol. 6(6), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:6:y:2013:i:6:p:2874-2891:d:26423
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    References listed on IDEAS

    as
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    2. Sher, E. & Bar-Kohany, T., 2002. "Optimization of variable valve timing for maximizing performance of an unthrottled SI engine—a theoretical study," Energy, Elsevier, vol. 27(8), pages 757-775.
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    5. Begg, S.M. & Hindle, M.P. & Cowell, T. & Heikal, M.R., 2009. "Low intake valve lift in a port fuel-injected engine," Energy, Elsevier, vol. 34(12), pages 2042-2050.
    6. 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.
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    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. Clenci, Adrian Constantin & Iorga-Simăn, Victor & Deligant, Michael & Podevin, Pierre & Descombes, Georges & Niculescu, Rodica, 2014. "A CFD (computational fluid dynamics) study on the effects of operating an engine with low intake valve lift at idle corresponding speed," Energy, Elsevier, vol. 71(C), pages 202-217.

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