The concept of lean-burn combustion in spark ignition engines had been developed for reducing both exhaust emissions and fuel consumption. However the operation of engines in this mode is limited due to the misfire phenomenon. Several studies have been conducted to improve the understanding of the interaction between flow-field, mixture preparation and the progress of combustion. Multidimensional optical diagnostics are an important tool and in the other hand, the work done on combustion modelling in engine becomes more and more relevant but mainly in the case of stoichiometric mixture. The objective of the present work is to provide new information on the flame structure in lean mixtures under different flow field configurations, particularly when the flame is in the laminar-turbulent transition. Classical Mie scattering tomography of flames was performed in a transparent 4-valve Spark Ignition engine. A comparison between the flame behaviour described by Fractal geometry concept and a more recent technique, Covarial analysis, which predicts better the effect of the turbulence level, is presented.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    New Data on Flame Behaviour in Lean Burn S.I. Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Spring Fuels & Lubricants Meeting ; 2001



    Publication date :

    2001-05-07




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    New data on flame behavior in lean burn spark ignition engine

    Pajot,O. / Mounaim-Rousselle,C. / Queiros-Conde,D. et al. | Automotive engineering | 2001


    Toyota Lean Burn Engine

    Noguchi,M. / Sanda,S. / Nakamura,N. et al. | Automotive engineering | 1977


    The Hybrid Rich-Burn-Lean-Burn Engine

    Meyers, D.P. | Online Contents | 1997


    The Hybrid Rich-Burn/Lean-Burn Engine

    Meyers, D. P. / Kubesh, J. T. / ASME et al. | British Library Conference Proceedings | 1995


    The Hybrid Rich-Burn-Lean-Burn Engine

    Meyers, D.P. | Online Contents | 1997