In this work, a boosted single-cylinder spark ignition port-fuel injection optical engine was used for the experimental activity. Firstly, it was equipped with a four-valve head of a commercial turbocharged multi-cylinder engine. Then a prototype engine head with flush installed intake valves was tested. The effect of the different head geometry was evaluated in closed intake valves fuel injection condition. High spatial resolution cycle-resolved digital imaging was used to characterise the flame propagation. Moreover, the presence of diffusion-controlled flames near the valves and on the cylinder walls was investigated. These flames induced the formation of unburned hydrocarbons and soot particles. The spatial distribution and temporal evolution of soot were evaluated by the two colour pyrometry. The prototype configuration showed higher combustion process efficiency than the standard one inducing a little increase in performance and a slight reduction in carbon oxides emissions. Moreover, a strong decrease in exhaust soot and unburned hydrocarbons was measured.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effect of the Engine Head Geometry on the Combustion Process in a PFI Boosted Spark-ignition Engine


    Additional title:

    Sae Int. J. Engines


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2009


    Published in:

    Publication date :

    2009-04-20


    Size :

    9 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effect of the engine head geometry on the combustion process in a port fuel injection boosted spark ignition engine

    Merola,S.S. / Sementa,P. / Tornatore,C. et al. | Automotive engineering | 2009


    Investigation of Low-Speed Pre-Ignition in Boosted Spark Ignition Engine

    Zhang, Desheng / Fu, Dingyuan / Qiao, Haibo et al. | SAE Technical Papers | 2015


    Study of low-speed pre-ignition in boosted spark ignition engine

    Okada,Y. / Miyashita,S. / Izumi,Y. et al. | Automotive engineering | 2014


    The effect of chamber geometry on spark-ignition engine combustion

    Poulos,S.G. / Heywood,J.B. / Massachusetts Inst.of Technol.,Sloan Automot.Lab.,US | Automotive engineering | 1983


    The Effect of Chamber Geometry on Spark-Ignition Engine Combustion

    Heywood, John B. / Poulos, Stephen G. | SAE Technical Papers | 1983