When the compression ratio of the spark ignition engine is set high as a method of improving the fuel efficiency of passenger cars, it is often combined with the direct fuel injection system for knock mitigation. In port injection, there are also situations where the fuel is guided into the cylinder while the vaporization is insufficient, especially at the cold start. If the fuel is introduced into the cylinder in a liquid state, the temperature in the cylinder will change due to sensible heat and latent heat of the fuel during vaporization. Further, if the fuel is unevenly distributed in the cylinder, the effect of the specific heat is added, and the local temperature difference is expanded through the compression process.In this research, an experiment was conducted using a rapid compression machine for the purpose of discussing the effect of the temperature-pressure time history of fuel on ignition delay time. From the results, it was confirmed that the ignition timing can be advance and retard depending on the temperature-pressure history regardless of the time for the fuel to stay in the cylinder. This indicates that ignition delay can be controlled arbitrarily according to the purpose by manipulating the temperature-pressure history. In addition, zero-dimensional detailed chemical reaction calculation was carried out in order to discuss the effect of the spatial heterogeneity of fuel mixture concentration and temperature on the ignition delay. The results showed that the heterogeneity of the air-fuel mixture essentially shortens the ignition delay time.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Effect of Temperature-Pressure Time History on Auto-Ignition Delay of Air-Fuel Mixture


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Powertrains, Fuels & Lubricants Meeting ; 2018



    Publication date :

    2018-09-10




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Effect of Temperature-Pressure Time History on Auto-Ignition Delay of Air-Fuel Mixture

    Matsuura, Katsuya / Iida, Norimasa | British Library Conference Proceedings | 2018


    Effects of Reaction Intermediates on Auto-ignition Delay Time

    Nakano, M. | British Library Online Contents | 2012


    Ignition delay of a gas mixture above a liquid fuel pool

    SCHILLER, D. / SIRIGNANO, W. | AIAA | 1991


    Effects of mixture quality on controlled auto-ignition

    Sauter,W. / Hensel,S. / Spicher,U. et al. | Automotive engineering | 2008


    Effects of Reaction Intermediates on Auto-ignition Delay Time (First Report)

    Nakano, M. / Japan Society of Automotive Engineers | British Library Conference Proceedings | 2011