A very accurate control of air fuel ratio in port injected spark ignition engines during transient is required to reach the toughest polluant emissions standards. The prediction of air fuel ratio behavior has been made with models for liquid fuel film, droplets and fuel vapor in the intake manifold of single point injected engines [1], where the droplet deposition rate on the manifold was only a parameter.This paper describes a model for droplet deposition rate on the port walls and intake valve in port injected engines. The model described here takes into account the transient character of fuel injection in a real port geometry. The droplet diameter distribution is included with seven different droplet sizes, and varies across the spray, with a multicomponent fuel. The backflow of hot burned gas at valve opening is also taken into account by the model.The depostion rate on the valve and the port walls as a function of space and time has been calculated for several operating conditions. The droplet diameter distribution, the injector angle as well as the injector-valve distance were also varied.Finally a comparison of the equivalence ratio calculated with a global model including the deposition rate description with the measured equivalence ratio is given for a transient test, showing a really good correlation between calculated and measured air fuel ratios.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Modeling of Fuel Droplets Deposition Rate in Port Injected Spark Ignition Engine


    Additional title:

    Sae Technical Papers


    Contributors:
    Maroteaux, F. (author) / Moyne, F. (author)

    Conference:

    1995 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1995



    Publication date :

    1995-10-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Throttle movement rate effects on transient fuel compensation in a port-fuel-injected spark-ignition engine

    Cowart,J.S. / Cheng,W.K. / Massachusetts Inst.of Technology,Cambridge,US | Automotive engineering | 2000


    Performance of a Port Fuel Injected, Spark Ignition Engine Optimised for Hydrogen Fuel

    Dennis, P.A. / Dingli, R.J. / Atibeh, P.A. et al. | British Library Conference Proceedings | 2012


    Performance of a Port Fuel Injected, Spark Ignition Engine Optimised for Hydrogen Fuel

    Voice, Glen / Watson, Harry C. / Brear, Michael J. et al. | SAE Technical Papers | 2012


    Liquid fuel behavior in port-injected spark ignition engines

    Kelly,Zion,L. / Styron,J.P. / Lee,C.F. et al. | Automotive engineering | 1998


    Emissions Characteristics of Neat Butanol Fuel Using a Port Fuel-Injected, Spark-Ignition Engine

    Wigg, Benjamin / Lee, Chia-Fon / Kyritsis, Dimitrios et al. | SAE Technical Papers | 2011