A multi-component fuel vaporization model is developed for numerical analysis of specific fuel component behaviors in port-fuel-injection(PFI) gasoline engines. In order to specify the differences of in-cylinder fuel distribution among its components, three-dimensional calculations of intake flow, spray and vapor motion of each component are performed with respect to engine wall temperature and the distillation characteristics of the fuel. Simultaneous measurements of in-cylinder behaviors of different volatility components in the fuel are also carried out using a laser-induced fluorescence (LIF) technique to validate the calculation results. In both measurements and calculations, the same fuels are used, which are composed of seven or eight components to simulate the distillation characteristics of two kinds of gasoline. The in-cylinder vapor amount of high and low volatility components is compared between the calculations and the experiments. Good agreement is obtained for each component. Both numerical and experimental results show that under high wall temperature conditions, the vapor amount of high volatility components in the cylinder is equivalent to almost all the injected mass in one cycle, at the other extreme under low wall temperature conditions, there is little vapor of low volatility component. Calculation results also show that the greater part of the high volatility component vaporizes from ‘flying’ droplets during intake stroke and its vapor is transported by intake flow. On the other hand, more than 40% of the low volatility component sticks on the intake port wall. Most of the rest of low volatility component also gets into a ‘wall-wetting’ film in the cylinder. The fuel component behavior is therefore completely different depending on the volatility.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Numerical Analysis on Multi-Component Fuel Behaviors in a Port-Injection Gasoline Engine


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Fuels & Lubricants Meeting & Exposition ; 1999



    Publication date :

    1999-10-25




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Numerical analysis on multi-component fuel behaviors in a port-injection gasoline engine

    Miyagawa,H. / Nagaoka,M. / Akihama,K. et al. | Automotive engineering | 2000


    Numerical Analysis of Fuel Behavior in a Port-Injection Gasoline Engine

    Crary, Brent / Ohsawa, Katsuyuki / Nagaoka, Makoto et al. | SAE Technical Papers | 1997


    Numerical analysis of fuel behavior in a port-injection gasoline engine

    Nagaoka,M. / Ohsawa,K. / Crary,B. et al. | Automotive engineering | 1997


    Characteristics of Vaporizing Continuous Multi-Component Fuel Sprays in a Port Fuel Injection Gasoline Engine

    Zhu, Guang-Sheng / Xin, Jun / Reitz, Rolf D. et al. | SAE Technical Papers | 2001


    Characteristics of vaporizing continuous multi-component fuel sprays in a port fuel injection gasoline engine

    Zhu,G.S. / Reitz,R.D. / Takabayashi,T. et al. | Automotive engineering | 2001