Abstract
Concentration Distribution Characteristics of Two-component Fuel Spray under High-pressure Injection Conditions
Highlights
In compression-ignition engines, the physical and chemical properties of the fuel are important factors that control the mixture formation process and the combustion process thereafter
No numerical analysis of two-component fuel spray has been performed under the high fuel injection pressures
The exponential value of the low boiling point fuel was larger, and the difference in the distance of mass center of gravity of each component became smaller as the fuel injection pressure increased
Summary
In compression-ignition engines, the physical and chemical properties of the fuel are important factors that control the mixture formation process and the combustion process thereafter. No numerical analysis of two-component fuel spray has been performed under the high fuel injection pressures Stratified two-component fuel spray concentration distribution under high pressure injection conditions. The spray characteristics were measured using the laser-induced fluorescence method (LIF) for single-component and two-component fuel sprays, and a breakup model suitable for high-pressure injection conditions was selected. Figure. Comparison of experimental and calculation results of axial integrated concentration distribution after start of injection 0.5ms (nC5H12:nC13H28[Vol%]=80:20, ΔPinj=100 MPa, tinj=1.07 ms, mf=3.2 mg, ρa=15.0 kg/m3, Tf=Ta=450 K)
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