Publication de 12 numéros par an
ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684
Indexed in
SPRAY AND FLOW-FIELD INTERACTION OF GASOLINE DIRECT INJECTION
RÉSUMÉ
Direct injection of fuel into the engine cylinders has been regarded as a way of reducing fuel consumption and pollutant emissions. The spray generated from the direct injector is of paramount importance in gasoline direct-injection (GDI) engines in that the primary atomization process must meet the requirement of quick and complete evaporation with proper mixing followed by combustion especially to prohibit excessive hydrocarbon (HC) emissions.
The interaction between air flow and fuel spray was investigated in a steady flow system embodied in a wind tunnel to simulate a wide range of flow conditions inside the cylinder of the GDI engine. Direct Mie-scattered and shadowgraph images present the macroscopic view of the liquid sprays and vapor fields. The velocity and particle size of the fuel droplets were investigated with a phase Doppler anemometer (PDA) system. The processes of atomization and evaporation with a GDI injector were observed and consequently utilized to construct a database for the spray and fuel-air mixing mechanism as a function of the flow characteristics. Fuel vaporization was found to be proportional to crossflow velocity. Air entrainment in the vortices was found to be still active in a strong flow field.
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Li Tie, Nishida Keiya, Hiroyasu Hiroyuki, Droplet size distribution and evaporation characteristics of fuel spray by a swirl type atomizer, Fuel, 90, 7, 2011. Crossref
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Oliveira Panão Miguel R., Moreira António L.N., Durão Diamantino F.G., Effect of a cross-flow on spray impingement with port fuel injection systems for HCCI engines, Fuel, 106, 2013. Crossref
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Gao Jian, Trujillo Mario F., Deshpande Suraj , Numerical Simulation of Hollow-Cone Sprays Interacting with Uniform Crossflow for Gasoline Direct Injection Engines, SAE International Journal of Engines, 4, 2, 2011. Crossref
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Wang Wenjie, Zhang Haibin, Zhao Zhongchuang, Zheng Qinghai, Bai Bofeng, Mixing of hollow-cone water spray in a confined high-temperature gas crossflow, Computers & Fluids, 154, 2017. Crossref
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Moon Seoksu, Yoon Hyeonsook, Bae Choongsik, Abo-Serie Essam F., Generation of Robust and Well-Atomized Swirl Spray, SAE Technical Paper Series, 1, 2007. Crossref
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Moon Seoksu, Choi Jaejoon, Abo-Serie Essam, Bae Choongsik, The Effects of Injector Temperature on Spray and Combustion Characteristics in a Single Cylinder DISI Engine, SAE Technical Paper Series, 1, 2005. Crossref