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Effect of Injection Pressure on Atomization Characteristics of Fuel Spray in High-Pressure Gasoline Injector
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 Title & Authors
Effect of Injection Pressure on Atomization Characteristics of Fuel Spray in High-Pressure Gasoline Injector
Lee, Chang-Sik; Choi, Soo-Chon; Kim, Min-Kyu; Kwon, Sang-Il;
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This paper describes the macroscopic behavior and atomization characteristics of the high-pressure gasoline injector in direct-injection gasoline engine. The global spray behavior of fuel injector was visualized by shadowgraph technique. The atomization characteristics of gasoline spray such as mean diameter and mean velocity of droplet were measured by the phase Doppler particle analyzer system. In order to obtain the influence of fuel injection pressure, the macroscopic visualization and experiment of particle measurement on the fuel spray were investigated at 3,5 and 7 MPa of injection pressure under different surrounding pressure in the spray chamber. The results of this work show that the fuel injection pressure of gasoline injector in GDl engine has influence upon the mean droplet diameter, mean velocity of spray droplet, the spray tip penetration, and spray width under the elevated ambient pressure.
Fuel Atomization;Spray Characteristics;Gasoline Injector;Mean Droplet Diameter;
 Cited by
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