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Effect of Air Motion on Fuel Spray Characteristics in a Gasoline Direct Injection Engine
Technical Paper
1999-01-0177
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Numerical simulation was carried out to investigate the effect of transient in-cylinder air motion on fuel spray characteristics in a side-injection gasoline direct injection engine. KIVA-3V code with a fuel spray impingement model was used to simulate a swirl flow driven stratification for a late injection mode. For better understanding of in-cylinder air motion during the induction and compression strokes a flat piston and a bowled piston are compared with each other. Also a simplified simulation considering only the compression stroke was compared with the full simulation. As the high-pressure fuel spray jet flow is much stronger than ambient swirl and tumble flow in the present combustion system the spray development shows similar behavior in both simulations.
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Citation
Kim, Y., Lee, S., and Cho, N., "Effect of Air Motion on Fuel Spray Characteristics in a Gasoline Direct Injection Engine," SAE Technical Paper 1999-01-0177, 1999, https://doi.org/10.4271/1999-01-0177.Also In
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