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The Effects of Fuel Temperature on a Direct Injection Gasoline Spray in a Constant Volume Chamber
Technical Paper
2003-01-1810
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Fuel temperature in the injector of small direct injection gasoline engine is high. On some conditions it is higher than saturated temperature. Over saturated temperature spray characteristics greatly change. In order to predict in-cylinder phenomena accurately, it is important to understand spray behavior and mixture process above saturated temperature. Therefore spray shape, mixture formation process and Sauter mean radius were (SMR) measured in a constant volume chamber. And based on the measurement result initial spray boundary conditions were arranged so that spray characteristics over saturated temperature could be represented by using CFD code KIVA-3[1]. Moreover KIVA-3 code was combined with detailed chemical kinetics code Chemkin II to predict combustion products. [2] Calculated combustion process was validated with visualization of chemiluminescence. As a result, spray shape and penetration length have good agreement with measured ones for each fuel temperature. And also, tendencies of calculated flame propagation have roughly agreement with measured results and some species were predicted.
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Murase, E., Nakama, K., Toyoda, S., Kusaka, J. et al., "The Effects of Fuel Temperature on a Direct Injection Gasoline Spray in a Constant Volume Chamber," SAE Technical Paper 2003-01-1810, 2003, https://doi.org/10.4271/2003-01-1810.Also In
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