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Effects of Spray Internal EGR Using CO 2 Gas Dissolved Fuel on Combustion Characteristics and Emissions in Diesel Engine
Technical Paper
2019-32-0592
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
We have proposed the application of Exhaust Gas Recirculation (EGR) gas dissolved fuel which might improve spray atomization through effervescent atomization instead of high injection pressure. Since EGR gas is included in the spray of EGR gas dissolved fuel, it directly contributes to combustion, and the further reduction of NOx emissions is expected rather than the conventional external EGR. In our research, since highly contained in the exhaust gas and highly soluble in the fuel, CO2 was selected as the dissolved gas to simulate EGR gas dissolved. In this paper, the purpose is to evaluate the influence of the application of CO2 gas dissolved fuel on the combustion characteristics and emission characteristics inside the single cylinder, direct injection diesel engine. As a result, by use of the fuel, smoke was reduced by about 50 to 70%, but NOx reduction does not have enough effect. However, NOx emissions is reduced with external EGR, and the effect of NOx reduction is effective by combined the external EGR and the CO2 gas dissolved fuel.
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Mukayama, T., Hattori, Y., Kuribayashi, M., Asai, G. et al., "Effects of Spray Internal EGR Using CO2 Gas Dissolved Fuel on Combustion Characteristics and Emissions in Diesel Engine," SAE Technical Paper 2019-32-0592, 2020.Data Sets - Support Documents
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References
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