International Journal


Title94. Youngsoo Park, Choongsik Bae, Christine Mounaïim-Rousselle and Fabrice Foucher, "Application of jet propellant-8 to premixed charge ignition combustion in a single-cylinder diesel engine", International Journal of Engine Research, Vol. 16, No. 1, pp92-103, 2015 (SCI; IF 1.400, citation : 0)

The aviation fuel, jet propellant-8, was applied to premixed charge ignition combustion as well as conventional combustion in a single-cylinder diesel engine and was compared with diesel fuel. The engine performance and emissions were tested with and without exhaust gas recirculation under two operating conditions. The liquid- and vapor-phase penetration of diesel fuel and jet propellant-8 were also compared by Mie-scattering and Schlieren method under evaporating conditions using a constant-volume chamber. It was observed that jet propellant-8 exhibited slightly longer vapor-phase penetration and evidently shorter liquid-phase penetration compared with diesel fuel due to the lower distillation temperature and density of jet propellant-8. However, despite the faster evaporation rate of jet propellant-8, it was found that the ignition delay with jet propellant-8 was 2–3 crank angle degrees longer than that with diesel fuel due to its lower cetane number. This result was consistent for all operating conditions and combustion regimes. Jet propellant-8 also showed lower nitrogen oxides (NOx) and smoke emissions for both combustion regimes under the low-load condition because of locally leaner air–fuel mixture caused by longer ignition delay, higher volatility, and lower aromatic contents. As the engine load increased, jet propellant-8 emitted more NOx under conventional combustion regime due to the more vigorous premixed burn phase compared with diesel fuel. With exhaust gas recirculation, jet propellant-8 showed an improved trade-off relationship between NOx and smoke emissions for both combustion regimes due to its better evaporation characteristics and lower aromatic contents. Premixed charge ignition combustion with jet propellant-8 emitted lower smoke than conventional combustion with jet propellant-8 under near-zero NOx level.

Previous93. C.W. Park, H.C. Oh, S.D. Kim, H.S. Kim, S.Y. Lee, C.S. Bae, “Evaluation and visualiszation of stratefied ultra-lean combustion characteristics in a spray-guided type gasoline direct-injection engine”, International Journal of Automotive Technology, Vol. 15, No. 4, pp525-533, 2014. (SCI; IF 0.821, citation : 1)
Next95. Jangsik Kong and Choongsik Bae, “Effect of a conical nozzle orifice on the combustion and emissions in a direct injection compression ignition engine under low load conditions”, Proc. IMechE, Part D, Journal of Automobile Engineering, Vol.229, No. 1, pp3-13, 2015 (SCI; IF 0.645, citation : 0)
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