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12-12 2005 [Internal Combustion Engine Symposium 2005]

제목 Experimental Study on Pre-Shock Injection for the Reduction of NOx in Diesel Engines
분야 Engine, Emission Technology
언어 English
저자 Jun-ichi Nishimura(Hokkaido University), Yutaka Tabe(Hokkaido University), Takemi(Hokkaido University)
Key Words Diesel Engines, Emissions, Combustion, NOx, Spray, Pre-Injection, Mixing, Turbulence
초록 This paper investigates the effect of two-stage injection, termed pre-shock injection in the paper, as one of the attempts to enhance the mixing of spray tip region where large NOx formation occured. NOx reduction effect was examined in three different apparatus. The results in a propane jet flame in atmospheric pressure condition and in a actual diesel engine indicated lower NOx emission levels with pre-shock injection. However the result in a constant volume combustion bomb did not show apparent difference by the pre-shock injection. The paper discusses the possibility of the concept and necessary means to achieve the concept.
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