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Received December 20, 2006
Accepted May 2, 2007
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Reduction of NOx in diesel engine emissions by using a plasmatron fuel reformer
College of Engineering, Cheju National University, Ara-1 dong, Jeju 690-756, Korea 1Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Korea
hjlee@cheju.ac.kr
Korean Journal of Chemical Engineering, January 2008, 25(1), 84-88(5), 10.1007/s11814-008-0014-5
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Abstract
An experimental study of diesel exhaust cleaning by means of the plasma chemical pretreatment of fuel is described. Some portion of the fuel was activated in an arc discharge and turned into hydrogen-rich synthesis gas. Plasma chemical reformation of fuel was carried out by using a DC arc plasmatron that was fabricated to increase the ability of gas activation. The yield of diesel fuel reformation reached about 80-100% when small quantities of fuel (flow rate up to ~6 ml/min) were reformed. The synthesis gas, containing H2+CO, was supplied into the engine together with the rest of the fuel-air mixture, and the NOx content in its emissions reduced up to 23%.
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