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Soot elimination and NOx and SOx reduction in diesel-engine exhaust by a combination of discharge plasma and oil dynamics

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4 Author(s)
Higashi, M. ; Niles Parts Co. Ltd., Tokyo, Japan ; Uchida, S. ; Suzuki, N. ; Fujii, K.

The soot in the exhaust gas from a 2-L diesel-engine car has been eliminated almost completely, independent of the load and cruising speed, by a plasma reactor mounted downstream of the engine exhaust and a novel technique using a combination of discharge plasma and oil dynamics. The NOx (NO2+NO) and SOx components have also been reduced by about 70% at a rotational speed of 1200 rpm and a load of 7 kg-m, corresponding to about 60% of maximum torque (about 11.4 kg-m at 1200 rpm). The reduction rate of NOx in this investigation is about 20% more efficient than ordinary treatment using a discharge plasma only

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Plasma Science, IEEE Transactions on  (Volume:20 ,  Issue: 1 )