Patent ID: 6772584
Filing Date: 2004-08-10
Classification: B01D,F01N,Y02A

Abstract:
An apparatus for removing soot and nitrogen oxide in exhaust gas of diesel engines is comprised of:a diesel particulate filter adopting a honeycomb type porous element, and having at least one pair of electrodes, wherein said pair of electrodes is loaded a breakdown voltage for burning soot out, in the manner of that said breakdown voltage is lowered as the soot build up to discharge at a location of accumulated soot, once discharging occurred, some of oxygen molecules in the exhaust gas are transformed to two oxygen radicals and some of Oxygen radicals are transformed to ozone (O3), as oxidizing the soot by ozone, said breakdown voltage is increased to stop discharging, a plasma reactor for generating a predetermined amount of plasma, said plasma reactor mounted downward on said diesel particulate filter, a catalytic reactor filled with a catalyst selected from 1B metal group, said catalytic reactor mounted downward on said plasma reactor, and a hydrocarbon supplying means for supplying hydrocarbon to exhaust gas, said hydrocarbon supplying means connected to a proper position upward on said plasma reactor.