노후차량 교체용 삼원촉매 개발

Three way catalyst(TWC) can reduce emission in LPG engine exhaust without complex constructions. When old vehicle"s TWC was driven long odometer or worn out, it will cause deterioration of conversion efficiency. But replacing an old vehicle"s catalytic convertor are still problem too high cost. In this research, the TWC effect for exhaust gas reduction efficiency over low precious metal catalyst was tested as CVS-75 mode.