An Experimental Study on Determination of Capacity of Catalysts in 2 -Catalyst System

2-촉매 시스템에서의 촉매 용량 결정에 대한 실험적 연구

There are various method for the LEV(Low Emission Vehicle) regulation, but 2-catalyst system using one catalyst near exhaust manifold and another catalyst underfloor, is the most popular. This system uses the proven catalyst technology and doesn't use energy. But it is difficult to determine capacity of the two catalysts. So an optimization method to determine the capacity has been proposed by other researcher. It uses the fact that emission decreases with capacity increasing, but the decreasing ratio slows down in high capacity range. It means that the emission and capacity of catalyst is exponentially decreasing relation. In this paper this method will be verified with various experiments. And this method was proven to be very useful to determine the capacity of two catalysts system.