KATALYSATORSYSTEM

摘要

The invention relates to a catalytic converter system for a preferably lean-burning internal combustion engine, comprising a precatalytic converter device which is placed near the engine and an NOx storage catalytic converter which is disposed downstream from the precatalytic converter device. Said precatalytic converter device has a volume of less than 0.75 dm<3> while the NOx storage catalytic converter has a volume of more than 1.9 dm<3>. Additionally, the precatalytic converter device has a specific volume of less than 0. 38 dm<3> while the NOx storage catalytic converter has a specific volume of more than 1.3 dm<3>, the specific volume being in relation to the cubic capacity of the internal combustion engine in dm<3>.