| 摘要 |
The present invention relates to a device and a method for processing the exhaust gas of a vehicle, and aims to provide a device and a method for processing the exhaust gas, which can maximize the reduction of NOx by using a lambda sensor and a temperature sensor without using a NOx sensor. To achieve this purpose: a lean NOx trap (LNT), a selective catalytic reduction (SCR) catalyst, and an oxygen storage catalyst including an oxygen storage material and a jewel are placed in order in the flow direction of the exhaust gas; a front end lambda sensor is placed on the side of the top flow of the LNT; a rear end lambda sensor is placed on the side of the bottom flow of the oxygen storage catalyst; and a temperature sensor is placed to measure the exhaust gas temperature. |
