| abstract |
An exhaust treatment device (10, 30, 50) for treating an exhaustngas stream combines the functionalities of a catalytic particulate filter and anNOx absorber catalyst into a single integral device and is disposed in an exhaustnconduit. By combining the functionalities of the catalytic particulate filter and anNO x absorber catalyst into a single integral device, the exhaust treatment devicen(10, 30, 50) eliminates the temperature losses inherent to the heat capacity ofnone catalytic device placed in front of the other. |