| 摘要 |
An exhaust system for a diesel engine includes a NO<SUB>x</SUB>-trap having at least one first NO<SUB>x </SUB>absorbent and platinum. The exhaust system also has at least one second NO<SUB>x </SUB>absorbent disposed upstream of the NO<SUB>x </SUB>trap. The at least one second NO<SUB>x </SUB>absorbent is alumina, ceria, or both. |
