发明名称 |
LNT-SCR system optimized for thermal gradient |
摘要 |
In an exhaust aftertreatment system, two LNTs having differing compositions are configured in series downstream from an inline fuel reformer. The downstream LNT is adapted for desulfation at higher temperatures than the upstream LNT. During desulfation, the system develops temperature gradients with the temperatures increasing in the direction of exhaust flow. The ordering of the LNTs is designed utilize these gradients. In a preferred embodiment, the system also includes two SCR catalysts having different compositions. The SCR catalyst with a composition adapted to tolerate higher temperatures is located nearer the downstream end of the system.
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申请公布号 |
US7950226(B2) |
申请公布日期 |
2011.05.31 |
申请号 |
US20070803204 |
申请日期 |
2007.05.14 |
申请人 |
EATON CORPORATION;UMICORE AG & CO. KG |
发明人 |
MCCARTHY, JR. JAMES EDWARD;BAILEY OWEN HERMAN |
分类号 |
F01N3/10 |
主分类号 |
F01N3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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