发明名称 |
Vehicle sulfur oxide trap and related method |
摘要 |
An automobile exhaust system includes a catalytic converter, a NOx trap, and a sulfur oxide trap. The sulfur oxide trap improves the efficiency of the NOx trap. Sulfur oxide has a deleterious effect on the performance of nitrogen oxide traps. The sulfur oxide trap comprises a monolithic substrate which is over-coated with an aluminum oxide layer and a mixed oxide layer of calcium oxide and magnesium oxide. In a variation, a sulfur oxide trap is integrated with a nitrogen oxide trap by coating the catalyst contained within a nitrogen oxide trap with a mixed oxide layer of calcium oxide and magnesium oxide. In each embodiment, the sulfur oxide trap can be regenerated by heating at elevated temperature for a short time period. |
申请公布号 |
US7021049(B2) |
申请公布日期 |
2006.04.04 |
申请号 |
US20020301939 |
申请日期 |
2002.11.22 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
BERRIS AMY;LI JUN (JOHN);CHATTHA MOHINDER SINGH;WATKINS WILLIAM LEWIS HENDERSON |
分类号 |
F01N3/00;B01D53/94;B01J20/04;B01J20/08;B01J20/30;B01J20/32;B01J20/34;B01J23/02;B01J37/02;F01N3/08;F01N3/10;F01N13/02 |
主分类号 |
F01N3/00 |
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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