- 专利标题: EMISSIONS TREATMENT SYSTEMS WITH TWC CATALYSTS AND SCR-HCT CATALYSTS
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申请号: EP15851907申请日: 2015-10-21
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公开(公告)号: EP3209870A4公开(公告)日: 2018-07-25
- 发明人: ZHENG XIAOLAI , JI CHUNXIN , XUE WEN-MEI , SCHLADT MATTHEW J , WANG XIAOMING , LUO TIAN , DEEBA MICHEL , WASSERMANN KNUT
- 申请人: BASF CORP
- 专利权人: BASF CORP
- 当前专利权人: BASF CORP
- 优先权: US201462066509 2014-10-21
- 主分类号: F01N3/08
- IPC分类号: F01N3/08 ; B01J29/40 ; B01J29/85 ; F01N3/20
摘要:
An emissions treatment system for an exhaust stream of an internal combustion engine including hydrocarbons, carbon monoxide, and nitrogen oxides is provided. The disclosed system can include an exhaust conduit in fluid communication with the internal combustion engine via an exhaust manifold; a first three-way conversion catalyst (TWC-1) located downstream of the internal combustion engine in the exhaust conduit; an SCR-HCT catalyst comprising a selective catalytic reduction catalyst and a hydrocarbon trap downstream of the TWC-1 in the exhaust conduit; and a third catalyst downstream of the SCR-HCT combination in the exhaust conduit, the third catalyst comprising a platinum group metal (PGM) e.g., in an amount effective to oxidize hydrocarbons. Methods of making and using such systems and components thereof are also provided.
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