Invention Grant
US08986635B2 Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalyst
有权
用于含有PGM组分和SCR催化剂的稀燃IC发动机的排气系统
- Patent Title: Exhaust system for a lean-burn IC engine comprising a PGM component and a SCR catalyst
- Patent Title (中): 用于含有PGM组分和SCR催化剂的稀燃IC发动机的排气系统
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Application No.: US14199290Application Date: 2014-03-06
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Publication No.: US08986635B2Publication Date: 2015-03-24
- Inventor: Philip Gerald Blakeman , Sougato Chatterjee , Andrew Francis Chiffey , Jane Gast , Paul Richard Phillips , Raj Rao Rajaram , Andrew Peter Walker
- Applicant: Johnson Matthey Public Limited Company
- Applicant Address: GB London
- Assignee: Johnson Matthey Public Limited Company
- Current Assignee: Johnson Matthey Public Limited Company
- Current Assignee Address: GB London
- Agent Kevin M. Carroll
- Priority: GB1200781.1 20120118
- Main IPC: B01D53/94
- IPC: B01D53/94 ; B01J33/00 ; F01N3/10 ; F01N3/18 ; F01N3/20 ; F01N3/08 ; F01N13/02 ; F01N3/035
Abstract:
Methods are disclosed for reducing or preventing a selective catalytic reduction (SCR) catalyst disposed on a first substrate monolith in an exhaust system of a lean-burn internal combustion engine from becoming poisoned with platinum group metal (PGM) which may volatilize from a catalyst composition comprising PGM disposed on at least one second substrate monolith upstream of the SCR catalyst. The methods comprise adsorbing volatilized PGM in at least one PGM trapping material, which is disposed on a third substrate monolith disposed between the first substrate monolith and the second substrate monolith.
Public/Granted literature
- US20140186245A1 EXHAUST SYSTEM FOR A LEAN-BURN IC ENGINE COMPRISING A PGM COMPONENT AND A SCR CATALYST Public/Granted day:2014-07-03
Information query
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