Invention Grant
- Patent Title: Aftertreatment system having two SCR catalysts
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Application No.: US14632596Application Date: 2015-02-26
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Publication No.: US09441520B2Publication Date: 2016-09-13
- Inventor: Cary A. Henry , Michael J. Ruth
- Applicant: Cummins Emission Solutions Inc.
- Applicant Address: US IN Columbus
- Assignee: Cummins Emission Solutions Inc.
- Current Assignee: Cummins Emission Solutions Inc.
- Current Assignee Address: US IN Columbus
- Agency: Taft Stettinius & Hollister LLP
- Main IPC: F01N3/20
- IPC: F01N3/20 ; F01N11/00 ; F01N3/10 ; F01N3/035 ; F01N13/00

Abstract:
A system and method includes an internal combustion engine capable of producing an exhaust stream and an aftertreatment system operationally coupled to the exhaust stream. The aftertreatment system includes an upstream selective reduction catalyst (SCR) component and a downstream SCR component that are positioned in substantially different thermal environments. The upstream and downstream SCR components are sized to fully treat the entire exhaust stream at a low temperature highest NOx conversion condition, and the downstream SCR component is sized to fully treat the entire exhaust stream at a high temperature highest NOx conversion condition.
Public/Granted literature
- US20150167526A1 AFTERTREATMENT SYSTEM HAVING TWO SCR CATALYSTS Public/Granted day:2015-06-18
Information query
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