Invention Grant
- Patent Title: Exhaust system implementing SCR and EGR
- Patent Title (中): 排气系统实施SCR和EGR
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Application No.: US12010958Application Date: 2008-01-31
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Publication No.: US08151558B2Publication Date: 2012-04-10
- Inventor: Wade J. Robel , James J. Driscoll
- Applicant: Wade J. Robel , James J. Driscoll
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Main IPC: F02M25/06
- IPC: F02M25/06 ; F01N3/00 ; F01N3/10

Abstract:
An exhaust system for use with an engine is disclosed. The exhaust system may have an exhaust passageway, a reduction catalyst located within the exhaust passageway, and a particulate filter located within the exhaust passageway upstream of the reduction catalyst. The exhaust system may also have an oxidation catalyst located within the exhaust passageway upstream of the reduction catalyst to provide a desired ratio of NO:NO2 to the reduction catalyst, and an exhaust gas recirculation loop. The exhaust gas recirculation loop may be situated to receive exhaust from the exhaust passageway at a location upstream of the oxidation catalyst and downstream of the particulate filter.
Public/Granted literature
- US20090193794A1 Exhaust system implementing SCR and EGR Public/Granted day:2009-08-06
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