Invention Grant
- Patent Title: Method for operating an exhaust system, in particular of a motor vehicle
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Application No.: US16766482Application Date: 2018-11-16
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Publication No.: US11053832B2Publication Date: 2021-07-06
- Inventor: Ortwin Balthes , Berthold Keppeler , Siegfried Mueller , Thorsten Woog
- Applicant: Daimler AG
- Applicant Address: DE Stuttgart
- Assignee: Daimler AG
- Current Assignee: Daimler AG
- Current Assignee Address: DE Stuttgart
- Agency: Crowell & Moring LLP
- Priority: DE102017010825.0 20171123
- International Application: PCT/EP2018/081533 WO 20181116
- International Announcement: WO2019/101639 WO 20190531
- Main IPC: F01N3/20
- IPC: F01N3/20 ; F01N13/00 ; B01D53/94 ; F01N3/10 ; F01N11/00 ; F01N9/00

Abstract:
A method for operating an exhaust system, where the exhaust system has a first selective catalytic reduction (SCR) catalytic converter close to the engine and a second SCR catalytic converter arranged downstream of the first. A respective quantity of reducing agent to be introduced into the exhaust gas by a respective dosing element is set depending on a first temperature of the first SCR catalytic converter, where during a period of time during which the first temperature exceeds a predeterminable first threshold value and a second temperature of the second SCR catalytic converter exceeds a predeterminable second threshold value, which is lower than the first threshold value, the introduction of the reducing agent into the exhaust gas with regard to the dosing elements takes place exclusively via the second dosing element such that during the period of time, no introduction of the reducing agent into the exhaust gas takes place.
Public/Granted literature
- US20200378287A1 Method for Operating an Exhaust System, in Particular of a Motor Vehicle Public/Granted day:2020-12-03
Information query
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