Invention Application
- Patent Title: SYSTEMS AND METHODS TO REDUCE REDUCTANT CONSUMPTION IN EXHAUST AFTERTREAMENT SYSTEMS
- Patent Title (中): 减少排污系统中的减少消耗的系统和方法
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Application No.: US14461952Application Date: 2014-08-18
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Publication No.: US20150275730A1Publication Date: 2015-10-01
- Inventor: Aniket Gupta , Michael J. Cunningham
- Applicant: Cummins Inc.
- Main IPC: F01N3/20
- IPC: F01N3/20 ; F01N3/28 ; F01N13/00 ; F01N3/035 ; F01N11/00
Abstract:
Systems, apparatus and methods are provided for reducing reductant consumption in an exhaust aftertreatment system that includes a first SCR device and a downstream second SCR device, a first reductant injector upstream of the first SCR device, and a second reductant injector between the first and second SCR devices. NOx conversion occurs with reductant injection by the first reductant injector to the first SCR device in a first temperature range and with reductant injection by the second reductant injector to the second SCR device when the temperature of the first SCR device is above a reductant oxidation conversion threshold.
Public/Granted literature
- US09567888B2 Systems and methods to reduce reductant consumption in exhaust aftertreament systems Public/Granted day:2017-02-14
Information query
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