Invention Grant
US08991154B2 Methods and systems for controlling reductant levels in an SCR catalyst
有权
用于控制SCR催化剂中还原剂水平的方法和系统
- Patent Title: Methods and systems for controlling reductant levels in an SCR catalyst
- Patent Title (中): 用于控制SCR催化剂中还原剂水平的方法和系统
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Application No.: US12834126Application Date: 2010-07-12
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Publication No.: US08991154B2Publication Date: 2015-03-31
- Inventor: Chun Tai , Timothy Booher , Heath Morris
- Applicant: Chun Tai , Timothy Booher , Heath Morris
- Applicant Address: US NC Greensboro
- Assignee: Mack Trucks, Inc.
- Current Assignee: Mack Trucks, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: WRB-IP LLP
- Main IPC: F01N3/00
- IPC: F01N3/00 ; F01N3/20
Abstract:
Methods and systems for controlling reductant levels in an SCR catalyst are provided. In one aspect, reductant levels are adjusted in response to a ratio of change of NOx conversion efficiency to a change of reductant level. In another aspect, reductant injection levels are periodically adjusted to see if NOx conversion efficiency is better or worse at the adjusted levels.
Public/Granted literature
- US20120006004A1 METHODS AND SYSTEMS FOR CONTROLLING REDUCTANT LEVELS IN AN SCR CATALYST Public/Granted day:2012-01-12
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