发明申请
US20130025261A1 SYSTEM AND METHOD FOR CONTROLLING AMMONIA LEVELS IN A SELECTIVE CATALYTIC REDUCTION CATALYST USING A NITROGEN OXIDE SENSOR
有权
使用氮氧化物传感器控制选择性催化还原催化剂中氨基酸含量的系统和方法
- 专利标题： SYSTEM AND METHOD FOR CONTROLLING AMMONIA LEVELS IN A SELECTIVE CATALYTIC REDUCTION CATALYST USING A NITROGEN OXIDE SENSOR
- 专利标题（中）： 使用氮氧化物传感器控制选择性催化还原催化剂中氨基酸含量的系统和方法
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申请号： US13192859申请日： 2011-07-28
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公开(公告)号： US20130025261A1公开(公告)日： 2013-01-31
- 发明人: Min Sun , Kevin L. Perry , Donovan L. Dibble , Chang H. Kim , Mary Beth Furness
- 申请人： Min Sun , Kevin L. Perry , Donovan L. Dibble , Chang H. Kim , Mary Beth Furness
- 申请人地址： US MI Detroit
- 专利权人： GM Global Technology Operations LLC
- 当前专利权人： GM Global Technology Operations LLC
- 当前专利权人地址： US MI Detroit
- 主分类号： F01N3/18
- IPC分类号： F01N3/18
摘要：
A system according to the principles of the present disclosure includes an air/fuel ratio determination module and an emission level determination module. The air/fuel ratio determination module determines an air/fuel ratio based on input from an air/fuel ratio sensor positioned downstream from a three-way catalyst that is positioned upstream from a selective catalytic reduction (SCR) catalyst. The emission level determination module selects one of a predetermined value and an input based on the air/fuel ratio. The input is received from a nitrogen oxide sensor positioned downstream from the three-way catalyst. The emission level determination module determines an ammonia level based on the one of the predetermined value and the input received from the nitrogen oxide sensor.
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