| 发明名称 |
Identifying ammonia slip conditions in a selective catalytic reduction application |
| 摘要 |
A system includes a filtering module that filters a first signal that indicates an amount of nitrogen oxides (NOx) in exhaust gas upstream from a catalyst, and that filters a second signal that indicates amounts of NOx and ammonia (NH3) in exhaust gas downstream from the catalyst. A slip determination module determines whether NH3 is present in exhaust gas downstream from the catalyst based on a frequency response of the first and second signals. |
| 申请公布号 |
US9631538(B2) |
申请公布日期 |
2017.04.25 |
| 申请号 |
US200912578899 |
申请日期 |
2009.10.14 |
| 申请人 |
GM Global Technology Operations LLC |
发明人 |
Gady Kevin Andrew;Abboud Amin |
| 分类号 |
F01N3/00;F01N3/10;F01N3/20;F01N9/00;F01N11/00 |
主分类号 |
F01N3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A system comprising:
a filtering module that filters a first signal that indicates an amount of nitrogen oxides (NOx) in exhaust gas upstream from a catalyst, and that filters a second signal that indicates amounts of NOx and ammonia (NH3) in exhaust gas downstream from the catalyst; and a slip determination module that determines whether NH3 is present in exhaust gas downstream from the catalyst based on a frequency response of the first and second signals. |
| 地址 |
Detroit MI US |
