| 发明名称 |
Kinetics-based SCR control model improvement |
| 摘要 |
A method for monitoring a discrete substrate element from an ammonia-selective catalyst reduction device configured to treat an exhaust gas feedstream of an internal combustion engine includes monitoring amounts of ammonia that are adsorbed, desorbed, and oxidized and an amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream from the discrete substrate element. An amount of ammonia consumption for the discrete substrate element is determined based on the amount of ammonia that is oxidized and the amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream. The amount of ammonia that is adsorbed and the amount of ammonia that is desorbed for the discrete substrate element are compared and the amount of ammonia consumption for the discrete substrate element is adjusted when the amount of ammonia that is adsorbed is less than the amount of ammonia that is desorbed. |
| 申请公布号 |
US9115626(B2) |
申请公布日期 |
2015.08.25 |
| 申请号 |
US201213545246 |
申请日期 |
2012.07.10 |
| 申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
Sun Min;Zanetti Igor;Jasinkiewicz Paul |
| 分类号 |
F01N3/00;F01N3/02;F01N3/10;F01N3/20 |
主分类号 |
F01N3/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. Method for monitoring a discrete substrate element from an ammonia-selective catalyst reduction device configured to treat an exhaust gas feedstream of an internal combustion engine, comprising:
monitoring an amount of ammonia that is adsorbed, an amount of ammonia that is desorbed, an amount of ammonia that is oxidized and an amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream for the discrete substrate element; determining an amount of ammonia consumption for the discrete substrate element based on the amount of ammonia that is oxidized and the amount of ammonia that is consumed in reducing NOx in the exhaust gas feedstream; comparing the amount of ammonia that is adsorbed and the amount of ammonia that is desorbed for the discrete substrate element; and adjusting the amount of ammonia consumption for the discrete substrate element when the amount of ammonia that is adsorbed is less than the amount of ammonia that is desorbed and injecting urea using a urea injection device based upon the adjusted amount of ammonia consumption. |
| 地址 |
Detroit MI US |
