发明申请
- 专利标题： AMMONIA SLIP DETECTION
- 专利标题（中）： AMMONIA SLIP检测
-
申请号： US13943474申请日： 2013-07-16
-
公开(公告)号： US20140123629A1公开(公告)日： 2014-05-08
- 发明人: Navtej Singh , Paul Boon Charintranond , Michael James Miller
- 申请人： International Engine Intellectual Property Company, LLC
- 主分类号： F01N3/20
- IPC分类号： F01N3/20
摘要：
A method of detecting ammonia in the exhaust system includes detecting a predetermined engine operating condition. Upon detecting the predetermined operating condition, the method determines a first NOx conversion efficiency of a catalyst at a first time T1. The method then injects a reactant into the exhaust upstream of the catalyst and determines a second NOx conversion efficiency at a second time T2. The method then processes the first and second NOx conversion efficiencies to determine whether an ammonia slip condition exists.