发明授权
- 专利标题： Method and arrangement for operating an internal combustion engine in combination with an NOx storage catalytic converter and an NOx sensor
- 专利标题（中）： 与NOx储存催化转化器和NOx传感器结合操作内燃机的方法和装置
-
申请号： US09404158申请日： 1999-09-27
-
公开(公告)号： US06389802B1公开(公告)日： 2002-05-21
- 发明人: Joachim Berger , Rene Schenk , Andreas Blumenstock , Klaus Winkler
- 申请人： Joachim Berger , Rene Schenk , Andreas Blumenstock , Klaus Winkler
- 优先权： DE19843879 19980925
- 主分类号： F01N300
- IPC分类号： F01N300
摘要：
The invention is directed to a control of an air/fuel ratio during operation of an internal combustion engine having a catalytic converter and an NOx sensor mounted behind the catalytic converter as seen in flow direction. The engine is operated alternately in a first phase with a mixture which is deficient in fuel compared to the stoichiometric mixture composition and, in a second phase, with a stoichiometric or rich mixture composition. The triggering of the change between the two phases is influenced by the signal of the NOx sensor.
信息查询
