公开(公告)号：US20060140819A1

公开(公告)日：2006-06-29

申请号：US11019312

申请日：2004-12-23

申请人： Julie Faas ,  James Driscoll ,  Bryan Silletti ,  Maarten Verkiel

发明人： Julie Faas ,  James Driscoll ,  Bryan Silletti ,  Maarten Verkiel

IPC分类号： G01N33/00

CPC分类号： F02D41/146 ,  F01N3/021 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/103 ,  F01N3/2033 ,  F01N13/009 ,  F01N2240/30 ,  F01N2430/06 ,  F01N2560/026 ,  F01N2560/027 ,  F02D41/028 ,  F02D41/1444 ,  Y02T10/22 ,  Y02T10/26

摘要： A system is provided for monitoring exhaust gas concentrations in an exhaust stream from an engine. The system may include the exhaust system configured to carry an exhaust stream generated by the engine. The system may further include at least one sensor in communication with the exhaust stream and configured to generate an output indicative of a concentration of NOx and a concentration of at least one sulfur-containing compound in the exhaust stream. The system may further include a controller configured to selectively produce one of a rich condition and a lean condition in the exhaust stream and to determine, during the rich condition, the concentration of the at least one sulfur-containing compound in the exhaust stream based on the output from the at least one sensor and to determine, during the lean condition, the concentration of NOx in the exhaust stream based on the output from the at least one sensor.

摘要翻译： 提供了一种用于监测来自发动机的废气流中的废气浓度的系统。 该系统可以包括被配置为承载由发动机产生的排气流的排气系统。 该系统可进一步包括至少一个与废气流连通的传感器，并配置成产生指示NOx浓度和排气流中至少一种含硫化合物浓度的输出。 该系统可以进一步包括控制器，该控制器被配置为选择性地在废气流中产生富氮条件和贫条件中的一种，并且在富态条件下，确定排气流中至少一种含硫化合物的浓度基于 来自所述至少一个传感器的输出，并且基于来自所述至少一个传感器的输出，在所述稀薄状态期间确定所述排气流中的NOx的浓度。