公开(公告)号：US08171721B2

公开(公告)日：2012-05-08

申请号：US11656194

申请日：2007-01-22

申请人： Douglas Ernst Boddy ,  Mark Louis Dell′Eva ,  Eric O. Barrows ,  James Edward McCarthy, Jr. ,  John Robert Barla

发明人： Douglas Ernst Boddy ,  Mark Louis Dell′Eva ,  Eric O. Barrows ,  James Edward McCarthy, Jr. ,  John Robert Barla

IPC分类号： F01N3/00

CPC分类号： F01N3/36 ,  F01N9/00 ,  F01N11/002 ,  F01N2240/30 ,  F01N2550/05 ,  F01N2560/08 ,  F01N2610/03 ,  F01N2610/14 ,  F01N2610/1453 ,  F01N2610/1473 ,  F02D2200/0602 ,  Y02T10/20 ,  Y02T10/47

摘要： An exhaust line fuel injection system and associated methods of operation and control are disclosed. The fuel passes through a regulating valve connected to a pressurized fuel source and an outlet connected to an exhaust system fuel supply line. The exhaust system fuel supply line is connected to a nozzle, which generally comprises a check-valve and is configured to inject the fuel into the exhaust line. Using a pressure measuring device, an indication of the exhaust system fuel supply line pressure is obtained. A controller provides control over the flow regulating valve using feedback from the pressure indication and a predetermined relationship between the flow rate through the nozzle and one of the exhaust system fuel supply line pressure and the pressure drop across the nozzle. The method can be implemented with a single pressure measuring device. The same pressure measurements, especially their frequency spectrum, can be used to detect system faults.

摘要翻译： 公开了一种排气管路燃料喷射系统及相关操作和控制方法。 燃料通过连接到加压燃料源的调节阀和连接到排气系统燃料供应管线的出口。 排气系统燃料供给管线连接到喷嘴，喷嘴通常包括止回阀，并被配置为将燃料喷射到排气管线中。 使用压力测量装置，获得排气系统燃料供应管路压力的指示。 控制器使用来自压力指示的反馈以及通过喷嘴的流量与排气系统燃料供给管线压力和喷嘴两端的压降之间的预定关系来提供对流量调节阀的控制。 该方法可以用单个压力测量装置来实现。 相同的压力测量，特别是它们的频谱，可用于检测系统故障。