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公开(公告)号:US07900439B2
公开(公告)日:2011-03-08
申请号:US11811451
申请日:2007-06-08
申请人: Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
发明人: Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
IPC分类号: F01N3/00
CPC分类号: F01N9/00 , F01N2570/16 , Y02T10/47
摘要: A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.
摘要翻译: 提供了一种用于包括催化剂和催化后氧传感器的排气系统的诊断系统。 该系统通常包括燃料控制模块,其指示燃料从富状态转换到稀薄状态,并且指令燃料从稀薄状态转换到富状态。 第一个诊断模块在从富状态转移到稀薄条件期间监测催化后氧传感器。 第二个诊断模块监测催化剂在从贫态到富状态的过渡期间。
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公开(公告)号:US20080302087A1
公开(公告)日:2008-12-11
申请号:US11811451
申请日:2007-06-08
申请人: Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
发明人: Robert J. Genslak , Igor Anilovich , Justin F. Adams , Jeffry A. Helmick , Edward Stuteville , Wesley W. Wald , Vidyapriya Srinivasan
IPC分类号: F01N7/00
CPC分类号: F01N9/00 , F01N2570/16 , Y02T10/47
摘要: A diagnostic system for an exhaust system including a catalyst and a post-catalyst oxygen sensor is provided. The system generally includes a fuel control module that commands fuel to transition from a rich condition to a lean condition and that commands fuel to transition from the lean condition to the rich condition. A first diagnostic module monitors the post-catalyst oxygen sensor during the transition from the rich condition to the lean condition. A second diagnostic module monitors the catalyst during the transition from the lean condition to the rich condition.
摘要翻译: 提供了一种用于包括催化剂和催化后氧传感器的排气系统的诊断系统。 该系统通常包括燃料控制模块,其指示燃料从富状态转换到稀薄状态,并且指令燃料从稀薄状态转换到富状态。 第一个诊断模块在从富状态转移到稀薄条件期间监测催化后氧传感器。 第二个诊断模块监测催化剂在从贫态到富状态的过渡期间。
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