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公开(公告)号：US08943798B2
公开(公告)日：2015-02-03
申请号：US13650967
申请日：2012-10-12
Applicant: Ford Global Technologies, LLC
Inventor： Chris Riffle , Frank M. Korpics , Michiel J. Van Nieuwstadt , Devesh Upadhyay , John Paul Bogema , Jeff Reich
CPC classification number: F01N3/208 , F01N3/2066 , F01N11/00 , F01N2560/021 , F01N2560/026 , F01N2900/1616 , F01N2900/1812 , F02D21/08 , F02D41/0052 , F02D41/0235 , F02D41/146 , F02D2041/1468 , F02M26/15 , F02M26/46 , F02M26/47 , Y02T10/24 , Y02T10/47
Abstract: Various systems and methods are described for detecting ammonia slip. In one example method, an amount of exhaust gas recirculation is reduced when output from an exhaust gas sensor indicates an increase in nitrogen oxide above a threshold amount. When the sensor output increases above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to nitrogen oxide; and when the sensor output does not increase above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to ammonia.
Abstract translation: 描述了用于检测氨滑移的各种系统和方法。 在一个示例性方法中，当排气传感器的输出指示高于阈值量的氮氧化物增加时，排气量再循环量减少。 当废气再循环减少时，当传感器输出增加到第二阈值以上时，将传感器输出分配给氮氧化物; 并且当废气再循环减少时传感器输出不增加到高于第二阈值时，传感器输出被分配给氨。
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公开(公告)号：US20140298778A1
公开(公告)日：2014-10-09
申请号：US13859435
申请日：2013-04-09
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Chris Riffle , Frank M. Korpics , Michiel J. Van Nieuwstadt , Devesh Upadhyay , David Robert Nader
CPC classification number: F01N3/208 , B01D53/9409 , B01D53/9495 , B01D2251/2062 , F01N2560/026 , F01N2610/02 , F01N2900/0421 , F01N2900/1402 , F01N2900/1616 , Y02T10/24
Abstract: Various systems and methods are described for detecting ammonia slip. In one example method, an exhaust system with two NOx sensors uses transient responses of the NOx sensors to allocate tailpipe NOx sensor output to NOx and NH3 levels therein. An ammonia slip detection counter with gains is included that determines a probability of NOx and NH3 based on the measured sensor activities that are further processed by a controller to adjust one or more parameters based on the allocation and changes of sensor output.
Abstract translation: 描述了用于检测氨滑移的各种系统和方法。 在一个示例性方法中，具有两个NOx传感器的排气系统使用NOx传感器的瞬态响应来将尾管NOx传感器输出分配给其中的NOx和NH 3水平。 包括具有增益的氨滑移检测计数器，其基于测量的传感器活动来确定NOx和NH 3的概率，所述传感器活动由控制器进一步处理以基于传感器输出的分配和变化来调整一个或多个参数。
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公开(公告)号：US20140102077A1
公开(公告)日：2014-04-17
申请号：US13650967
申请日：2012-10-12
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Chris Riffle , Frank M. Korpics , Michiel J. Van Nieuwstadt , Devesh Upadhyay , John Paul Bogema , Jeff Reich
CPC classification number: F01N3/208 , F01N3/2066 , F01N11/00 , F01N2560/021 , F01N2560/026 , F01N2900/1616 , F01N2900/1812 , F02D21/08 , F02D41/0052 , F02D41/0235 , F02D41/146 , F02D2041/1468 , F02M26/15 , F02M26/46 , F02M26/47 , Y02T10/24 , Y02T10/47
Abstract: Various systems and methods are described for detecting ammonia slip. In one example method, an amount of exhaust gas recirculation is reduced when output from an exhaust gas sensor indicates an increase in nitrogen oxide above a threshold amount. When the sensor output increases above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to nitrogen oxide; and when the sensor output does not increase above a second threshold while the exhaust gas recirculation is reduced, the sensor output is allocated to ammonia.
Abstract translation: 描述了用于检测氨滑移的各种系统和方法。 在一个示例性方法中，当排气传感器的输出指示高于阈值量的氮氧化物增加时，排气量再循环量减少。 当废气再循环减少时，当传感器输出增加到第二阈值以上时，将传感器输出分配给氮氧化物; 并且当废气再循环减少时传感器输出不增加到高于第二阈值时，传感器输出被分配给氨。
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公开(公告)号：US09429059B2
公开(公告)日：2016-08-30
申请号：US13859435
申请日：2013-04-09
Applicant: Ford Global Technologies, LLC
Inventor： Chris Riffle , Frank M. Korpics , Michiel J. Van Nieuwstadt , Devesh Upadhyay , David Robert Nader
CPC classification number: F01N3/208 , B01D53/9409 , B01D53/9495 , B01D2251/2062 , F01N2560/026 , F01N2610/02 , F01N2900/0421 , F01N2900/1402 , F01N2900/1616 , Y02T10/24
Abstract: Various systems and methods are described for detecting ammonia slip. In one example method, an exhaust system with two NOx sensors uses transient responses of the NOx sensors to allocate tailpipe NOx sensor output to NOx and NH3 levels therein. An ammonia slip detection counter with gains is included that determines a probability of NOx and NH3 based on the measured sensor activities that are further processed by a controller to adjust one or more parameters based on the allocation and changes of sensor output.
Abstract translation: 描述了用于检测氨滑移的各种系统和方法。 在一个示例性方法中，具有两个NOx传感器的排气系统使用NOx传感器的瞬态响应来将尾管NOx传感器输出分配给其中的NOx和NH 3水平。 包括具有增益的氨滑移检测计数器，其基于测量的传感器活动来确定NOx和NH 3的概率，所述传感器活动由控制器进一步处理以基于传感器输出的分配和变化来调整一个或多个参数。
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