公开(公告)号：US20100293925A1

公开(公告)日：2010-11-25

申请号：US12864189

申请日：2008-12-20

申请人： Jochen Lahr ,  Rainer Pauls

发明人： Jochen Lahr ,  Rainer Pauls

IPC分类号： F01N11/00 ,  G01M15/10

CPC分类号： G01N33/0037 ,  F02D41/1461 ,  F02D41/1463 ,  G01N33/0024 ,  Y02A50/245 ,  Y02A50/25

摘要： In a method for determining an NO2 concentration and/or a concentration ratio of NO2 and NO in an exhaust tract of a combustion device, such as an internal combustion engine, an NOx sensor that is sensitive with respect to NO2 and NO is utilized, which provides a NOx output signal correlating with an NOx concentration representing the sum of the concentrations of NO2 and NO. In order to determine the NO2 concentration and/or the concentration ratio of NO2 and NO, the NOx output signal of a first NOx sensor, which is arranged upstream of an exhaust gas treatment element arranged in the exhaust tract and having the capability of converting NO to NO2 and/or converting NO2 to NO, is compared to the NOx output signal of a second NOx sensor, which is disposed downstream of the exhaust gas treatment element.

摘要翻译： 在用于确定诸如内燃机的燃烧装置的排气管中的NO 2浓度和/或NO 2和NO的浓度比的方法中，使用对NO2和NO敏感的NOx传感器，其中 提供与表示NO2和NO的浓度之和的NOx浓度相关的NOx输出信号。 为了确定NO 2浓度和/或NO 2和NO的浓度比，第一NOx传感器的NOx输出信号，其布置在排气管中的废气处理元件的上游并具有转换NO 与NO 2和/或将NO 2转化为NO的比例与排列在废气处理元件下游的第二NOx传感器的NOx输出信号进行比较。

公开(公告)号：US08806851B2

公开(公告)日：2014-08-19

申请号：US12680338

申请日：2008-09-09

申请人： Cyrill Kammer ,  Berthold Keppeler ,  Jochen Lahr ,  Markus Paule ,  Anke Traebert ,  Nicole Werquet ,  Axel Zuschlag

发明人： Cyrill Kammer ,  Berthold Keppeler ,  Jochen Lahr ,  Markus Paule ,  Anke Traebert ,  Nicole Werquet ,  Axel Zuschlag

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/00 ,  F01N2250/12 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： In a method for reducing the emission of nitrogen dioxide in a motor vehicle having an exhaust gas purification system having an SCR catalytic converter with adsorption centers for nitrogen oxides, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter above an operating temperature. Below the operating temperature, the exhaust gas supplied to the SCR catalytic converter is enriched with a material such that an adsorption of nitrogen oxides is inhibited at corresponding adsorption centers of the SCR catalytic converter. In order to reduce the overall NOx emissions below a first, predeterminable amount, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter and the NO2 portion of the total NOx emissions is reduced below a second, predeterminable amount in that NO2 is converted with hydrocarbons stored in the SCR catalytic converter.

摘要翻译： 在具有具有SCR催化转化器的排气净化系统的具有氮氧化物吸附中心的机动车辆的二氧化氮排放的方法中，将富含氨的废气在工作温度以上供给SCR催化剂。 低于工作温度，供应给SCR催化转化器的废气富含一种材料，使得在SCR催化转化器的相应吸附中心抑制氮氧化物的吸附。 为了将总体NOx排放量降低到低于第一可预定量的条件下，向SCR催化转化器供给富含氨的废气，并且将总NO x排放的NO 2部分降低到可转换的NO2以下的可预定量 碳氢化合物储存在SCR催化转化器中。

公开(公告)号：US20110005199A1

公开(公告)日：2011-01-13

申请号：US12680338

申请日：2008-09-09

申请人： Cyrill Kammer ,  Berthold Keppeler ,  Jochen Lahr ,  Markus Paule ,  Anke Traebert ,  Nicole Werquet ,  Axel Zuschlag

发明人： Cyrill Kammer ,  Berthold Keppeler ,  Jochen Lahr ,  Markus Paule ,  Anke Traebert ,  Nicole Werquet ,  Axel Zuschlag

IPC分类号： F01N3/00

CPC分类号： F01N3/208 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/00 ,  F01N2250/12 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

摘要： In a method for reducing the emission of nitrogen dioxide in a motor vehicle having an exhaust gas purification system having an SCR catalytic converter with adsorption centers for nitrogen oxides, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter above an operating temperature. Below the operating temperature, the exhaust gas supplied to the SCR catalytic converter is enriched with a material such that an adsorption of nitrogen oxides is inhibited at corresponding adsorption centers of the SCR catalytic converter. In order to reduce the overall NOx emissions below a first, predeterminable amount, an exhaust gas enriched with ammonia is supplied to the SCR catalytic converter and the NO2 portion of the total NOx emissions is reduced below a second, predeterminable amount in that NO2 is converted with hydrocarbons stored in the SCR catalytic converter.

摘要翻译： 在具有具有SCR催化转化器的排气净化系统的具有氮氧化物吸附中心的机动车辆的二氧化氮排放的方法中，将富含氨的废气在工作温度以上供给SCR催化剂。 低于工作温度，供应给SCR催化转化器的废气富含一种材料，使得在SCR催化转化器的相应吸附中心抑制氮氧化物的吸附。 为了将总体NOx排放量降低到低于第一可预定量的条件下，向SCR催化转化器供给富含氨的废气，并且将总NO x排放的NO 2部分降低到可转换的NO2以下的可预定量 碳氢化合物储存在SCR催化转化器中。

公开(公告)号：US08191413B2

公开(公告)日：2012-06-05

申请号：US12864189

申请日：2008-12-20

申请人： Jochen Lahr ,  Rainer Pauls

发明人： Jochen Lahr ,  Rainer Pauls

IPC分类号： G01M15/10

CPC分类号： G01N33/0037 ,  F02D41/1461 ,  F02D41/1463 ,  G01N33/0024 ,  Y02A50/245 ,  Y02A50/25

摘要： In a method for determining an NO2 concentration and/or a concentration ratio of NO2 and NO in an exhaust tract of a combustion device, such as an internal combustion engine, an NOx sensor that is sensitive with respect to NO2 and NO is utilized, which provides a NOx output signal correlating with an NOx concentration representing the sum of the concentrations of NO2 and NO. In order to determine the NO2 concentration and/or the concentration ratio of NO2 and NO, the NOx output signal of a first NOx sensor, which is arranged upstream of an exhaust gas treatment element arranged in the exhaust tract and having the capability of converting NO to NO2 and/or converting NO2 to NO, is compared to the NOx output signal of a second NOx sensor, which is disposed downstream of the exhaust gas treatment element.

摘要翻译： 在用于确定诸如内燃机的燃烧装置的排气管中的NO 2浓度和/或NO 2和NO的浓度比的方法中，使用对NO2和NO敏感的NOx传感器，其中 提供与表示NO2和NO的浓度之和的NOx浓度相关的NOx输出信号。 为了确定NO 2浓度和/或NO 2和NO的浓度比，第一NOx传感器的NOx输出信号，其布置在排气管中的废气处理元件的上游并具有转换NO 与NO 2和/或将NO 2转化为NO的比例与排列在废气处理元件下游的第二NOx传感器的NOx输出信号进行比较。