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1. 发明授权

US09097192B2 Method and apparatus for identifying gas sensor faults 有权
标题翻译：用于识别气体传感器故障的方法和装置
公开(公告)号：US09097192B2
公开(公告)日：2015-08-04
申请号：US13047888
申请日：2011-03-15
申请人： Da Yu Wang , David M. Racine , David D. Cabush
发明人： Da Yu Wang , David M. Racine , David D. Cabush
IPC分类号： H03F1/26 , F02D41/14 , F02D41/22 , F01N3/20 , F01N11/00
CPC分类号： F02D41/1441 , F01N3/2066 , F01N11/00 , F01N2560/02 , F02D41/1446 , F02D41/1461 , F02D41/1494 , F02D41/222 , F02D2041/1433 , F02D2041/1468 , F02D2041/228 , Y02T10/40
摘要： A method for fault identification of gas sensors exposed to a gas mixture is disclosed for gas sensors having an output that depends on concentrations of two gas species in the gas mixture. The method includes receiving output signals from two such sensors, processing the output signals in a controller that implements a model of the sensors so as to identify a fault in the first gas sensor or the second gas sensor; and providing an indication of any identified faults.
摘要翻译：公开了一种用于气体传感器的气体传感器的故障识别方法，该气体传感器的输出取决于气体混合物中两种气体种类的浓度。该方法包括从两个这样的传感器接收输出信号，处理实现传感器模型的控制器中的输出信号，以识别第一气体传感器或第二气体传感器中的故障; 并提供任何识别的故障的指示。

2. 发明授权

US07828955B2 Ammonia gas sensors 有权
标题翻译：氨气传感器
公开(公告)号：US07828955B2
公开(公告)日：2010-11-09
申请号：US11483448
申请日：2006-07-10
申请人： Da Yu Wang , Walter T. Symons , Robert J. Farhat , Carlos A. Valdes , Elizabeth M. Briggs , Kaius K. Polikarpus , Joachim Kupe
发明人： Da Yu Wang , Walter T. Symons , Robert J. Farhat , Carlos A. Valdes , Elizabeth M. Briggs , Kaius K. Polikarpus , Joachim Kupe
IPC分类号： G01N27/407
CPC分类号： G01N33/0054 , G01N27/4074 , Y02A50/246
摘要： One embodiment of an ammonia gas sensor includes: a reference electrode, an ammonia selective sensing electrode and an electrolyte disposed therebetween. The sensing electrode comprises the reaction product of a main material selected from the group consisting of vanadium, tungsten, molybdenum, vanadium oxides, tungsten oxides, molybdenum oxides, and combinations comprising at least one of the foregoing main materials, and an electrically conducting material selected from the group consisting of electrically conductive metals, electrically conductive metal oxides, and combinations comprising at least one of the foregoing.
摘要翻译：氨气传感器的一个实施例包括：参比电极，氨选择性感测电极和设置在其间的电解质。感测电极包括选自钒，钨，钼，氧化钒，氧化钨，氧化钼以及包含至少一种前述主要材料的组合的主要材料的反应产物和选择的导电材料来自由导电金属，导电金属氧化物组成的组，以及包含前述的至少一种的组合。

3. 发明授权

US07757478B2 System and method for monitoring operation of an exhaust gas treatment system 有权
标题翻译：用于监测废气处理系统的操作的系统和方法
公开(公告)号：US07757478B2
公开(公告)日：2010-07-20
申请号：US11451939
申请日：2006-06-13
申请人： Da Yu Wang , David D. Cabush
发明人： Da Yu Wang , David D. Cabush
IPC分类号： F01N3/00
CPC分类号： F01N3/2066 , F01N9/00 , F01N11/002 , F01N11/007 , F01N2550/02 , F01N2560/02 , F01N2560/021 , F01N2560/026 , F01N2610/02 , F01N2900/0408 , F02D41/1446 , F02D41/1454 , Y02T10/24 , Y02T10/47
摘要： A system and a method for monitoring operation of an exhaust gas treatment system using an exhaust gas sensor in accordance with an exemplary embodiment is provided. The exhaust gas treatment system has an exhaust pipe configured to receive exhaust gases. The exhaust gas treatment system has an SCR catalyst coupled to the exhaust pipe. The exhaust gas treatment system has a urea delivery system configured to delivery urea upstream of the SCR catalyst. The exhaust gas sensor has an ammonia sensing electrode communicating with exhaust gases downstream of the SCR catalyst. The method includes generating a first output signal utilizing the ammonia sensing electrode, the first output signal being indicative of a first ammonia level. The method further includes generating a second output signal to induce the urea delivery system to deliver a predetermined flow rate of urea upstream of the SCR catalyst. The second output signal is based on the first output signal. The method further includes calculating a first ammonia level range utilizing at least a first engine operating parameter. Finally, the method includes generating a third output signal when the first ammonia level is outside the first ammonia level range. The third output signal indicates at least one of the urea delivery system having degraded operational performance, the SCR catalyst having degraded operational performance, and the exhaust gas sensor having degraded operational performance.
摘要翻译：提供了根据示例性实施例的用于监测使用排气传感器的废气处理系统的操作的系统和方法。排气处理系统具有排气管，该排气管构造成接收排气。排气处理系统具有联接到排气管的SCR催化剂。排气处理系统具有尿素递送系统，其构造成在SCR催化剂的上游输送尿素。排气传感器具有与SCR催化剂下游的废气连通的氨感测电极。该方法包括利用氨检测电极产生第一输出信号，第一输出信号指示第一氨水平。该方法还包括产生第二输出信号以诱导尿素递送系统在SCR催化剂上游输送预定的尿素流量。第二输出信号基于第一输出信号。该方法还包括利用至少第一引擎操作参数来计算第一氨水平范围。最后，该方法包括当第一氨水平位于第一氨水平范围之外时产生第三输出信号。第三输出信号表示具有降低的操作性能的尿素递送系统中的至少一个，SCR催化剂具有降低的操作性能，并且排气传感器具有降低的操作性能。

4. 发明申请

US20100077833A1 EXHAUST GAS SENSOR AND METHOD FOR DETERMINING CONCENTRATIONS OF EXHAUST GAS CONSTITUENTS 有权
标题翻译：废气传感器及其排放气体浓度浓度测定方法
公开(公告)号：US20100077833A1
公开(公告)日：2010-04-01
申请号：US12240354
申请日：2008-09-29
申请人： Da Yu Wang , Walter T. Symons , Robert J. Farhat , Sheng Yao
发明人： Da Yu Wang , Walter T. Symons , Robert J. Farhat , Sheng Yao
IPC分类号： G01N35/00
CPC分类号： G01N33/0037 , G01N33/0054 , Y02A50/245 , Y02A50/246
摘要： An exhaust gas sensor and a method for determining concentrations of exhaust gas constituents are provided. The exhaust gas sensor includes a NO2 Nernst cell that generates a first voltage indicative of a NO2 concentration in the exhaust gases communicating with the NO2 sensing electrode. The exhaust gas sensor further includes a NOx Nernst cell that generates a second voltage indicative of a NOx concentration in the exhaust gases communicating with the NOx sensing electrode. The exhaust gas sensor further includes a NH3 Nernst cell that generates a third voltage indicative of a NH3 concentration in the exhaust gases communicating with the NH3 sensing electrode.
摘要翻译：提供废气传感器和确定废气成分浓度的方法。废气传感器包括产生指示与NO 2感测电极连通的废气中的NO 2浓度的第一电压的NO2能斯特电池。废气传感器还包括NOx能斯特电池，其产生指示与NOx感测电极连通的废气中的NOx浓度的第二电压。废气传感器还包括产生指示与NH 3感测电极连通的废气中的NH 3浓度的第三电压的NH3能斯特电池。

5. 发明申请

US20100032318A1 SYSTEM AND METHOD FOR AMMONIA AND HEAVY HYDROCARBON (HC) SENSING 审中-公开
标题翻译：用于氨和重油（HC）感测的系统和方法
公开(公告)号：US20100032318A1
公开(公告)日：2010-02-11
申请号：US12187870
申请日：2008-08-07
申请人： Da Yu Wang , David Racine , David D. Cabush
发明人： Da Yu Wang , David Racine , David D. Cabush
IPC分类号： G01N27/26
CPC分类号： G01N27/4074
摘要： A gas measurement system includes a sensor element and an associated electronic control unit (ECU) or the like connected thereto for receiving sensor element emf outputs. The ECU is configured to provide output signals or parameters indicative of ammonia and heavy HC gas concentrations. The sensor element has an NH3 sensor electrode output and a NOx sensor electrode output. The information conveyed by the NOx sensor electrode output may be selectively used by the ECU, in accord with so-called emf selection rules, to correct for a cross-interference effect that NO2 has on the NH3 electrode. Heavy HC gas concentrations may cause electrochemical activity on the NH3 electrode, and can be misinterpreted. A further emf selection rule is configured to detect the presence of heavy HC gas and is used by the ECU to suppress an output signal or parameter indicative of an ammonia gas concentration.
摘要翻译：气体测量系统包括传感器元件和连接到其上的相关联的电子控制单元（ECU）等，用于接收传感器元件emf输出。 ECU被配置为提供指示氨和重的HC气体浓度的输出信号或参数。传感器元件具有NH3传感器电极输出和NOx传感器电极输出。根据所谓的电动势选择规则，由NOx传感器电极输出传送的信息可以由ECU选择性地使用，以校正NO 2对NH 3电极的交叉干扰效应。重的HC气体浓度可能导致NH3电极上的电化学活性，并可能被误解。进一步的电动势选择规则被配置为检测重HC气体的存在，并且由ECU用于抑制输出信号或指示氨气浓度的参数。

6. 发明申请

US20100032292A1 AMMONIA GAS SENSOR 审中-公开
标题翻译： AMMONIA气体传感器
公开(公告)号：US20100032292A1
公开(公告)日：2010-02-11
申请号：US12187849
申请日：2008-08-07
申请人： Da Yu Wang , David Racine , David D. Cabush
发明人： Da Yu Wang , David Racine , David D. Cabush
IPC分类号： G01N27/30
CPC分类号： G01N27/4075 , G01N33/0054 , Y02A50/246
摘要： A single-cell sensor element is configured for ammonia gas sensing. The sensor includes an electrolyte layer, an NH3 sensing electrode and a NOx sensing electrode. The NH3 sensing electrode is sensitive to NH3 but is also vulnerable to cross-interference from NO2. To directly correct for this cross-interference, a second (NOx) electrode is provided and is used in a differential connection arrangement with the NH3 sensing electrode. The NOx sensing electrode has a first electrochemical sensitivity to NO2 that is greater than second and third electrochemical sensitivities to NH3 and NO, respectively. The NOx sensing electrode may have low or no sensitivity to NH3 or NO. The sensor element also includes first and second electrical leads respectively connected to the NH3 and NOx sensing electrodes. The output signal developed across the first and second leads is directly indicative of an ammonia concentration in a gas exposed to the NH3 and NOx sensing electrodes, thereby eliminating the need for emf selection rules to be programmed into an electronic controller to which the sensor is connected.
摘要翻译：单电池传感器元件被配置用于氨气感测。传感器包括电解质层，NH3感测电极和NOx感测电极。 NH3感应电极对NH3敏感，但也容易受到NO2的交叉干扰。为了直接纠正这种交叉干扰，提供了第二（NOx）电极，并用于与NH3感测电极的差分连接装置。 NOx感测电极对NO 2具有对NH 3和NO分别大于第二和第三电化学敏感性的第一电化学敏感性。 NOx感测电极对NH 3或NO可能具有低或不敏感性。传感器元件还包括分别连接到NH 3和NO x感测电极的第一和第二电引线。跨越第一和第二引线产生的输出信号直接表示暴露于NH3和NOx感测电极的气体中的氨浓度，从而不需要将编程到传感器连接到的电子控制器中的电动势选择规则。

7. 发明申请

US20090241653A1 EXHAUST GAS SENSING SYSTEM AND METHODS FOR SENSING CONCENTRATIONS OF EXHAUST GAS CONSTITUENTS 审中-公开
标题翻译：排气检测系统及排气浓度感测方法
公开(公告)号：US20090241653A1
公开(公告)日：2009-10-01
申请号：US12056789
申请日：2008-03-27
申请人： Da Yu Wang , David D. Cabush
发明人： Da Yu Wang , David D. Cabush
IPC分类号： G01M15/10
CPC分类号： G01M15/102
摘要： Exhaust gas sensing system and methods for sensing concentrations of exhaust gas constituents are provided. The exhaust gas sensing system includes a NOx sensing cell configured to generate a voltage in response to exhaust gases communicating with the NOx sensing cell. The exhaust gas sensing system further includes a temperature sensor configured to generate a signal indicative of a temperature of the exhaust gases. The exhaust gas sensing system further includes a controller configured to receive the voltage from the NOx sensing cell and to determine a first NOx value based on the voltage. The controller is further configured to receive the signal from the temperature sensor and to determine a temperature value based on the signal. The controller is further configured to determine a NO2 concentration value indicative of an amount of NO2 in the exhaust gases based on the first NOx value and the temperature value, and to store the NO2 concentration value in a memory device. The controller is further configured to determine a NOx concentration value indicative of an amount of NOx in the exhaust gases based on the NO2 concentration value and the temperature value, and to store the NOx concentration value in the memory device.
摘要翻译：提供废气感测系统和用于感测废气成分浓度的方法。排气感测系统包括被配置为响应于与NOx感测单元连通的废气产生电压的NOx感测单元。排气感测系统还包括配置成产生指示排气温度的信号的温度传感器。排气感测系统还包括控制器，其被配置为从NOx感测单元接收电压并且基于该电压来确定第一NOx值。控制器还被配置为从温度传感器接收信号并且基于该信号来确定温度值。控制器还被配置为基于第一NOx值和温度值来确定指示排气中的NO 2量的NO 2浓度值，并将NO 2浓度值存储在存储器件中。控制器还被配置为基于NO 2浓度值和温度值来确定表示排气中的NOx的量的NOx浓度值，并将NOx浓度值存储在存储装置中。

8. 发明授权

US07294252B2 NOx sensor and methods of using the same 有权
标题翻译： NOx传感器及其使用方法
公开(公告)号：US07294252B2
公开(公告)日：2007-11-13
申请号：US11538252
申请日：2006-10-03
申请人： Da Yu Wang , Walter T. Symons , Robert Jerome Farhat , Sheng Yao , Joachim Kupe
发明人： Da Yu Wang , Walter T. Symons , Robert Jerome Farhat , Sheng Yao , Joachim Kupe
IPC分类号： G01N27/407
CPC分类号： G01N33/0037 , G01N27/4074 , Y02A50/245
摘要： Disclosed herein are NOx sensors and methods of using the same. In one embodiment, a method for sensing NOx comprises: contacting a first NOx electrode with the gas, contacting a second NOx electrode with the gas, determining a NO2 emf between the first NOX electrode and a first reference electrode, determining a NOx emf between the second NOx electrode and a second reference electrode, and determining a NO2 concentration and a NO concentration using the NO2 emf and the NOx emf. The first electrode can be at a first temperature of greater than or equal to about 700° C., and the second electrode can be at a second temperature of about 500° C. to about 650° C.
摘要翻译：本文公开了NOx传感器及其使用方法。在一个实施例中，用于感测NOx的方法包括：使第一NOx电极与气体接触，使第二NOx电极与气体接触，确定第一NO x电极和第一参考电极之间的NO 2 电极，确定第二NOx电极和第二参比电极之间的NOx电动势，以及使用NO 2 2 emf和NO x emf确定NO 2浓度和NO浓度。第一电极可以处于大于或等于约700℃的第一温度，并且第二电极可以处于约500℃至约650℃的第二温度。

9. 发明授权

US07244316B2 Methods of making gas sensors and sensors formed therefrom 有权
标题翻译：制造气体传感器和传感器的方法
公开(公告)号：US07244316B2
公开(公告)日：2007-07-17
申请号：US10439137
申请日：2003-05-15
申请人： Kailash Jain , Kenneth Rahmoeller , Da Yu Wang , Eric Clyde , Paul Kikuchi
发明人： Kailash Jain , Kenneth Rahmoeller , Da Yu Wang , Eric Clyde , Paul Kikuchi
IPC分类号： B08B3/04 , G01N27/407
CPC分类号： G01N27/407
摘要： A two-step chemical treatment method for chemically conditioning a sensor element comprising an electrolyte in ionic communication with a first electrode and a second electrode is described. The method comprises treating at least a portion of a sensor element with a first solution comprising an inorganic base, a carbonate salt and an acid salt; heating the sensor element; treating at least a portion of the sensor element with a second solution comprising an inorganic base and a carbonate salt; and drying the sensor element. The gas sensors comprising the two-step treated sensor elements have reduced lean shift, green effect, sensor output amplitude drop, and the light-off time is improved.
摘要翻译：描述了用于化学调理包含与第一电极和第二电极离子连通的电解质的传感器元件的两步化学处理方法。该方法包括用包含无机碱，碳酸盐和酸盐的第一溶液处理传感器元件的至少一部分; 加热传感器元件; 用包含无机碱和碳酸盐的第二溶液处理所述传感器元件的至少一部分; 并干燥传感器元件。包括两步处理的传感器元件的气体传感器具有减少的偏移，绿色效果，传感器输出幅度下降，并且提高熄灭时间。

10. 发明授权

US07048844B2 Gas sensor and method for use thereof 失效
标题翻译：气体传感器及其使用方法
公开(公告)号：US07048844B2
公开(公告)日：2006-05-23
申请号：US10295338
申请日：2002-11-15
申请人： David K. Chen , Da Yu Wang , Yingjie Lin , Raymond L. Bloink , Devesh Srivastava , Walter T. Symons , Kaius K. Polikarpus
发明人： David K. Chen , Da Yu Wang , Yingjie Lin , Raymond L. Bloink , Devesh Srivastava , Walter T. Symons , Kaius K. Polikarpus
IPC分类号： G01N27/407
CPC分类号： G01N27/419
摘要： A sensor comprises: a pump cell comprising an inner pump electrode, an outer pump electrode, a pump cell electrolyte layer interposed between the inner pump electrode and the outer pump electrode and a cell isolation layer disposed on the inner pump electrode on a side opposite the pump cell electrolyte, wherein the outer electrode is in fluid communication with a reducing gas. A reference cell is in operable communication with the pump cell, the reference cell comprising an outer reference electrode and an inner reference electrode, and a reference cell electrolyte interposed between the outer reference electrode and the inner reference electrode. A diffusion limiting material flanks both sides of a chamber formed between the cell isolation layer and a cell separation layer, wherein the cell separation layer comprises a via coaxial and in fluid communication with the inner pump electrode, the diffusing limiting material, and the outer reference electrode, and wherein the diffusion limiting material has a gas permeability such that the limiting current of oxygen in air is about 0.05 mA to about 5 mA per cm2 of pump electrode area.
摘要翻译：传感器包括：泵电池，包括内泵电极，外泵电极，介于内泵电极和外泵电极之间的泵电池电解质层，以及设置在内泵电极上的电池隔离层泵电池电解质，其中外电极与还原气体流体连通。参考单元与泵浦单元可操作地通信，该参考单元包括外部参考电极和内部参考电极以及介于外部参考电极和内部参考电极之间的参考单元电解质。扩散限制材料在形成在细胞隔离层和细胞分离层之间的室的两侧侧面，其中细胞分离层包括通孔同轴并与内泵电极，扩散限制材料和外参考物流体连通电极，并且其中所述扩散限制材料具有气体渗透性，使得空气中的氧气的极限电流为约0.02mA至约5mA / cm 2的泵电极区域。

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