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公开(公告)号：US11795848B2
公开(公告)日：2023-10-24
申请号：US17742889
申请日：2022-05-12
CPC分类号： F01N3/0842 , F01N3/035 , F01N3/103 , F01N3/106 , F01N3/2066 , F01N9/00 , F01N13/008 , F01N13/0093 , F01N2240/14 , F01N2250/02 , F01N2560/02 , F01N2560/05 , F01N2560/08 , F01N2570/14 , F01N2610/02 , F01N2610/03 , F01N2900/0416 , F01N2900/1404 , F01N2900/16 , F01N2900/18
摘要： An exhaust gas aftertreatment system includes: a first sensor configured to measure a parameter in the exhaust gas aftertreatment system; a second sensor configured to measure the parameter in the exhaust gas aftertreatment system, the second sensor disposed proximate the first sensor; and at least one controller configured to simultaneously receive sensor values from the first sensor and receive sensor values from the second sensor.
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公开(公告)号：US20190017427A1
公开(公告)日：2019-01-17
申请号：US15647723
申请日：2017-07-12
发明人： Aed M. Dudar
CPC分类号： F01N11/00 , F01N3/023 , F01N9/00 , F01N11/002 , F01N2550/00 , F01N2550/04 , F01N2560/05 , F01N2560/08 , F01N2900/0416 , F02D13/0215 , F02D29/02 , F02D41/029 , F02D41/042 , F02D41/1444 , F02D41/1448 , F02D41/22 , F02D41/222 , F02D2041/001 , F02D2041/223 , F02D2200/0812 , F02D2250/06 , F02D2250/24
摘要： Systems and methods for diagnosing operation of a sensor of an exhaust system are presented. In one example, the systems and methods may diagnose operation of the sensor when an engine is combusting air and fuel. Further, operation of the sensor may be diagnosed when the engine is not combusting air and fuel so that vehicle occupants may not be disturbed by the diagnostic.
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公开(公告)号：US20180348109A1
公开(公告)日：2018-12-06
申请号：US15611218
申请日：2017-06-01
CPC分类号： F01N3/023 , F01N11/00 , F01N2550/22 , F01N2560/05 , F01N2560/20 , F01N2900/0416 , F01N2900/1606 , G01N15/0606 , G01N15/0656 , G01N2015/0046
摘要： A method of operating a particulate matter sensor includes accumulating particulate matter on the sensor, thereby changing resistance between electrodes of the sensor. The sensor provides a signal that varies based upon an amount of the particulate matter on the sensor and includes a measurement cycle that includes a deadband zone in which the resistance is greater than a first predetermined value, followed by an active zone in which the resistance is less than or equal to the first predetermined value, followed by a regeneration zone. A first bias voltage is applied across the electrodes during the deadband zone and a second bias voltage which is less than the first bias voltage is applied across the electrodes during the active zone. An output that is representative of the amount of the particulate matter is calculated after an end of the deadband zone is reached and prior to an end of the measurement cycle.
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公开(公告)号：US20180347437A1
公开(公告)日：2018-12-06
申请号：US16058114
申请日：2018-08-08
发明人： Xiaogang Zhang
CPC分类号： F01N13/008 , F01N2560/05 , G01M15/102 , G01N15/0606 , G01N15/0656 , G01N2015/0046
摘要： Methods and systems are provided for a particulate matter (PM) sensor assembly positioned downstream of a diesel particulate filter in an exhaust system. In one example, a method may include rotating the PM sensor assembly inside an exhaust passage to generate an output, the rotation based on exhaust flow conditions within the exhaust passage. By rotating the PM sensor assembly via a bearing, a rate of soot particulate accumulation on a sensor element of the assembly may be maintained at a desired level, and independent of a direction of exhaust flow inside the exhaust passage.
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公开(公告)号：US20180245499A1
公开(公告)日：2018-08-30
申请号：US15755292
申请日：2015-08-27
CPC分类号： F01N11/00 , B01D46/0086 , B01D46/44 , B01D46/442 , B01D46/446 , B01D2279/30 , F01N3/021 , F01N2550/00 , F01N2550/04 , F01N2560/05 , G01N1/2252 , G01N15/0255 , G01N15/0606 , G01N15/0656 , G01N15/0826 , G01N2015/0046 , G01N2015/0261 , G01N2015/084 , G07C5/0825 , Y02T10/20 , Y02T10/47
摘要： An aftertreatment system comprises a particulate filter configured to filter PM possessing a predetermined, least effective size range included in an exhaust gas flowing through the aftertreatment system. A PM sensor assembly is positioned downstream of the particulate filter and includes a housing having an inlet, an outlet, a sidewall and defines an internal volume. A PM sensor is positioned within the internal volume. The housing is configured to redirect a flow of exhaust gas entering the PM sensor assembly around the PM sensor so that small particles included in the exhaust gas flow having a first size within or smaller than the predetermined size range are directed around the particulate matter sensor. Large particles having a second size larger than the predetermined size range impact the PM sensor. A controller is communicatively coupled to the PM sensor.
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6.发明申请公开(公告)号：US20180094565A1
公开(公告)日：2018-04-05
申请号：US15834841
申请日：2017-12-07
发明人： Jürgen Dingl , Roland Schwarz
CPC分类号： F01N11/002 , F01N3/021 , F01N3/023 , F01N9/002 , F01N2560/05 , F01N2900/08 , F01N2900/1406 , F01N2900/1606 , F02B37/00 , F02D41/0007 , F02D41/029 , F02D41/1402 , F02D2200/0812 , Y02T10/144 , Y02T10/47
摘要： The disclosure relates to a method and a device for determining the load condition of an exhaust gas particulate filter that is arranged in an exhaust gas path of an internal combustion engine that is charged by an exhaust gas turbocharger. The behavior of a charging pressure controller or the charging pressure of the exhaust gas turbocharger is analyzed to determine the load condition of the exhaust gas particulate filter.
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公开(公告)号：US09932878B2
公开(公告)日：2018-04-03
申请号：US15018637
申请日：2016-02-08
发明人： Xiaogang Zhang
IPC分类号： F01N11/00 , F01N13/00 , F01N3/00 , F01N3/021 , G01N15/06 , G01N15/10 , G01M15/10 , G01N15/00
CPC分类号： F01N11/007 , F01N3/2892 , F01N13/008 , F01N2240/20 , F01N2560/05 , G01M15/102 , G01N15/0656 , G01N2015/0046 , Y02A50/2322
摘要： Methods and systems are provided for sensing particulate matter in an exhaust system of a vehicle. An example system comprises a particulate matter sensor inside a tube configured to receive a portion of exhaust gas in an exhaust passage.
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公开(公告)号：US20180073971A1
公开(公告)日：2018-03-15
申请号：US15263894
申请日：2016-09-13
CPC分类号： G01N15/0656 , F01N11/00 , F01N13/18 , F01N2550/04 , F01N2560/05 , F01N2560/20 , G01N15/0606 , G01N29/02 , G01N29/036 , G01N29/2437 , G01N29/4427 , G01N2015/0046 , G01N2291/014 , G01N2291/021 , G01N2291/0217
摘要： A particulate matter sensor assembly including a resistance sensor and a resonance sensor. Each one of the resistance sensor and the resonance sensor is configured to measure particulate matter present in engine exhaust.
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公开(公告)号：US20180073415A1
公开(公告)日：2018-03-15
申请号：US15265994
申请日：2016-09-15
CPC分类号： F01N11/007 , F01N2560/05 , G01M15/102 , G01N15/0606 , G01N15/0656 , G01N2015/0046
摘要： A system includes an exhaust system fluidly configured to define an exhaust stream. A sensor is arranged in the exhaust system and is configured to be exposed to the exhaust stream and accumulate particulate matter on the sensor. The sensor provides a signal that varies based upon an amount of particulate matter on the sensor. A control system is in communication with the sensor. The control system includes a controller configured to calculate a differential of a conductance signal related to the signal, compare consecutive differentials to identify an erroneous differential in an abnormal signal based upon an anomaly relating to the accumulation of the particulate matter, and reconstruct the abnormal signal by correcting the erroneous differential to produce a corrected, decimated conductance signal. The control system is configured to determine a total accumulated particulate matter adjusted for the anomaly.
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公开(公告)号：US09879586B2
公开(公告)日：2018-01-30
申请号：US14649713
申请日：2012-12-07
申请人： Yuriko Hagimoto
发明人： Yuriko Hagimoto
IPC分类号： F01N11/00 , F01N3/023 , F01N3/20 , F01N3/10 , F01N3/28 , F01N9/00 , F01N3/021 , F01N3/025 , F01N3/035 , F01N13/00
CPC分类号： F01N11/00 , F01N3/021 , F01N3/023 , F01N3/025 , F01N3/035 , F01N3/103 , F01N3/2066 , F01N3/208 , F01N3/2892 , F01N9/00 , F01N13/009 , F01N13/0097 , F01N2240/20 , F01N2250/02 , F01N2550/02 , F01N2550/04 , F01N2550/05 , F01N2560/026 , F01N2560/05 , F01N2560/07 , F01N2560/08 , F01N2610/02 , F01N2900/1406 , F01N2900/1606 , F01N2900/1621 , Y02T10/24 , Y02T10/47
摘要： An object of the present invention is to distinguish and detect an abnormality of SCRF and an abnormality of a diffusing device in a system in which a diffusing device is provided for an exhaust gas passage between a filter (SCRF) including an SCR catalyst carried thereon and a reducing agent addition valve. In the present invention, it is judged that which one of abnormalities of any clogging-up of SCRF caused by PM, any breakage of SCRF, and any abnormality of a diffusing device occurs, on the basis of at least any one of a difference between a NOx purification rate of an SCR catalyst carried on SCRF and a predetermined NOx purification rate and a difference between a PM amount flowing out from SCRF and a predetermined outflow PM amount, when a difference, which is provided between an exhaust gas pressure difference as a difference between an exhaust gas pressure on an upstream side from a reducing agent addition valve and an exhaust gas pressure on a downstream side from SCRF and a predetermined exhaust gas pressure difference, exceeds a certain amount.
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