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公开(公告)号：US09752958B2
公开(公告)日：2017-09-05
申请号：US14481210
申请日：2014-09-09
发明人： Katsunori Yazawa , Yoshinori Inoue
CPC分类号： G01M15/104 , F01N11/00 , F01N2550/00 , F01N2560/025 , F01N2560/20 , F01N2900/0602 , F02D41/221 , F02D41/222 , F02P19/022 , F02P19/027 , G01R31/024 , G01R31/40 , H02M3/156 , Y02T10/40 , Y02T10/47
摘要： A load drive apparatus (1) includes a pulse drive circuit (51) which applies a pulse voltage PS to a resistive load (4); current detection means (S14) for detecting the current flowing to the resistive load (4) through the pulse drive circuit (51); level detection means (S1, S7) for determining whether an output terminal voltage VD of the pulse drive circuit (51) is a high potential level or a low potential level; anomaly detection means (S8, S9, S18) for detecting a wire breakage anomaly, a short-to-power anomaly, and a short-to-ground anomaly based on the level of the output terminal voltage VD detected by the level detection means (S1, S7) and the current detected by the current detection means (S14), when the pulse drive circuit 51 is turned on and off.
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公开(公告)号：US20170241321A1
公开(公告)日：2017-08-24
申请号：US15589778
申请日：2017-05-08
CPC分类号： F01N11/00 , F01N3/2066 , F01N2550/00 , F01N2560/026 , F01N2610/02 , F01N2900/104 , F01N2900/1402 , F01N2900/1602 , F01N2900/1622 , G01M15/102 , G01N33/0037 , G01N33/007 , Y02A50/2325 , Y02A50/245 , Y02T10/24 , Y02T10/47
摘要： Methods and systems are provided for detecting NOx sensor degradation based on results from a NOx sensor self-diagnostic (SD) test performed after a key-off event. In one example, a method may comprise waiting a duration to perform a SD test of a NOx sensor after a key-off event until engine operating conditions stabilize and reach a set of qualifying conditions. One or more SD tests may be performed after waiting the duration, but outputs generated under conditions where one or more of a temperature at the sensor is greater than a threshold, and an oxygen concentration is outside a threshold range, may be excluded when determining whether or not the NOx sensor is degraded.
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公开(公告)号：US20170234707A1
公开(公告)日：2017-08-17
申请号：US15430492
申请日：2017-02-12
申请人： Leo Breton
发明人： Leo Breton
CPC分类号： G01F1/46 , F01N11/00 , F01N13/008 , F01N2560/02 , F01N2560/022 , F01N2560/023 , F01N2560/05 , F01N2560/07 , F01N2900/08 , F01N2900/10 , F01N2900/1411 , G01M15/10 , G01N21/3504 , G01N21/8507 , G01N33/0036 , Y02T10/47
摘要： A chemical species mass flow meter measurement system for use in fluid mixture streams includes a chemical species concentration detection analyzer physically located within a fluid volume flow rate sensing probe along with bulk temperature and pressure sensing devices for relating to standard conditions. The system uses concentration detection analyzers specifically suited to the intended application. Applications include the measurement of exhaust mass emissions from vehicles, the fuel economy of vehicles, as well as the measurement of the mass flow rate of chemical species of interest in general industrial processes.
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74.发明申请公开(公告)号：US20170232381A1
公开(公告)日：2017-08-17
申请号：US15431579
申请日：2017-02-13
CPC分类号： B01D53/24 , B01D45/08 , B01D45/12 , B01D45/16 , B01D50/002 , B01D53/22 , B01D53/30 , B01D2256/10 , B01D2256/12 , B01D2259/4566 , B04C3/06 , C01B13/0248 , F01N11/00 , F01P1/06 , F02B1/04 , F02D19/12 , F02D41/0025 , F02D41/1444 , F02D41/1454 , F02M25/12 , F02M33/00 , F23L7/007 , Y02E20/344 , Y02T10/121
摘要： The specification and drawings present a new apparatus and method for a partial gas separation technique which can be used, e.g., for continuously providing, using a predefined atmospheric air (normally atmospheric air comprises 78% of nitrogen N2 and 21% of oxygen O2), oxygen-enriched gas/air and/or nitrogen-enriched gas/air in fossil-fueled combustion devices/systems to a combustion area/chamber and the like for improving combustion, exhaust and related properties of the apparatus. The partial gas separation technique can be based on forming a predefined directional pattern of a gas mixture of a plurality of gases, using a direction forming element, subsequently moving an output gas from the direction forming element at least along/against one surface of a gas separation element to spatially separate in part the plurality of gases having different molecular weights.
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公开(公告)号：US09724643B2
公开(公告)日：2017-08-08
申请号：US14354861
申请日：2012-09-27
发明人： Ko Takayanagi , Keisuke Okuda , Ryo Sase
CPC分类号： B01D53/94 , F01N9/002 , F01N11/00 , F01N2550/04 , F01N2560/06 , F01N2560/07 , F01N2560/08 , F01N2900/0412 , F01N2900/0416 , F01N2900/08 , F01N2900/1606 , F02D41/029 , F02D41/222 , F02D2200/0812 , Y02T10/47
摘要： An exhaust gas purification system of engine configured to classify a PM accumulation state of DPF into multiple evaluation stages based on a plurality of evaluation indices, and to repeatedly perform determination of the current evaluation stage by the current stage determination part and determination of whether to move up the current evaluation stage to the evaluation stage of the next rank by the evaluation stage determination part, wherein upon a defect of a sensor among different types of sensors being detected by the defect detection part, the current evaluation stage is newly redetermined by the current stage redetermination part as substituted for the current evaluation stage determined by the current stage determination part.
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公开(公告)号：US20170218828A1
公开(公告)日：2017-08-03
申请号：US15417366
申请日：2017-01-27
申请人： Robert Bosch GmbH
发明人： Frank Schweizer
CPC分类号： F01N11/00 , B01D53/9418 , B01D53/9495 , B01D2251/2062 , F01N3/208 , F01N9/00 , F01N13/009 , F01N2550/05 , F01N2610/02 , F01N2900/0402 , F01N2900/1616 , F01N2900/1824 , G01F1/78 , G01F9/00 , G01N11/02 , Y02T10/47
摘要： A method for determining a mass flow of ammonia between two SCR catalytic converters disposed one after the other in an SCR catalytic converter system in an exhaust system, which comprises only one reduction agent dosing unit upstream of the first SCR catalytic converter, characterized in that the determination is carried out from the signal of a NOx sensor disposed between the two SCR catalytic converters and the signal of a NOx sensor disposed downstream of the second SCR catalytic converter.
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公开(公告)号：US09708959B2
公开(公告)日：2017-07-18
申请号：US13940140
申请日：2013-07-11
IPC分类号： F01N11/00 , G01F23/296 , F01N3/20
CPC分类号： F01N11/00 , F01N3/208 , F01N2610/02 , F01N2610/142 , F01N2900/1814 , G01F23/296 , Y02A50/2325 , Y02T10/47
摘要： Methods are provided for determining an exhaust fluid level in an exhaust fluid storage tank based on a signal, and a quality of the signal from an exhaust fluid level sensor located in the exhaust fluid tank of a vehicle.
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公开(公告)号：US09708953B1
公开(公告)日：2017-07-18
申请号：US15057226
申请日：2016-03-01
CPC分类号： F01N3/2066 , F01N3/035 , F01N3/103 , F01N11/00 , F01N2550/02 , F01N2560/026 , F01N2560/14 , F01N2900/0416 , F01N2900/1602 , F02M26/00 , F02M2026/001 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： Methods and apparatuses for monitoring an oxidation catalyst in a vehicle exhaust system include a diesel internal combustion engine with an exhaust system that has an EGR, a DOC/DPF downstream from the EGR, an SCR catalyst downstream of the DOC/DPF, a first NOx sensor located upstream of the DOC/DPF, and a second NOx sensor located downstream of the SCR catalyst. A monitoring cycle of the exhaust system during operation of the diesel ICE includes executing a DPF regeneration event, shutting off the EGR, terminating urea dosing to the SCR catalyst, emptying NH3 storage in the SCR catalyst, and intrusively maintaining the temperature of the DOC/DPF within a predetermined temperature range. Readings from the first NOx sensor and the second NOx sensor allow for a ratio between first NOx sensor readings and second NOx sensor readings, the ratio providing an indication as to whether or not the DOC/DPF is failing or operating properly.
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公开(公告)号：US09702293B2
公开(公告)日：2017-07-11
申请号：US15021456
申请日：2014-09-18
申请人： ISUZU MOTORS LIMITED
IPC分类号： F01N3/00 , F01N3/02 , F01N11/00 , F01N3/10 , F01N13/00 , F01N9/00 , F01N3/021 , F01N3/023 , F01N3/025
CPC分类号： F01N11/002 , F01N3/021 , F01N3/023 , F01N3/0253 , F01N3/103 , F01N9/00 , F01N11/00 , F01N13/009 , F01N2430/06 , F01N2550/02 , F01N2590/08 , F01N2610/03 , F01N2900/1631 , Y02T10/47
摘要： A diagnostic device includes: a DOC for oxidizing hydrocarbon (HC) contained in an exhaust gas; a first sensor for detecting an exhaust gas temperature at a DOC inlet; a second sensor for detecting an exhaust gas temperature at a DOC outlet; a third sensor for detecting ambient temperature; an HC heat generation rate calculation unit which calculates, based on detection values of the first and second sensors, a difference in an exhaust gas heat quantity between upstream and downstream sides of the DOC, calculates, based on the detection values of the three sensors, a heat loss quantity released to outside air from the DOC, and adds the heat loss quantity and the exhaust gas heat quantity difference to calculate a heat generation quantity of HC in the DOC; and a DOC deterioration determination unit which determines, based on the calculated HC heat generation quantity, deterioration of the DOC.
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公开(公告)号：US20170191394A1
公开(公告)日：2017-07-06
申请号：US15309774
申请日：2015-04-28
申请人： ISUZU MOTORS LIMITED
CPC分类号： F01N3/208 , B01D53/9418 , B01D53/9495 , F01N3/00 , F01N3/08 , F01N3/18 , F01N3/2066 , F01N3/2073 , F01N11/00 , F01N11/007 , F01N13/008 , F01N2550/05 , F01N2560/026 , F01N2610/02 , F01N2610/146 , F01N2900/0416 , F01N2900/0418 , F01N2900/1616 , Y02T10/47
摘要： An exhaust purification system that includes a selective catalytic reduction to purify NOx contained in an exhaust gas by using ammonia produced from urea water and an NOx sensor to acquire a value of the NOx contained in the exhaust gas, and the exhaust purification system includes: a reach time measurement unit that measures a reach time of the NOx value acquired by the NOx sensor, the reach time being a required time for the NOx value to reach, from a first predetermined determinative NOx value, a second predetermined determinative NOx value, which is higher than the first determinative NOx value; and a determination unit that determines that malfunction occurs in the NOx sensor when the reach time measured by the reach time measurement unit is equal to or shorter than a first predetermined determinative time.
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