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公开(公告)号：US20230141121A1
公开(公告)日：2023-05-11
申请号：US17970809
申请日：2022-10-21
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： June Hwan Jang
Abstract: An embodiment apparatus for reducing fouling of an exhaust gas recirculation (EGR) cooler includes an exhaust gas transfer part configured to connect a diesel oxidation catalyst (DOC) of an exhaust gas post-treatment system extending from an engine through an exhaust line to an EGR cooler installed in an EGR line and configured to recirculate exhaust gas discharged from an exhaust manifold to an intake manifold, a valve installed in the exhaust gas transfer part, and a controller configured to selectively open the valve as the exhaust gas post-treatment system enters a predetermined diesel particulate filter (DPF) regeneration condition and allow exhaust gas discharged from the DOC to be supplied to the EGR cooler through the exhaust gas transfer part.
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公开(公告)号：US20210199065A1
公开(公告)日：2021-07-01
申请号：US17058442
申请日：2018-06-06
Applicant: VOLVO TRUCK CORPORATION
Inventor： Patrick RODRIGUES , Benjamin JACQUET
Abstract: A method for estimating the ageing of an exhaust gas sensor (16) placed in an exhaust line (14) of a diesel internal combustion engine (10) of an industrial vehicle (1) includes—acquiring (S100) an initial value of an estimated remaining lifetime (50) of the exhaust gas sensor;—measuring (S102) the time spent by the engine in each of several predefined engine operation modes during a predefined time period;—for each of the engine operation modes, calculating (S104) a lifetime loss value depending on the time spent by the engine in said engine operation mode during the predefined time period and on a predefined ageing rate associated to said engine operation mode;—updating (S106) the estimated remaining lifetime value by subtracting each calculated lifetime loss value from the initial value.
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公开(公告)号：US20210040922A1
公开(公告)日：2021-02-11
申请号：US16531463
申请日：2019-08-05
Applicant: Caterpillar Inc.
Inventor： Ronald Silver , Jaswinder Singh , David M. Ginter , Paul Wang , Michael Bardell
Abstract: The present disclosure relates to exhaust treatment systems and engine systems. In one implementation, an engine system comprises an engine comprising an intake manifold and an exhaust manifold, the engine configured to combust a fuel-air mixture received via the intake manifold and produce a flow of exhaust gases via the exhaust manifold. The engine system also comprises a turbocharger comprising a turbine, an exhaust passageway fluidly connecting the exhaust manifold of the engine to the turbine and an intake passageway fluidly connected to the intake manifold of the engine for supplying the fuel-air mixture, a catalyzed member positioned along the exhaust passageway between the engine and the turbine, and an exhaust gas recirculation (EGR) loop fluidly connected downstream of the catalyzed member and fluidly connected to the exhaust passageway and the intake passageway.
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公开(公告)号：US10519891B2
公开(公告)日：2019-12-31
申请号：US15771335
申请日：2016-10-05
Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
Inventor： Hiroaki Hoshika , Takeo Hosokawa
Abstract: In order to provide a highly precise and highly responsive humidity detection means with which diagnosis is easy, this control device for an internal combustion engine is characterized in that two or more sensors for detecting the humidity of the atmosphere or a gas mixed with the atmosphere are provided in the middle of the flow in an intake air passage of the internal combustion engine, at least one of these sensors being a relative humidity sensor for detecting the relative humidity, at least one other of the sensors being an absolute humidity sensor for detecting the absolute humidity, and the relative humidity sensor being arranged upstream from the absolute humidity sensor.
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35.发明申请公开(公告)号：US20190331068A1
公开(公告)日：2019-10-31
申请号：US15962609
申请日：2018-04-25
Applicant: Tamer Badawy , Kaustabh Pethe , Lurun Zhong
Inventor： Tamer Badawy , Kaustabh Pethe , Lurun Zhong
Abstract: Diagnostic systems and methods for detecting leaks in an exhaust gas recirculation (EGR) system of an engine of a vehicle utilize an upstream oxygen (O2) sensor disposed in an exhaust system of the engine upstream from an EGR port of the EGR system and configured to measure an upstream O2 concentration of exhaust gas produced by the engine, a downstream O2 sensor disposed in the exhaust system downstream from the EGR port and configured to measure a downstream O2 concentration of the exhaust gas, and a controller configured to receive the measured upstream and downstream O2 concentrations from the upstream and downstream O2 sensors, respectively, and detect a leak in the EGR system when a difference between the measured downstream and upstream O2 concentrations exceeds a diagnostic threshold.
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Patent Agency Ranking
公开(公告)号：US10330034B2
公开(公告)日：2019-06-25
申请号：US15495403
申请日：2017-04-24
Applicant: Ford Global Technologies, LLC
Inventor： Thomas Alan Brewbaker , Christian Winge Vigild , Daniel Roettger , Michiel J. Van Nieuwstadt
Abstract: A device for predicting an exhaust gas recirculation rate of an internal combustion engine, which comprises an inlet system and at least one exhaust gas recirculation valve, is described. The device comprises a sensor arranged in the inlet system for determining the composition of the gas, a sensor for determining the position of the exhaust gas recirculation valve, and an evaluation apparatus. The evaluation apparatus is configured to determine and output a prediction of the exhaust gas recirculation rate based on a corrected estimate of the exhaust gas recirculation rate, wherein the estimate is based on the position of the exhaust gas recirculation valve and is corrected based on the composition of the gas as determined using the sensor.
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公开(公告)号：US10233809B2
公开(公告)日：2019-03-19
申请号：US14487463
申请日：2014-09-16
Applicant: Southwest Research Institute
Inventor： Cary A. Henry
Abstract: A method to process exhaust gas expelled from at least one cylinder of a plurality of cylinders of an internal combustion engine, the method comprising providing an internal combustion engine, wherein the engine comprises a steam hydrocarbon reformer including a steam reformation catalyst, treating exhaust gas of the engine containing hydrocarbon and water by reacting the hydrocarbon and water in the presence of the steam reformation catalyst in the steam hydrocarbon reformer to provide treated exhaust gas. The treated exhaust gas includes carbon monoxide gas and hydrogen gas produced from the reaction, and mixing the treated exhaust gas, including the carbon monoxide gas and hydrogen gas produced in the steam hydrocarbon reformer with air to provide the mixture of air and treated exhaust gas introduced into the cylinders of the engine.
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公开(公告)号：US20190010885A1
公开(公告)日：2019-01-10
申请号：US15644419
申请日：2017-07-07
Applicant: Ford Global Technologies, LLC
Inventor： Aed M. Dudar
Abstract: Methods and systems are provided for a diagnostic of a humidity sensor positioned in an intake of an engine and adjusting engine operation responsive to findings of the diagnostic. In one example, the method may include sealing a vehicle exhaust system of an engine, combusting fuel at cylinders of the engine while flowing gases through the engine in a first direction, and then, flowing the combusted exhaust gases through the engine in a reverse, second direction to the humidity sensor positioned in the intake. The method may further include indicating degradation of the humidity sensor based on the output of the humidity sensor while flowing gases in the first and second directions.
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39.发明授权公开(公告)号：US09920699B1
公开(公告)日：2018-03-20
申请号：US15298016
申请日：2016-10-19
Applicant: Ford Global Technologies, LLC
Inventor： Michael McQuillen , Gopichandra Surnilla , Daniel A. Makled , Richard E. Soltis
CPC classification number: F02D41/0072 , F02D19/0636 , F02D19/084 , F02D19/088 , F02D41/0025 , F02D41/08 , F02D41/123 , F02D41/1454 , F02D2041/1472 , F02M26/46
Abstract: Methods and systems are provided for estimating an amount of exhaust gas recirculation (EGR) from an exhaust passage into an intake passage of an engine system by operating an exhaust oxygen sensor in a variable voltage (VVs) mode. In one example, a method includes during operation of an exhaust oxygen sensor in the VVs mode where a reference voltage of the exhaust oxygen sensor is adjusted from a lower, first voltage to a higher, second voltage, adjusting engine operation based on the EGR amount estimated based on an output of the exhaust oxygen sensor and a learned correction factor based on the second voltage. In this way, the exhaust oxygen sensor may be used to correct for variations arising due to changing fuel composition and ambient humidity and further used to estimate the amount of EGR being recirculated in the system, thereby enhancing engine fueling and EGR control.
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公开(公告)号：US20170314483A1
公开(公告)日：2017-11-02
申请号：US15495403
申请日：2017-04-24
Applicant: Ford Global Technologies, LLC
Inventor： Thomas Alan Brewbaker , Christian Winge Vigild , Daniel Roettger , Michiel J. Van Nieuwstadt
IPC: F02D41/00 , F02M35/10 , F02M35/024 , F02M26/06 , F02M26/46
CPC classification number: F02D41/0072 , F02D41/144 , F02D41/1448 , F02D41/1454 , F02D41/18 , F02D2200/0406 , F02D2200/0414 , F02D2200/101 , F02M26/06 , F02M26/46 , F02M35/024 , F02M35/1038 , F02M35/10386 , Y02T10/47
Abstract: A device for predicting an exhaust gas recirculation rate of an internal combustion engine, which comprises an inlet system and at least one exhaust gas recirculation valve, is described. The device comprises a sensor arranged in the inlet system for determining the composition of the gas, a sensor for determining the position of the exhaust gas recirculation valve, and an evaluation apparatus. The evaluation apparatus is configured to determine and output a prediction of the exhaust gas recirculation rate based on a corrected estimate of the exhaust gas recirculation rate, wherein the estimate is based on the position of the exhaust gas recirculation valve and is corrected based on the composition of the gas as determined using the sensor.
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