公开(公告)号：US20230399991A1

公开(公告)日：2023-12-14

申请号：US18325317

申请日：2023-05-30

申请人： SUBARU CORPORATION

发明人： Takumi INABA

IPC分类号： F02D41/02

CPC分类号： F02D41/025 ,  F02D2200/0802

摘要： A control apparatus for an internal combustion engine configured to perform control to remove a combustible residue adhered to an exhaust path of the internal combustion engine includes one or more processors and one or more memories communicatively coupled to the one or more processors. The one or more processors are configured to: obtain information on an exhaust temperature at a predetermined position in the exhaust path during operation of the internal combustion engine; determine whether the exhaust temperature or a predetermined reference temperature obtained based on the exhaust temperature has exceeded a threshold; and, when the exhaust temperature or the reference temperature has exceeded the threshold, increase an amount of oxygen to be supplied to the exhaust path to forcibly combust the combustible residue.

公开(公告)号：US20190186315A1

公开(公告)日：2019-06-20

申请号：US16212839

申请日：2018-12-07

申请人： KUBOTA Corporation

发明人： Katsushi INOUE ,  Hiroaki OKANO ,  Masanori FUJIWARA

IPC分类号： F01N3/023 ,  F01N9/00 ,  F01N3/025 ,  F01N3/035 ,  F01N11/00

CPC分类号： F01N3/0235 ,  F01N3/0253 ,  F01N3/035 ,  F01N9/002 ,  F01N11/002 ,  F01N2240/36 ,  F01N2430/06 ,  F01N2560/06 ,  F01N2900/0416 ,  F01N2900/1404 ,  F01N2900/1602 ,  F01N2900/1626 ,  F01P3/20 ,  F01P2060/00 ,  F02D9/04 ,  F02D41/025 ,  F02D41/029 ,  F02D43/00 ,  F02D2200/0802

摘要： An engine promoting DPF regeneration processing is provided. Catalyst activation processing and thereafter DPF regeneration processing are performed under control of a device. In the catalyst activation processing, a target temperature of exhaust at an exhaust exit of a catalyst is set to be in a first temperature region, and then the opening degree of an exhaust throttle device is controlled. In the DPF regeneration processing, the target temperature is set to be in a second temperature region. A target temperature of the exhaust at an exhaust inlet of a DPF is set to be in a third temperature region. The opening degree of the exhaust throttle device is controlled, and unburned fuel is supplied into the exhaust. The temperature regions are set to be successively higher, and a temperature difference between successive temperature regions is set to be successively lower.

公开(公告)号：US20190048815A1

公开(公告)日：2019-02-14

申请号：US16058127

申请日：2018-08-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Keiichi MYOJO ,  Yuki NOSE ,  Eiji IKUTA

IPC分类号： F02D41/02 ,  F01N3/10 ,  F02M25/08 ,  F02D41/00

CPC分类号： F02D41/025 ,  F01N3/101 ,  F01N9/00 ,  F01N2260/04 ,  F01N2430/06 ,  F01N2560/025 ,  F01N2570/04 ,  F01N2900/1404 ,  F01N2900/1612 ,  F02D41/0035 ,  F02D2200/021 ,  F02D2200/04 ,  F02D2200/0802 ,  F02M25/08 ,  F02M2025/0845

摘要： A controller for an internal combustion engine includes processing circuitry that performs a dither control process on condition that a temperature increase request of a catalyst is made. The processing circuitry operates fuel injection valves so that during the dither control process, one or more cylinders are lean combustion cylinders in a first period and another one or more cylinders are rich combustion cylinders and so that the average value of an exhaust gas-fuel ratio is a target air-fuel ratio in a second period including the first period. The dither control process is restricted in a manner that, on condition that the rich process is performed, the degree of richening of the richest exhaust gas-fuel ratio of exhaust gas-fuel ratios in the cylinders is reduced.

公开(公告)号：US20190010843A1

公开(公告)日：2019-01-10

申请号：US13643664

申请日：2011-04-25

申请人： YANMAR CO., LTD

发明人： Kenta SAITOU

IPC分类号： F01N3/023 ,  F01N3/033 ,  F01N3/035 ,  F01N13/00 ,  F01N9/00 ,  F02D41/02 ,  F02D41/14

CPC分类号： F01N3/0235 ,  F01N3/0253 ,  F01N3/0335 ,  F01N3/035 ,  F01N9/002 ,  F01N13/0097 ,  F01N2550/04 ,  F01N2900/1602 ,  F02D41/0002 ,  F02D41/021 ,  F02D41/025 ,  F02D41/029 ,  F02D41/1448 ,  F02D41/405 ,  F02D2200/0802 ,  F02D2200/0812 ,  Y02T10/26 ,  Y02T10/47

摘要： An exhaust gas purification system of a working machine is operable to reduce a loss of a working time caused by a point that it takes a long time to renew an exhaust gas purification device by throttle devices. The exhaust gas purification system of the working machine is provided with a common rail type engine which is mounted to the working machine, an exhaust gas purification device which is arranged in an exhaust system of the engine, and at least one of the intake air throttle device and the exhaust gas throttle device. It is provided with mode selection input means which selects whether an auxiliary renewing mode is executed or a forced renewing mode is executed in the case that a clogged state of the exhaust gas purification device is equal to or more than a prescribed level.

公开(公告)号：US20180334972A1

公开(公告)日：2018-11-22

申请号：US15755884

申请日：2016-08-31

申请人： VOLKSWAGEN AKTIENGESELLSCHAFT

发明人： Stefan PAUKNER

IPC分类号： F02D41/00 ,  F02D41/30 ,  F01N3/10 ,  F01N3/20 ,  F02D13/02 ,  B01D53/94 ,  F02D41/14 ,  F01N11/00 ,  F01N13/00

CPC分类号： F02D41/0007 ,  B01D53/9454 ,  B01D53/9495 ,  F01N3/101 ,  F01N3/2033 ,  F01N3/206 ,  F01N11/007 ,  F01N13/008 ,  F01N13/0093 ,  F01N2560/025 ,  F01N2610/03 ,  F02D13/0261 ,  F02D41/0245 ,  F02D41/025 ,  F02D41/1454 ,  F02D41/3017 ,  F02D2041/001 ,  Y02T10/144 ,  Y02T10/22 ,  Y02T10/26

摘要： The invention relates to a method for the exhaust-gas aftertreatment of an internal combustion engine (10), and to an internal combustion engine (10) having an exhaust-gas aftertreatment device for carrying out a method of said type. The internal combustion engine (10) is supplied with fresh air by way of a compressor (18), has an adjustable valve control means (12) for the inlet valves (14) and/or the outlet valves (16), and is connected to an exhaust duct (20), wherein, in the exhaust duct (20), there is arranged a first three-way catalytic converter (24), and an injection valve (26) for introducing fuel into the exhaust duct (20) is arranged, as viewed in the flow direction of an exhaust gas of the internal combustion engine (10), downstream of an outlet (22) of the internal combustion engine (10) and upstream of the first three-way catalytic converter (24). The method comprises the following steps:—operating the internal combustion engine (10) in a scavenging mode,—introducing a superstoichiometric exhaust gas into the exhaust duct (20),—metering fuel into the exhaust duct (20) upstream of the first three-way catalytic converter (24) such that a stoichiometric exhaust gas is realized at the inlet of the first three-way catalytic converter (24), and—performing aftertreatment of the stoichiometric exhaust gas by way of the first three-way catalytic converter (24).

公开(公告)号：US20180179972A1

公开(公告)日：2018-06-28

申请号：US15852148

申请日：2017-12-22

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yuki NOSE ,  Keiichi MYOJO ,  Yoshiyuki SHOGENJI ,  Eiji IKUTA

IPC分类号： F02D41/02

CPC分类号： F02D41/025 ,  F01N3/101 ,  F01N9/00 ,  F01N2260/10 ,  F01N2430/06 ,  F01N2900/1602 ,  F02D41/008 ,  F02D41/1456 ,  F02D41/1475 ,  Y02T10/26

摘要： A control apparatus for an internal combustion engine includes an ECU configured to: determine whether a temperature-increasing process is being executed; calculate a target value of a parameter correlated with a difference between a rich air-fuel ratio and a lean air-fuel ratio achieved in the temperature-increasing process, based on an operating state of the internal combustion engine; calculate, as an upper limit, a value of the parameter required to increase the temperature of the catalyst to a predetermined upper limit temperature; determine whether the target value is equal to or lower than the upper limit; adjust the parameter used in the temperature-increasing process to the target value when the target value is determined to be equal to or lower than the upper limit; and adjust the parameter used in the temperature-increasing process to the upper limit when the target value is determined to be higher than the upper limit.

公开(公告)号：US20180171913A1

公开(公告)日：2018-06-21

申请号：US15382485

申请日：2016-12-16

申请人： Ford Global Technologies, LLC

发明人： Joseph Norman Ulrey ,  Donald Lewis

IPC分类号： F02D41/02 ,  F02M35/104 ,  F02M35/10 ,  F02B37/18 ,  F02B29/08 ,  F01N3/20 ,  F01N3/22 ,  F01N13/10 ,  F02D13/02 ,  F02D41/14 ,  F02D41/30 ,  F02D41/26

CPC分类号： F02D41/0235 ,  F01N3/10 ,  F01N3/20 ,  F01N3/22 ,  F01N13/10 ,  F01N13/107 ,  F01N2410/00 ,  F02B29/08 ,  F02B37/18 ,  F02D13/0234 ,  F02D13/0246 ,  F02D13/0249 ,  F02D13/0257 ,  F02D13/0261 ,  F02D13/06 ,  F02D41/0007 ,  F02D41/025 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1475 ,  F02D41/26 ,  F02D41/3005 ,  F02M35/10268 ,  F02M35/104 ,  Y02T10/144 ,  Y02T10/146 ,  Y02T10/18

摘要： Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a method may include supplying air to an exhaust system at a location downstream of an emissions control device via the first exhaust manifold, the air not having participated in combustion in the engine, the first exhaust manifold in fluidic communication with a first exhaust valve of a cylinder and an intake manifold, the cylinder including a second exhaust valve in fluidic communication with the second exhaust manifold. The method may further include adjusting an amount of fuel injected to the engine in response to output of a first oxygen sensor, the first oxygen sensor positioned in the exhaust system upstream of the emissions control device.

公开(公告)号：US20180171883A1

公开(公告)日：2018-06-21

申请号：US15382484

申请日：2016-12-16

申请人： Ford Global Technologies, LLC

发明人： Joseph Norman Ulrey ,  Brad Alan Boyer ,  Daniel Paul Madison ,  James Leiby

IPC分类号： F02D13/02 ,  F02D41/00 ,  F02D41/26 ,  F02M26/14 ,  F02M26/20 ,  F02M26/53 ,  F02B37/00 ,  F01N13/10

CPC分类号： F02D13/0249 ,  F01N13/107 ,  F02B25/145 ,  F02B37/00 ,  F02D13/0257 ,  F02D13/0261 ,  F02D41/0072 ,  F02D41/0077 ,  F02D41/0087 ,  F02D41/025 ,  F02D41/123 ,  F02D41/26 ,  F02M26/14 ,  F02M26/20 ,  F02M26/53

摘要： Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, a flow of exhaust (e.g., exhaust gas recirculation) from engine cylinders to the intake passage, upstream of a compressor, via an exhaust gas recirculation (EGR) passage and the first exhaust manifold may be adjusted by adjusting a timing of a first set of cylinder exhaust valves coupled to the first exhaust manifold. Additionally, the first set of cylinder exhaust valves open at a different time than a second set of cylinder exhaust valves coupled to the exhaust passage.

公开(公告)号：US20180149063A1

公开(公告)日：2018-05-31

申请号：US15821277

申请日：2017-11-22

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Yasuhiro OSHIUMI ,  Kensei HATA ,  Takahito ENDO ,  Yushi SEKI ,  Katsuya IWAZAKI ,  Yasuyuki KATO

IPC分类号： F01N9/00 ,  G05D1/00 ,  F01N3/023 ,  F01N3/20 ,  F02D41/02

CPC分类号： F01N9/002 ,  B60W2550/12 ,  B60W2550/20 ,  B60Y2200/92 ,  F01N3/023 ,  F01N3/0885 ,  F01N3/20 ,  F01N2900/10 ,  F01N2900/104 ,  F01N2900/12 ,  F01N2900/1606 ,  F01N2900/1612 ,  F02D41/025 ,  G05D1/0088 ,  Y10S903/903

摘要： A vehicle control system vehicle control system to remove deposition from the purification system without generating noises and vibrations is provided. The vehicle control system comprises a controller that operates the vehicle having an engine autonomously, and that removes deposition from a purification system. The controller is configured to: obtain an amount of deposition on the purification system; determine a presence of a passenger in the vehicle; and execute the removal control when an amount of the deposition on the purification system exceeds a threshold value. The threshold value includes a first threshold value used when the vehicle is propelled while carrying a passenger, and a second threshold value used when the vehicle is propelled autonomously without carrying a passenger that is smaller than the first threshold value.

公开(公告)号：US09689331B1

公开(公告)日：2017-06-27

申请号：US15079625

申请日：2016-03-24

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Jean-Yves Lavallee ,  Joshua Clifford Bedford ,  Giuseppe Mazzara Bologna ,  Charles E. Solbrig

IPC分类号： F01N3/00 ,  F02D41/02 ,  F01N3/20 ,  F02D35/00 ,  F02D41/14

CPC分类号： F02D41/0255 ,  F01N3/103 ,  F01N3/2066 ,  F01N2430/06 ,  F01N2560/06 ,  F02D41/0245 ,  F02D41/025 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/402 ,  F02D41/405 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/44

摘要： An internal combustion engine is coupled to an oxidation catalyst disposed upstream of a second catalytic device. A controller includes an instruction set executable to detect a cold start engine starting event, monitor first and second temperature sensors, control each of the fuel injectors to execute a first set of fuel injection events for each cylinder event in response to an output torque request, and execute a second set of fuel injection events for each cylinder event after cylinder top-dead-center. The second set of fuel injection events includes a final injection event, and a duration of the final injection event is determined based upon the first and second temperatures.