公开(公告)号：US11920507B2

公开(公告)日：2024-03-05

申请号：US17150795

申请日：2021-01-15

Applicant: Deere & Company

Inventor： Danan Dou ,  Shyan-Cherng Huang ,  Taner Tuken ,  Thomas M. Harris

IPC: F01N3/20 ,  B01D53/94 ,  B01J23/40 ,  B01J35/04 ,  F01N3/035 ,  F01N3/10 ,  F01N9/00 ,  F01N11/00 ,  F01N13/00

CPC classification number: F01N3/208 ,  B01D53/9409 ,  B01D53/9477 ,  B01D53/9495 ,  B01J23/40 ,  B01J35/04 ,  F01N3/035 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2066 ,  F01N9/00 ,  F01N9/002 ,  F01N11/002 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  B01D2251/2067 ,  B01D2255/102 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/20723 ,  B01D2255/2092 ,  B01D2255/50 ,  B01D2255/70 ,  B01D2255/904 ,  B01D2255/915 ,  B01D2258/012 ,  F01N2250/02 ,  F01N2550/05 ,  F01N2560/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/05 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2560/08 ,  F01N2590/08 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0416 ,  F01N2900/1404 ,  F01N2900/1812 ,  Y02T10/12 ,  Y02T10/40

Abstract: An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway that receives exhaust gas from the engine, a temperature sensor configured to generate a temperature signal associated with a temperature of the exhaust gas at a position along the exhaust gas pathway, and a reductant source. The system also includes first and second injectors in fluid communication with the reductant source. The first and second injectors are configured to inject reductant into the exhaust gas pathway at first and second rates. The system also includes a first treatment element positioned downstream of the first injector and within the exhaust gas pathway, and a controller in communication with the temperature sensor. The controller is configured to receive the temperature signal from the temperature sensor and adjust at least one of the first rate or the second rate based at least in part on the temperature signal.

公开(公告)号：US11821347B2

公开(公告)日：2023-11-21

申请号：US18007890

申请日：2021-04-16

Applicant: Vitesco Technologies GmbH

Inventor： Steven Maertens

IPC: F01N11/00 ,  F01N13/00

CPC classification number: F01N11/00 ,  F01N13/008 ,  F01N13/009 ,  F01N2550/04 ,  F01N2550/24 ,  F01N2560/08 ,  F01N2900/0418 ,  F01N2900/1406 ,  F01N2900/1411

Abstract: A device for diagnosing a particulate filter suitable for: determining a measured pressure time profile, and a theoretical pressure time profile upstream of the filter, implementing, on each profile: low-pass filtering to obtain a first filtered time profile, second low-pass filtering of the first filtered time profile to obtain a second filtered time profile, calculating a difference between the second filtered time profile and the first filtered time profile, obtaining an absolute value of the calculated difference, and calculating an integral of the absolute value, and, from a comparison between the two integrals, a diagnosis of the particulate filter.

公开(公告)号：US20190211725A1

公开(公告)日：2019-07-11

申请号：US16227792

申请日：2018-12-20

Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT

Inventor： Stefan PAUKNER ,  Falk-Christian BARON VON CEUMERN-LINDENSTJERNA

IPC: F01N3/20 ,  F01N3/10 ,  B01D53/94 ,  B01D46/00 ,  F01N3/023 ,  F01N3/035 ,  F01N13/00 ,  F01N3/28

CPC classification number: F01N3/101 ,  F01N3/021 ,  F01N3/025 ,  F01N3/035 ,  F01N3/2033 ,  F01N3/22 ,  F01N13/009 ,  F01N13/0093 ,  F01N2240/14 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2900/1404 ,  F01N2900/1602

Abstract: The invention relates to an exhaust gas aftertreatment system for an internal combustion engine, in particular for a gasoline engine that is spark-ignited by means of spark plugs. A first three-way catalytic converter is situated in an exhaust gas system that is connected to an outlet of the internal combustion engine in a position close to the engine. Downstream from the first three-way catalytic converter, a four-way catalytic converter or a combination of a particle filter and a second three-way catalytic converter downstream from the particle filter is situated in the underbody position of the motor vehicle. An exhaust gas burner with which hot exhaust gas is introducible into the exhaust gas system downstream from the first three-way catalytic converter and upstream from the four-way catalytic converter or the particle filter is provided at an exhaust duct of the exhaust gas system. The exhaust gas burner is supplied with fresh air by a secondary air pump. The invention further relates to a method for exhaust aftertreatment of an internal combustion engine having such an exhaust gas aftertreatment system.

公开(公告)号：US20190120112A1

公开(公告)日：2019-04-25

申请号：US16157376

申请日：2018-10-11

Applicant: AISAN KOGYO KABUSHIKI KAISHA

Inventor： Yuzuru ITO

IPC: F01N11/00 ,  F02M26/15 ,  F02M26/22 ,  F01N13/00 ,  F01N13/16

CPC classification number: F01N11/00 ,  F01N13/008 ,  F01N13/16 ,  F01N2560/025 ,  F01N2560/08 ,  F02M26/15 ,  F02M26/22

Abstract: An exhaust leak detecting apparatus includes an exhaust pressure sensor to detect the exhaust pressure in a portion of an exhaust passage that allows exhaust gas discharged from an engine to flow therethrough, the portion being located at a position upstream of a catalyst for purifying exhaust gas, and an exhaust leak determining part to determine that exhaust gas is leaking or may leak from the exhaust passage upstream of the catalyst and generate a warning when the exhaust pressure detected by the exhaust pressure sensor falls outside a predetermined range.

公开(公告)号：US20190010853A1

公开(公告)日：2019-01-10

申请号：US16020539

申请日：2018-06-27

Applicant: Robert Bosch GmbH

Inventor： Martin Stephani ,  Martin Brandt ,  Yunjie Lian

IPC: F01N11/00 ,  F01N3/021

CPC classification number: F01N11/002 ,  F01N3/021 ,  F01N2550/04 ,  F01N2550/24 ,  F01N2560/08 ,  F01N2900/0418 ,  F01N2900/08 ,  F01N2900/1406

Abstract: In a method and a device for diagnosing a differential pressure sensor of a particle filter of an internal combustion engine, where the differential pressure sensor is connected via a first pressure line to an exhaust-gas system upstream from the particle filter and via a second pressure line to the exhaust-gas system downstream from the particle filter and upstream from a rear muffler, a diagnosis of the first or second pressure lines is performed by evaluating a comparison of a differential pressure signal from a differential pressure sensor with modeled pressure values.

公开(公告)号：US20180347434A1

公开(公告)日：2018-12-06

申请号：US15995231

申请日：2018-06-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alexander Michel ,  Rafat F. Hattar ,  Jochen Grieser ,  Daniel Siebert ,  Maximilian Melling ,  Simon Schiesser ,  Markus Kraft

IPC: F01N11/00 ,  F01N9/00

CPC classification number: F01N11/00 ,  F01N9/002 ,  F01N9/005 ,  F01N2560/025 ,  F01N2560/08 ,  F01N2560/14 ,  F01N2900/0402 ,  F01N2900/102 ,  F01N2900/1402 ,  F01N2900/1406 ,  F01N2900/1606 ,  F01N2900/1611

Abstract: A method and system controls a regeneration of a particle filter of an internal combustion engine. A first value is measured for the oxygen content in exhaust gas upstream from the particle filter. A second value is measured for the oxygen content in exhaust gas downstream from the particle filter. The particle filter is determined to be free of soot when the second value for the oxygen content is equal to the first value for the oxygen content.

公开(公告)号：US20180340455A1

公开(公告)日：2018-11-29

申请号：US15779027

申请日：2016-11-22

Applicant: Yanmar Co., Ltd.

Inventor： Hiromitsu HIDAKA

IPC: F01N3/035 ,  F01N3/10 ,  F01N3/28 ,  F01N13/00

CPC classification number: F01N3/035 ,  B60K13/04 ,  B60Y2200/14 ,  B60Y2400/302 ,  B60Y2400/306 ,  F01N3/101 ,  F01N3/2882 ,  F01N11/002 ,  F01N13/009 ,  F01N13/1805 ,  F01N2250/02 ,  F01N2340/02 ,  F01N2450/30 ,  F01N2550/04 ,  F01N2560/06 ,  F01N2560/08 ,  F01N2900/1404 ,  F01N2900/1406 ,  Y02T10/22 ,  Y02T10/47

Abstract: An engine device including a post-treatment device 20, provided in an exhaust passage of an engine 1, for purifying an exhaust gas from the engine 1. As the post-treatment device 20, a three-way catalyst 22 is used. The engine device further includes a filter case 31 including a filter body 32 for catching deposits in the exhaust gas. The filter case 31 is disposed, in a replaceable manner, upstream of the post-treatment device 20 in the exhaust passage.

公开(公告)号：US20180252140A1

公开(公告)日：2018-09-06

申请号：US15908683

申请日：2018-02-28

Applicant: Volkswagen Aktiengesellschaft

Inventor： Michael Mandausch

IPC: F01N11/00 ,  F01N3/021 ,  F02B37/18 ,  F02M35/10 ,  F02B37/24 ,  F01N5/00

CPC classification number: F01N11/00 ,  F01N3/021 ,  F01N5/00 ,  F01N9/002 ,  F01N2260/04 ,  F01N2550/02 ,  F01N2550/04 ,  F01N2560/07 ,  F01N2560/08 ,  F01N2900/08 ,  F01N2900/1406 ,  F01N2900/1606 ,  F02B37/183 ,  F02B37/24 ,  F02B2037/122 ,  F02D41/0007 ,  F02D2200/0812 ,  F02M35/10386 ,  Y02T10/144 ,  Y02T10/20 ,  Y02T10/47

Abstract: A method for determining the state of loading of a particle filter in an exhaust system of a turbocharged internal combustion engine is provided. To determine the state of loading, a position of a control mechanism of the turbine of the exhaust turbocharger is detected and compared with the position during operation of the internal combustion engine with the same operating parameters with the particle filter unladen. An air mass meter is provided in order to be able to distinguish a change in the pressure situation at the turbine of the exhaust turbocharger due to a rise in the exhaust gas backpressure owing to increasing loading of the particle filter from a change in the pressure situation owing to leakage of the air supply system. An internal combustion engine having a control unit which is configured to carry out such a method is also provided.

公开(公告)号：US10060845B2

公开(公告)日：2018-08-28

申请号：US15462260

申请日：2017-03-17

Applicant: Cummins Inc.

Inventor： Aleksey Yezerets ,  Z. Gerald Liu ,  Krishna Kamasamudram ,  Neal W. Currier

IPC: B01D53/56 ,  G01N15/08 ,  B01D53/94 ,  B01D46/42 ,  B01D46/00 ,  B01J35/04 ,  B01J23/22 ,  G01L19/08 ,  F01N3/20 ,  F01N3/021 ,  F01N11/00

CPC classification number: G01N15/0826 ,  B01D46/0086 ,  B01D46/42 ,  B01D53/9418 ,  B01D53/9436 ,  B01D53/944 ,  B01D53/9445 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/20723 ,  B01D2255/2092 ,  B01D2255/904 ,  B01D2258/012 ,  B01J23/22 ,  B01J35/04 ,  F01N3/021 ,  F01N3/035 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N3/36 ,  F01N11/002 ,  F01N13/009 ,  F01N2250/02 ,  F01N2370/02 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2900/1616 ,  G01L19/08 ,  G01N2015/084 ,  Y02T10/24 ,  Y02T10/47

Abstract: System and methods for reducing secondary emissions in an exhaust stream from an internal combustion engine are disclosed. The systems and methods include a filtration device positioned downstream from an SCR catalyst of an aftertreatment system disposed in the exhaust system. The filtration device can also be used for particulate filter diagnostics and for treatment of ammonia slip.

公开(公告)号：US20180230880A1

公开(公告)日：2018-08-16

申请号：US15751564

申请日：2016-09-21

Applicant: ROBERT BOSCH GMBH

Inventor： Andrew EVANS ,  Oliver WINTERSTELLER ,  Andres MURUBE LINDAHL ,  Palanimuthu THALAMUTHU

IPC: F01N3/20 ,  F01N9/00 ,  F01N11/00

CPC classification number: F01N3/2066 ,  F01N3/208 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/05 ,  F01N2560/08 ,  F01N2610/02 ,  F01N2610/14 ,  F01N2610/144 ,  F01N2610/1446 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2610/1473 ,  F01N2900/1808 ,  F01N2900/1821 ,  F01N2900/1822 ,  Y02T10/24 ,  Y02T10/47

Abstract: A diesel exhaust fluid (DEF) delivery system and method for operating same. The method includes controlling a pump to operate at an idle speed to pressurize a pressure line. The method includes controlling a backflow dosing module (BFDM) valve to open to allow an amount of the DEF to flow into a fluid storage tank through a backflow line. The method includes determining a dosing request, a first dosing actuation request for the first dosing valve and a second dosing actuation request for the second dosing valve based on the dosing request. The method includes, when a sum of the first and second dosing actuation requests is less than 100%, controlling the BFDM valve to close when either of the first and second dosing valves is open; and controlling the BFDM valve to open when the first dosing valve is closed and the second dosing valve is closed.