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公开(公告)号：US20220251989A1
公开(公告)日：2022-08-11
申请号：US17661129
申请日：2022-04-28
发明人： Erwin Achleitner , Tino Arlt , Florian Kleiner , Gerhard Haft
摘要： A method for operating an exhaust-gas purification system which is arranged in the exhaust system of an internal combustion engine, and an exhaust-gas purification system, are described. In the method, a combination of electrical catalytic converter heating measures with internal combustion engine catalytic converter heating measures is implemented, whereby particularly fast and inexpensive heating of a catalytic converter is achieved. The corresponding exhaust system preferably has, in an exhaust-gas flow direction, firstly a support catalytic converter and then a heated catalytic converter.
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公开(公告)号：US20240011423A1
公开(公告)日：2024-01-11
申请号：US18254518
申请日：2021-11-11
CPC分类号： F01N3/2026 , F01N11/002 , F01N3/323 , B01D53/9495 , F01N2550/22 , B01D2259/4566
摘要： Various embodiments of the teachings herein include a method for heating a catalytic converter arranged in an exhaust-gas tract of an internal combustion engine and comprising an electric heating device. An example method may include: activating the electric heating device with a specified heating power at a time before the internal combustion engine is started; monitoring the catalyst temperature in a region of the catalytic converter adjacent the heating device; before the catalyst temperature has reached a predetermined first threshold value, supplying a secondary air mass flow with a first flow rate is supplied into the exhaust-gas tract upstream of the catalytic converter; and after the catalyst temperature has reached the predetermined first threshold value, increasing the secondary air mass flow to a second flow rate greater than the first flow rate.
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公开(公告)号：US11814997B2
公开(公告)日：2023-11-14
申请号：US17661129
申请日：2022-04-28
发明人： Erwin Achleitner , Tino Arlt , Florian Kleiner , Gerhard Haft
CPC分类号： F01N3/2013 , F01N3/101 , F01N3/2093 , F01N2240/16 , F01N2430/10
摘要： A method for operating an exhaust-gas purification system which is arranged in the exhaust system of an internal combustion engine, and an exhaust-gas purification system, are described. In the method, a combination of electrical catalytic converter heating measures with internal combustion engine catalytic converter heating measures is implemented, whereby particularly fast and inexpensive heating of a catalytic converter is achieved. The corresponding exhaust system preferably has, in an exhaust-gas flow direction, firstly a support catalytic converter and then a heated catalytic converter.
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公开(公告)号：US20200309069A1
公开(公告)日：2020-10-01
申请号：US16903546
申请日：2020-06-17
发明人： Gerhard Eser , Florian Kleiner , Erwin Achleitner , Gerhard Haft
IPC分类号： F02M25/08 , B60K15/03 , F01N3/24 , F01N3/22 , F01N3/029 , F01N3/10 , F02D41/22 , B01D53/94 , B01D53/04
摘要： The disclosed embodiments relate to a device for operating a tank ventilation system of an internal combustion engine. This device has a fuel tank, an activated carbon filter for collecting and buffering fuel vapors escaping from the fuel tank, a purge air pump and a control unit. The outlet of the purge air pump is connected to the intake tract of the internal combustion engine via a first tank venting valve and connected to the exhaust tract of the internal combustion engine via a second tank venting valve.
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公开(公告)号：US11905871B2
公开(公告)日：2024-02-20
申请号：US18254518
申请日：2021-11-11
CPC分类号： F01N3/2026 , B01D53/9495 , F01N3/323 , F01N11/002 , B01D2259/4566 , F01N2550/22
摘要： Various embodiments of the teachings herein include a method for heating a catalytic converter arranged in an exhaust-gas tract of an internal combustion engine and comprising an electric heating device. An example method may include: activating the electric heating device with a specified heating power at a time before the internal combustion engine is started; monitoring the catalyst temperature in a region of the catalytic converter adjacent the heating device; before the catalyst temperature has reached a predetermined first threshold value, supplying a secondary air mass flow with a first flow rate is supplied into the exhaust-gas tract upstream of the catalytic converter; and after the catalyst temperature has reached the predetermined first threshold value, increasing the secondary air mass flow to a second flow rate greater than the first flow rate.
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公开(公告)号：US20220105503A1
公开(公告)日：2022-04-07
申请号：US17552936
申请日：2021-12-16
发明人： Holger Stock , Philipp Langenfeld , Peter Hirth , Erwin Achleitner , Gerhard Haft , Florian Kleiner , Paul Rodatz
摘要： A device for the aftertreatment of exhaust gases from an exhaust-gas source, having a spatially delimited flow path through which flow may pass proceeding from the exhaust-gas source, having a heating catalytic converter which is arranged in the flow path and which, as viewed in a flow direction, firstly has a catalytically active catalytic converter through which flow may pass and, following this in the flow direction, has an electrically heatable heating disk, wherein at least one outlet of a secondary air supply is arranged in the region of the heating catalytic converter such that a gas flow referred to as secondary air is fed into the flow path in the region of the heating catalytic converter.
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公开(公告)号：US11986811B2
公开(公告)日：2024-05-21
申请号：US17552936
申请日：2021-12-16
发明人： Holger Stock , Philipp Langenfeld , Peter Hirth , Erwin Achleitner , Gerhard Haft , Florian Kleiner , Paul Rodatz
CPC分类号： B01J35/00 , B01D53/9481 , B01J19/0013 , B01D2255/9155 , B01J2219/00132 , F01N3/2013 , F01N3/2803 , F01N3/30
摘要： A device for the aftertreatment of exhaust gases from an exhaust-gas source, having a spatially delimited flow path through which flow may pass proceeding from the exhaust-gas source, having a heating catalytic converter which is arranged in the flow path and which, as viewed in a flow direction, firstly has a catalytically active catalytic converter through which flow may pass and, following this in the flow direction, has an electrically heatable heating disk, wherein at least one outlet of a secondary air supply is arranged in the region of the heating catalytic converter such that a gas flow referred to as secondary air is fed into the flow path in the region of the heating catalytic converter.
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公开(公告)号：US11725602B2
公开(公告)日：2023-08-15
申请号：US17616914
申请日：2020-06-03
发明人： Paul Rodatz , Gerhard Haft , Erwin Achleitner , Florian Kleiner
IPC分类号： F02D41/14
CPC分类号： F02D41/1454 , F02D41/1445 , F02D41/1453 , F02D41/1459 , F02D41/1463 , F02D2041/1468
摘要： Various embodiments of the teachings herein include a method for determining the nitrogen oxide content and/or ammonia content in the exhaust gas of an internal combustion engine with a catalytic converter arranged in an exhaust tract and an exhaust gas sensor downstream of the catalytic converter. In some embodiments, the method comprises: determining an operating state of the internal combustion engine, the operating state indicating either lean operation or rich operation of the internal combustion engine; generating a signal using the exhaust gas sensor; and determining the nitrogen oxide content and/or ammonia content in the exhaust gas at least partially based on the determined operating state of the internal combustion engine and the signal.
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公开(公告)号：US20220316416A1
公开(公告)日：2022-10-06
申请号：US17616914
申请日：2020-06-03
发明人： Paul Rodatz , Gerhard Haft , Erwin Achleitner , Florian Kleiner
IPC分类号： F02D41/14
摘要： Various embodiments of the teachings herein include a method for determining the nitrogen oxide content and/or ammonia content in the exhaust gas of an internal combustion engine with a catalytic converter arranged in an exhaust tract and an exhaust gas sensor downstream of the catalytic converter. In some embodiments, the method comprises: determining an operating state of the internal combustion engine, the operating state indicating either lean operation or rich operation of the internal combustion engine; generating a signal using the exhaust gas sensor; and determining the nitrogen oxide content and/or ammonia content in the exhaust gas at least partially based on the determined operating state of the internal combustion engine and the signal.
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公开(公告)号：US10941731B2
公开(公告)日：2021-03-09
申请号：US16903546
申请日：2020-06-17
发明人： Gerhard Eser , Florian Kleiner , Erwin Achleitner , Gerhard Haft
IPC分类号： F02M25/08 , B01D53/04 , B01D53/94 , B60K15/03 , F01N3/029 , F01N3/10 , F01N3/22 , F01N3/24 , F02D41/22
摘要： The disclosed embodiments relate to a device for operating a tank ventilation system of an internal combustion engine. This device has a fuel tank, an activated carbon filter for collecting and buffering fuel vapors escaping from the fuel tank, a purge air pump and a control unit. The outlet of the purge air pump is connected to the intake tract of the internal combustion engine via a first tank venting valve and connected to the exhaust tract of the internal combustion engine via a second tank venting valve.
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