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公开(公告)号：US11668217B2
公开(公告)日：2023-06-06
申请号：US17825445
申请日：2022-05-26
Inventor： Falk-Christian Baron Von Ceumern-Lindenstjerna , Stefan Paukner , Michael Kaack , Sebastian Hemminger
CPC classification number: F01N3/2033 , F01N3/025 , F01N3/101 , F01N13/0093 , F01N2240/14 , F01N2560/025 , F01N2900/1624
Abstract: A device for exhaust gas aftertreatment in an internal combustion engine can be connected to an outlet of the internal combustion engine. The device comprises an exhaust gas system with an exhaust gas channel in which a three-way catalytic converter is arranged, and an exhaust gas burner with which hot burner exhaust gases can be fed into the exhaust gas channel at a feed point upstream from the three-way catalytic converter. The three-way catalytic converter is configured as a lambda probe catalytic converter and comprises a first catalyst volume and a second catalyst volume, whereby a lambda probe is arranged downstream from the first catalyst volume and upstream from the second catalyst volume, whereby the first catalyst volume has a lower oxygen storage capacity than the second catalyst volume. A method for exhaust gas aftertreatment in an internal combustion engine has such an exhaust gas aftertreatment device.
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公开(公告)号：US10934912B2
公开(公告)日：2021-03-02
申请号：US16525205
申请日：2019-07-29
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Falk-Christian Baron Von Ceumern-Lindenstjerna , Stefan Paukner , Michael Alexander Manz , Michael Kaack , Jens Gockel
Abstract: The invention relates to a method for the exhaust aftertreatment of an internal combustion engine, which on the outlet side is connected to an exhaust gas system. Provided in the exhaust gas system is at least one exhaust aftertreatment component with which, upon reaching the light-off temperature of this exhaust aftertreatment component, the gaseous limited exhaust gas components may be converted into unlimited exhaust gas components. An introduction point is provided at an exhaust duct of the exhaust gas system, at which a hot gas, in particular an exhaust gas of an exhaust gas burner, is introduced into the exhaust duct. The hot gas mixes with the exhaust gas of the internal combustion engine in such a way that a hot mixed gas results in which the unburned exhaust gas components are oxidized to unlimited exhaust gas components, without a catalytically active surface. It is provided that the introduction of the hot gas is set as soon as the exhaust gas components of the exhaust aftertreatment system have reached their respective light-off temperature.
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公开(公告)号：US10781801B2
公开(公告)日：2020-09-22
申请号：US16572028
申请日：2019-09-16
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Asmus Carstensen , Artur Semke , Thomas Schulenburg , Andreas Herr , Marcus Dallmann , Bernd Hupfeld , Holger Lange , Andre Horn , Michael Kaack , Thomas Maischik , Uwe Kammann
Abstract: An axial piston motor having a cylinder housing, in which a plurality of cylinders are formed, and having pistons which are movably guided in the cylinders, wherein the pistons are attached to a swash plate and wherein a flow of a fluid that has entered via an inlet into the axial piston motor is controlled into and out of the cylinders by means of inlet and outlet valves, wherein the inlet and/or outlet valves comprise fluid change openings which are formed in a cylinder head plate and which can be temporarily released and covered by means of a rotary slide, for which purpose the rotary slide forms at least one passage opening.
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公开(公告)号：US10941689B2
公开(公告)日：2021-03-09
申请号：US16534091
申请日：2019-08-07
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Stefan Paukner , Falk-Christian Baron Von Ceumern-Lindenstjerna , Michael Manz , Michael Kaack
Abstract: A method for the exhaust gas aftertreatment of a combustion engine having an exhaust system in which at least three catalytic converters and at least three lambda probes are disposed. Downstream of a first catalytic converter, an actively heatable catalytic converter is provided, which is actively heated at a start of the combustion engine. The lambda control of the combustion engine is carried out in each case by that lambda probe disposed downstream of the respective last catalytic converter to reach the light-off temperature thereof. Also, an exhaust gas aftertreatment system for implementing such a method.
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Patent Agency Ranking
公开(公告)号：US11698009B2
公开(公告)日：2023-07-11
申请号：US16937968
申请日：2020-07-24
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
CPC classification number: F01N3/035 , F01N3/0253 , F01N3/101 , F01N3/2033 , F01N3/36 , F01N2250/02 , F01N2340/02 , F01N2390/02 , F01N2610/03
Abstract: An exhaust gas aftertreatment system for an internal combustion engine has an exhaust system that can be connected to an outlet of the internal combustion engine. A three-way catalytic converter that is situated close to the engine and, downstream from the three-way catalytic converter that is situated close to the engine, a second catalytic converter and a particle reduction device are arranged in the direction in which an exhaust gas of the internal combustion engine flows through an exhaust gas channel of the exhaust system. A fuel injector is arranged on the exhaust gas channel so as to inject fuel downstream from the three-way catalytic converter that is situated close to the engine and upstream from the second catalytic converter, and the exhaust system comprises a secondary air system with which secondary air can be blown into the exhaust gas channel downstream from the three-way catalytic converter that is situated close to the engine and upstream from the second catalytic converter.
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公开(公告)号：US11261771B2
公开(公告)日：2022-03-01
申请号：US16987824
申请日：2020-08-07
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Abstract: A method for heating a catalytic converter in an exhaust system of an internal combustion engine, in which an exhaust gas burner for heating the catalytic converter is arranged, upstream of the catalytic converter. A lambda probe for controlling the combustion air ratio of the exhaust gas burner is arranged immediately downstream of the exhaust gas burner and upstream of the catalytic converter. The method includes operating the internal combustion engine with a stoichiometric combustion air ratio (λE=1), activating the exhaust gas burner, which is operated alternately with a substoichiometric combustion air ratio (λB 1), wherein from the substoichiometric combustion air ratio (λB 1) as soon as a rich breakthrough is detected by the second lambda probe (34), and wherein a switchover from the superstoichiometric combustion air ratio (λB>1) to the substoichiometric combustion air ratio (λB
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公开(公告)号：US11492949B2
公开(公告)日：2022-11-08
申请号：US17428895
申请日：2020-02-06
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Tolga Bozalp , Stefan Paukner , Falk-Christian Baron Von Ceumern-Lindenstjerna , Michael Kaack
Abstract: An exhaust gas aftertreatment system for an internal combustion engine, which comprises an exhaust system which can be connected to the outlet of an internal combustion engine. A catalytic converter close to the engine and a second catalytic converter arranged downstream of the catalytic converter in an underbody of a motor vehicle are provided in the flow direction of an exhaust gas from the internal combustion engine flowing through an exhaust gas duct of the exhaust system. An inlet point for secondary air, an exhaust gas burner, and a fuel injector for introducing fuel into the exhaust gas duct are arranged downstream of the catalytic converter close to the engine and upstream of the second catalytic converter. According to the invention, the exhaust gas burner is activated immediately after the internal combustion engine is started in order to heat the second catalytic converter to its light-off temperature. Once the second catalytic converter has reached its light-off temperature, secondary air and fuel are additionally introduced into the exhaust gas duct and are exothermically reacted on the second catalytic converter in order to support the heating of the second catalytic converter.
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公开(公告)号：US11181024B2
公开(公告)日：2021-11-23
申请号：US16663605
申请日：2019-10-25
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Falk-Christian Baron Von Ceumern-Lindenstjerna , Stefan Paukner , André Horn , Michael Kaack , Thomas Maischik , Asmus Carstensen
Abstract: The invention relates to method for operating an internal combustion engine that has at least two combustion chambers, of which at least one is operated at a substoichiometric air-fuel ratio and of which at least another is operated at a superstoichiometric air-fuel ratio. The outlet of the internal combustion engine is connected to an exhaust gas system in which a three-way catalytic converter is arranged in the flow direction of an exhaust gas through an exhaust gas channel, and an exhaust gas heat-recovery device is arranged downstream from the three-way catalytic converter. It is provided for the unburned fuel components of the combustion chamber that is operated at a substoichiometric air-fuel ratio to be exothermally reacted with the residual oxygen from the combustion chamber that is operated at a superstoichiometric air-fuel ratio on the three-way catalytic converter, whereby the exhaust gas temperature is raised so that the exhaust gas heat-recovery device can recover a portion of the exhaust gas enthalpy downstream from the three-way catalytic converter.
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9.发明申请公开(公告)号：US20200040784A1
公开(公告)日：2020-02-06
申请号：US16525205
申请日：2019-07-29
Applicant: VOLKSWAGEN AKTIENGESELLSCHAFT
Inventor： Falk-Christian Baron Von Ceumern-Lindenstjerna , Stefan Paukner , Michael Alexander Manz , Michael Kaack , Jens Gockel
Abstract: The invention relates to a method for the exhaust aftertreatment of an internal combustion engine, which on the outlet side is connected to an exhaust gas system. Provided in the exhaust gas system is at least one exhaust aftertreatment component with which, upon reaching the light-off temperature of this exhaust aftertreatment component, the gaseous limited exhaust gas components may be converted into unlimited exhaust gas components. An introduction point is provided at an exhaust duct of the exhaust gas system, at which a hot gas, in particular an exhaust gas of an exhaust gas burner, is introduced into the exhaust duct. The hot gas mixes with the exhaust gas of the internal combustion engine in such a way that a hot mixed gas results in which the unburned exhaust gas components are oxidized to unlimited exhaust gas components, without a catalytically active surface. It is provided that the introduction of the hot gas is set as soon as the exhaust gas components of the exhaust aftertreatment system have reached their respective light-off temperature.
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