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公开(公告)号：US20240011425A1
公开(公告)日：2024-01-11
申请号：US18343949
申请日：2023-06-29
Applicant: Robert Bosch GmbH
Inventor： Michael Fey
IPC: F01N11/00
CPC classification number: F01N11/007 , F01N2560/02 , F01N2900/1624
Abstract: A method for ascertaining fill levels of first and second exhaust gas catalytic converters in an exhaust gas system downstream from an internal combustion engine with respect to at least one exhaust gas component. The method includes detecting, using a sensor upstream from the first exhaust gas catalytic converter, at least one operating parameter of the exhaust gas system, ascertaining the fill level of the first exhaust gas catalytic converter based on the detected at least one operating parameter using a first calculation rule, ascertaining a total fill level of the first exhaust gas catalytic converter and second exhaust gas catalytic converter based on the ascertained at least one operating parameter using a second calculation rule, and ascertaining the fill level of the second exhaust gas catalytic converter as a difference between the total fill level and the fill level of the first exhaust gas catalytic converter.
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公开(公告)号：US11459930B2
公开(公告)日：2022-10-04
申请号：US17492845
申请日：2021-10-04
Applicant: Robert Bosch GmbH
Inventor： Michael Fey
Abstract: Operating a combustion engine with an exhaust gas aftertreatment system. In one example, a method includes determining a level of at least one exhaust gas component using a theoretical catalytic converter model in which at least one signal of a first exhaust gas sensor is input as a first signal, detecting a signal of a second exhaust gas sensor downstream of the exhaust gas catalytic converter as a second signal, determining a deviation of the second signal from a target signal, reinitializing the catalytic converter model if the deviation of the second signal from the target signal exceeds a predetermined threshold value, regulating the level by setting an air-fuel mixture supplied to the combustion engine according to a target level based on the determined level, determining a deviation between the first and the second signals, and correcting the first signal.
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公开(公告)号：US11085348B2
公开(公告)日：2021-08-10
申请号：US16722502
申请日：2019-12-20
Applicant: Robert Bosch GmbH
Inventor： Michael Fey
Abstract: A method for controlling a filling of an exhaust-gas component storage-device of a catalytic-converter in the exhaust-gas of an internal-combustion-engine, in which an actual fill level (θmod) of the exhaust-gas component storage-device is ascertained using a first-system model to which signals (λin,meas) of a first-exhaust-gas probe that extends into the exhaust-gas flow upstream from the catalytic-converter and that acquires a concentration of the exhaust-gas component are supplied, if this first exhaust-gas probe is ready for operation. A lambda-target-value (λin,set) for a first control-loop is specified by a lambda-target-value pilot control, and that, if the first exhaust-gas probe is not ready for operation, a replacement signal for the signal of the first exhaust-gas probe is supplied to the system-model, and the replacement signal is used in the lambda-target-value pilot control as an initial-value for the lambda-target-value. Also described is a control device for the method.
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公开(公告)号：US20210164380A1
公开(公告)日：2021-06-03
申请号：US17106821
申请日：2020-11-30
Applicant: Robert Bosch GmbH
Inventor： Bernd Kraewer , Michael Fey
Abstract: A method for diagnosing a plurality of lambda sensors which are arranged upstream of an exhaust gas catalytic converter in a plurality of exhaust gas banks of a multi-flow exhaust gas system of an internal combustion engine. An opposite lambda offset of the lambda sensors is identified (54) when a difference (ΔT) between a measured exhaust gas temperature (Tmeasure) and a modeled exhaust gas temperature (Tmod) downstream of the exhaust gas catalytic converter overshoots a threshold value (S).
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公开(公告)号：US10995644B2
公开(公告)日：2021-05-04
申请号：US16722787
申请日：2019-12-20
Applicant: Robert Bosch GmbH
Inventor： Michael Fey
Abstract: A method for controlling a fill level of an exhaust gas component store of a catalytic converter of an internal combustion engine, in which the fill level is controlled by using a system model, which includes a catalytic converter model, and uncertainties of measurement or model variables, which influence the control of the fill level, being corrected by an adaptation that is based on signals of an exhaust-gas probe situated on the output side of the catalytic converter. The method provides that an adaptation requirement is learned as a function of the operating point, the learned adaptation requirement is stored as a function of the operating point, and a distinction is made based on the operating point dependency between different causes of the uncertainties. Also described is a control unit to carry out the method.
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Patent Agency Ranking
6.发明申请公开(公告)号：US20200347793A1
公开(公告)日：2020-11-05
申请号：US16962660
申请日：2018-12-27
Applicant: Robert Bosch GmbH
Inventor： Alexandre Wagner , Michael Fey
Abstract: A method and device including an interface, a memory, and a processor for the control of a fill level of a catalytic converter for an internal combustion engine of a motor vehicle. A setpoint variable is ascertained as a function of an expected operating variable for the fill level, and the expected operating variable is determined as a function of information from at least one further sensor, which acquires information about an operating state of the motor vehicle.
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7.发明申请公开(公告)号：US20200347792A1
公开(公告)日：2020-11-05
申请号：US16723146
申请日：2019-12-20
Applicant: Robert Bosch GmbH
Inventor： Michael Fey
Abstract: A method and a control device for regulating a modeled fill level of an exhaust gas component reservoir of a catalytic converter of an internal combustion engine. Regulation of the modeled fill level is accomplished using a system model. An actual maximum storage capacity of the catalytic converter for the exhaust gas component is ascertained during operation of the internal combustion engine and is taken into consideration in regulating the modeled fill level.
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公开(公告)号：US20190353069A1
公开(公告)日：2019-11-21
申请号：US16402351
申请日：2019-05-03
Applicant: Robert Bosch GmbH
Inventor： Alexandre Wagner , Michael Fey
IPC: F01N3/20
Abstract: A method for operating an engine system including an internal combustion engine and an exhaust gas aftertreatment device, including: carrying out a fill level control to control a fill level of the exhaust gas aftertreatment device as a function of a predefined fill level setpoint value; operating a pilot control for the fill level control; and adapting the pilot control as a function of a deviation between a measured lambda value and a modeled lambda value.
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9.发明申请公开(公告)号：US20190309698A1
公开(公告)日：2019-10-10
申请号：US16461032
申请日：2017-10-26
Applicant: Robert Bosch GmbH
Inventor： Matthias Eckart , Alexandre Wagner , Jens Oehlerking , Joerg Frauhammer , Martin Knopp , Michael Fey
Abstract: The invention relates to a method for controlling a filling level of an exhaust gas component accumulator of a catalytic converter (26) in the exhaust gas of an internal combustion engine (10), in which an actual filling level (θmod) of the exhaust gas component accumulator is determined with a first catalytic converter model (100). The method is characterized in that a lambda setpoint (λin,set) is formed, wherein a predetermined target fill level (θset,flt) is converted into a base lambda setpoint by means of a second system model (104) which is the reverse of the first catalytic converter model (100), a deviation of the actual fill level (θmod) from the predetermined target fill level (θset,flt) is determined and processed to a lambda setpoint correction value by means of a fill level control unit (124), a sum of the base lambda setpoint value and the lambda setpoint value correction value is formed, and said sum is used to form a correction value, with which fuel metering to at least one combustion chamber (20) of the internal combustion engine (10) is influenced.
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公开(公告)号：US20230024946A1
公开(公告)日：2023-01-26
申请号：US17844177
申请日：2022-06-20
Applicant: Robert Bosch GmbH
Inventor： Michael Fey
Abstract: The invention relates to a method (200) for operating an internal combustion engine (110) having at least one catalytic converter (122), wherein control interventions of a lambda control for controlling an exhaust gas composition of the internal combustion engine are deactivated, comprising ascertaining a current exhaust gas composition upstream of the at least one catalytic converter (122), determining a current oxygen fill level of the at least one catalytic converter (122) on the basis of the ascertained current exhaust gas composition, ascertaining (210) a planned control intervention on a composition of an air-fuel mixture supplied to the internal combustion engine (110) on the basis of the determined current oxygen fill level of the at least one catalytic converter, ascertaining a current exhaust gas composition (123) downstream of the at least one catalytic converter (122), ascertaining a future exhaust gas composition (123) downstream of the at least one catalytic converter (122) resulting on the basis of an air-fuel mixture already supplied to the internal combustion engine (110), and reactivating the lambda control and specifying (260) a control intervention to be carried out as a function of the planned control intervention and the current exhaust gas composition (123) downstream of the at least one catalytic converter (122), and/or as a function of the planned control intervention and the future exhaust gas composition. Furthermore, a processing unit (130) and a computer program for carrying out such a method (200) are proposed.
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