Patents by Inventor Claudius Bevot
Claudius Bevot has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230121579Abstract: An evaluation and control unit (100) for a broadband lambda probe (200) and a method for operating the same are disclosed.Type: ApplicationFiled: March 5, 2021Publication date: April 20, 2023Applicants: Robert Bosch GmbH, Melexis Technologies NVInventors: Claudius Bevot, Bernhard Ledermann, Stefan Kremer, Volodymyr Sotnikov
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Publication number: 20220276127Abstract: A method for operating a control unit for an exhaust gas sensor, in particular for a broadband lambda sensor for an internal combustion engine, in particular, of a motor vehicle, or for another sensor device. The control unit is designed to electrically activate the exhaust gas sensor. The control unit is, in particular, implemented in the form of an application-specific integrated circuit (ASIC). The method includes: specifying a measuring sequence and/or a starting point in time, in particular, for an operation of the control unit and/or of the exhaust gas sensor, with the aid of a computing device.Type: ApplicationFiled: July 23, 2020Publication date: September 1, 2022Inventors: Tobias-Gerhard Zobel, Bernhard Ledermann, Claudius Bevot, Florian Mezger
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Publication number: 20220200614Abstract: A method for precise acquisition of a signal of a sensor, by an evaluation and control unit which has a multiplexer at whose inputs there is at least one reference voltage whose voltage value is known, a ground potential of the reference voltage, a measurement signal of the exhaust gas sensor, and a ground potential of the measurement signal. A computer is connected downstream from the multiplexer via a transmission path and via an ADC that converts a voltage between its two inputs into a digital value. The method provides that a plurality of individual measurements are carried out in which switching states of the multiplexer are modified, and digital values are subsequently acquired at the output of the ADC. The computer calculates a measurement value, corrected with regard to offset and gain, from these digital values.Type: ApplicationFiled: April 7, 2020Publication date: June 23, 2022Inventors: Fabian Baumann, Bernhard Ledermann, Claudius Bevot, Florian Mezger
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Publication number: 20220187167Abstract: An evaluation and control unit for operating a wideband lambda sensor that has at least two electrical lines, the evaluation and control unit having at least two electrical terminals for electrical connection to the electrical lines of the wideband lambda sensor. Each of the electrical terminals has assigned to it a respective electrical switch via which each terminal is capable of being individually connected to at least one defined electrical potential. Each switch is voltage-resistant against the maximum short-circuit voltage that is to be expected at the respective terminal in case of fault. In addition, a method is described for the line-specific short-circuit diagnosis of the wideband lambda sensor (pinpointing).Type: ApplicationFiled: March 24, 2020Publication date: June 16, 2022Inventors: Bernhard Ledermann, Claudius Bevot, Danka Dittmer-Gobeljic, Oemer Kaya, Stefan Kremer
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Publication number: 20220178788Abstract: An evaluation and control unit, designed as an ASIC, for operating a broadband lambda sensor that includes at least one electrical line. The evaluation and control unit includes at least one electrical terminal for electrically connecting to the electrical line of the broadband lambda sensor, and a device for determining a setpoint value of a current flowing into the electrical terminal and for comparing this setpoint value with the current actually flowing into the electrical terminal and for comparing with the aid of comparators the electrical potential being applied to the electrical terminal with predefined limits.Type: ApplicationFiled: March 24, 2020Publication date: June 9, 2022Inventors: Bernhard Ledermann, Danka Dittmer-Gobeljic, Claudius Bevot, Fabian Baumann
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Patent number: 10509411Abstract: A method and a system for operating a vehicle. The vehicle has a predefined at least partially autonomous control mode and is designed to provide an identification indicating the predefined control mode to a vehicle-related component that has information relevant for the predefined control mode and/or one or more control command(s) relevant for the predefined control mode. To make the information and/or the control commands available to the vehicle, the providing takes place only when the vehicle is in the predefined control mode.Type: GrantFiled: August 1, 2017Date of Patent: December 17, 2019Assignee: Robert Bosch GmbHInventor: Claudius Bevot
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Patent number: 9983157Abstract: The invention relates to a circuit assembly for operating a probe (10) for determining the oxygen concentration in a gas mixture, in particular a Lambda probe for determining the oxygen concentration in the exhaust gas of internal combustion engines, comprising two electrodes (11, 15) which act as an outer and an inner pump electrode and form a pump cell, two electrodes which act as a Nernst electrode (15) and a reference electrode (19) and form a Nernst cell, and a pump current controller (210), which controls a pump current that is applied to the pump cell such that a predeterminable Nernst voltage (UN) that can be tapped at the Nernst cell is controlled to a predeterminable value, characterized in that the predeterminable value of the Nernst voltage can be varied.Type: GrantFiled: June 10, 2011Date of Patent: May 29, 2018Assignee: Robert Bosch GmbHInventors: Claudius Bevot, Helge Schichlein
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Publication number: 20180059675Abstract: A method and a system for operating a vehicle. The vehicle has a predefined at least partially autonomous control mode and is designed to provide an identification indicating the predefined control mode to a vehicle-related component that has information relevant for the predefined control mode and/or one or more control command(s) relevant for the predefined control mode. To make the information and/or the control commands available to the vehicle, the providing takes place only when the vehicle is in the predefined control mode.Type: ApplicationFiled: August 1, 2017Publication date: March 1, 2018Inventor: Claudius Bevot
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Patent number: 9880127Abstract: A method for checking fault detection of a control device of an internal combustion engine for malfunction of a connected broadband lambda probe, including checking with a fault simulator between the lambda probe and the control device; to simulate faults of the broadband lambda probe, the fault simulator modifies electrical signals between the broadband lambda probe and the control device. A Nernst voltage of the lambda probe and a pump current of the control device are delivered to the fault simulator; the fault simulator delivers a pump current to the lambda probe and a Nernst voltage to the control device; to simulate faults of the lambda probe, the fault simulator modifies the Nernst voltage to the control device as to the Nernst voltage outputted from the lambda probe. Also described is a related fault simulator. The method and fault simulator monitor the fault detection of control devices for lambda probes.Type: GrantFiled: July 9, 2013Date of Patent: January 30, 2018Assignee: ROBERT BOSCH GMBHInventors: Bernhard Ledermann, Claudius Bevot, Thomas Steinert
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Patent number: 9850844Abstract: A control and evaluation unit for the operation and evaluation of at least one sensor, in particular for the operation and evaluation of at least one lambda probe of an internal combustion engine, signal inputs being disposed for the reception of analog measured signals of the at least one sensor, received analog measured signals being digitized by way of an analog/digital converter, a signal transfer unit, by way of which digitized signals are transferred to a calculation unit, being disposed, and provision being made in particular that the signal inputs are switchable by way of a multiplexer.Type: GrantFiled: August 8, 2014Date of Patent: December 26, 2017Assignee: ROBERT BOSCH GMBHInventor: Claudius Bevot
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Patent number: 9618472Abstract: In a method for operating a heatable exhaust-gas sensor, which supplies at least one measuring signal and in which a sensor heater is operated using a pulse-width modulated operating voltage, the detection of the at least one measuring signal has priority over the supply of the pulse-width modulated operating voltage for sensor heater, and at least during a predefined time window in which the measuring signal is detected, the supply of the pulse-width modulated operating voltage for the sensor heater is suppressed using a blocking signal.Type: GrantFiled: February 14, 2013Date of Patent: April 11, 2017Assignee: ROBERT BOSCH GMBHInventors: Frank Engelke, Claudius Bevot, Thomas Schulz, Rolf Reischl, Ralf Kraemer, Andreas Gess
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Patent number: 9500152Abstract: A method for determining a polarization of a pump cell and/or a Nernst cell of a lambda probe for the diagnosis of the broadband lambda probe. A voltage or current pulse is applied to the pump/Nernst cell in a first method task, and, in a second method task, a voltage at the pump cell and/or the Nernst cell, or a variable that is related to the polarization or its time characteristic is determined and used as a measure of the polarization, and the function of the broadband lambda probe is monitored via the ascertained polarization. The determination of the polarization may be performed as a voltage measurement performed once or multiple times, or by determining the effect of the polarization in an associated controller, such as a pump current controller of an engine control unit. The variable associated with the polarization may be the reaction of the pump current control.Type: GrantFiled: November 15, 2012Date of Patent: November 22, 2016Assignee: ROBERT BOSCH GMBHInventors: Bernhard Ledermann, Claudius Bevot, Rolf Reischl
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Patent number: 9423792Abstract: In a method for suppressing interference in a controlled variable in a control circuit, in which the actuating variable is the useful signal, the controlled variable is detected continuously, at two successive sampling instants in each case, the values of the controlled variable are subtracted, and if the absolute amount of the difference deviates by a predefinable setpoint value, at least one control parameter is modified, in such a way that the response of the actuating variable to the interference is minimized.Type: GrantFiled: November 11, 2011Date of Patent: August 23, 2016Assignee: ROBERT BOSCH GMBHInventors: Claudius Bevot, Thomas Steinert, Thomas Schulz
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Publication number: 20160201588Abstract: A control and evaluation unit for the operation and evaluation of at least one sensor, in particular for the operation and evaluation of at least one lambda probe of an internal combustion engine, signal inputs being disposed for the reception of analog measured signals of the at least one sensor, received analog measured signals being digitized by way of an analog/digital converter, a signal transfer unit, by way of which digitized signals are transferred to a calculation unit, being disposed, and provision being made in particular that the signal inputs are switchable by way of a multiplexer.Type: ApplicationFiled: August 8, 2014Publication date: July 14, 2016Inventor: Claudius BEVOT
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Patent number: 9347903Abstract: Methods for detecting the type of lambda probes having at least two electrodes disposed on and/or in a solid electrolyte, of which at least one electrode is separated from a gas mixture by a diffusion barrier, and a pump current Ip being applied to at least one of the electrodes. Either the internal resistance of the lambda probe between the electrodes is determined and the type of probe is inferred on the basis of this resistance, or currents are impressed between the electrodes and the type of probe is inferred based on the voltages or resistance ratios thereby resulting.Type: GrantFiled: May 18, 2011Date of Patent: May 24, 2016Assignee: ROBERT BOSCH GMBHInventors: Claudius Bevot, Rolf Reischl, Thomas Classen, Benjamin Sillmann
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Publication number: 20150204814Abstract: A method for checking fault detection of a control device of an internal combustion engine for malfunction of a connected broadband lambda probe, including checking with a fault simulator between the lambda probe and the control device; to simulate faults of the broadband lambda probe, the fault simulator modifies electrical signals between the broadband lambda probe and the control device. A Nernst voltage of the lambda probe and a pump current of the control device are delivered to the fault simulator; the fault simulator delivers a pump current to the lambda probe and a Nernst voltage to the control device; to simulate faults of the lambda probe, the fault simulator modifies the Nernst voltage to the control device as to the Nernst voltage outputted from the lambda probe. Also described is a related fault simulator. The method and fault simulator monitor the fault detection of control devices for lambda probes.Type: ApplicationFiled: June 9, 2013Publication date: July 23, 2015Inventors: Bernhard Ledermann, Claudius Bevot, Thomas Steinert
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Publication number: 20150114848Abstract: In a method for operating a heatable exhaust-gas sensor, which supplies at least one measuring signal and in which a sensor heater is operated using a pulse-width modulated operating voltage, the detection of the at least one measuring signal has priority over the supply of the pulse-width modulated operating voltage for sensor heater, and at least during a predefined time window in which the measuring signal is detected, the supply of the pulse-width modulated operating voltage for the sensor heater is suppressed using a blocking signal.Type: ApplicationFiled: February 14, 2013Publication date: April 30, 2015Applicant: Robert Bosch GmbHInventors: Frank Engelke, Claudius Bevot, Thomas Schulz, Rolf Reischl, Rolf Kraemer, Andreas Gess
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Publication number: 20150047411Abstract: A method for determining a polarization of a pump cell and/or a Nernst cell of a lambda probe for the diagnosis of the broadband lambda probe. A voltage or current pulse is applied to the pump/Nernst cell in a first method task, and, in a second method task, a voltage at the pump cell and/or the Nernst cell, or a variable that is related to the polarization or its time characteristic is determined and used as a measure of the polarization, and the function of the broadband lambda probe is monitored via the ascertained polarization. The determination of the polarization may be performed as a voltage measurement performed once or multiple times, or by determining the effect of the polarization in an associated controller, such as a pump current controller of an engine control unit. The variable associated with the polarization may be the reaction of the pump current control.Type: ApplicationFiled: November 15, 2012Publication date: February 19, 2015Inventors: Bernhard Ledermann, Claudius Bevot, Rolf Reischl
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Publication number: 20130186169Abstract: Methods for detecting the type of lambda probes having at least two electrodes disposed on and/or in a solid electrolyte, of which at least one electrode is separated from a gas mixture by a diffusion barrier, and a pump current Ip being applied to at least one of the electrodes. Either the internal resistance of the lambda probe between the electrodes is determined and the type of probe is inferred on the basis of this resistance, or currents are impressed between the electrodes and the type of probe is inferred based on the voltages or resistance ratios thereby resulting.Type: ApplicationFiled: May 18, 2011Publication date: July 25, 2013Inventors: Claudius Bevot, Rolf Reischl, Thomas Classen, Benjamin Sillmann
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Publication number: 20130081448Abstract: The invention relates to a circuit assembly for operating a probe (10) for determining the oxygen concentration in a gas mixture, in particular a Lambda probe for determining the oxygen concentration in the exhaust gas of internal combustion engines, comprising two electrodes (11, 15) which act as an outer and an inner pump electrode and form a pump cell, two electrodes which act as a Nernst electrode (15) and a reference electrode (19) and form a Nernst cell, and a pump current controller (210), which controls a pump current that is applied to the pump cell such that a predeterminable Nernst voltage (UN) that can be tapped at the Nernst cell is controlled to a predeterminable value, characterized in that the predeterminable value of the Nernst voltage can be varied.Type: ApplicationFiled: June 10, 2011Publication date: April 4, 2013Applicant: ROBERT BOSCH GMBHInventors: Claudius Bevot, Helge Schichlein