Patents by Inventor Timm Hollmann
Timm Hollmann 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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Patent number: 11913364Abstract: A method for monitoring emissions in the exhaust gas of an internal combustion engine in a vehicle, comprising carrying out (520) multiple successive emission measurements for at least one component in the exhaust gas, wherein each of the emission measurements is respectively performed after a driving distance of predefined length is covered by the vehicle; storing (540) a distance-related emission value (Ei), which was obtained (530) on the basis of the measurement, in a memory element (42, 200, 400) for each of the emission measurements; and forming (550) a smoothed emission level for a current point in time on the basis of multiple of the previously stored distance-related emission values, wherein more recent emission values are taken into consideration more strongly than emission values lying farther back in time in the formation of the smoothed emission level.Type: GrantFiled: July 20, 2022Date of Patent: February 27, 2024Assignee: Robert Bosch GmbHInventors: Jurij Woelfling, Roberto Verrino, Timm Hollmann
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Publication number: 20230279800Abstract: The invention relates to a method for determining an effective prevailing uncertainty value (304, 305) for an emission value (301, 302) for a given time point when operating a drivetrain (100) of a motor vehicle with an internal-combustion engine (110), wherein, at different times (n), one prevailing emission value (301) and one prevailing uncertainty value (303) are determined for the emission value, wherein the effective prevailing uncertainty value (304, 305) for the given time point is determined from prevailing uncertainty values (303) and prevailing emission values (301) prior to the given time point.Type: ApplicationFiled: February 16, 2023Publication date: September 7, 2023Inventors: Jurij Woelfling, Roberto Verrino, Timm Hollmann, Ralf Knitz
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Publication number: 20230024848Abstract: A method for monitoring emissions in the exhaust gas of an internal combustion engine in a vehicle, comprising carrying out (520) multiple successive emission measurements for at least one component in the exhaust gas, wherein each of the emission measurements is respectively performed after a driving distance of predefined length is covered by the vehicle; storing (540) a distance-related emission value (Ei), which was obtained (530) on the basis of the measurement, in a memory element (42, 200, 400) for each of the emission measurements; and forming (550) a smoothed emission level for a current point in time on the basis of multiple of the previously stored distance-related emission values, wherein more recent emission values are taken into consideration more strongly than emission values lying farther back in time in the formation of the smoothed emission level.Type: ApplicationFiled: July 20, 2022Publication date: January 26, 2023Inventors: Jurij Woelfling, Roberto Verrino, Timm Hollmann
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Publication number: 20230022334Abstract: The invention concerns a method (200) for operating a motor vehicle (100) with a combustion engine (110), including the determination (210) of a current operating state of the vehicle (100), the determination (220) of an emission state of the vehicle (100) during the determined operating state, carrying out (230) at least one measure to reduce emissions depending on the emission state and evaluating (240) the at least one measure in connection with the operating state with regard to its success in reducing emissions. Furthermore, a computing unit (130) and a computer program product for carrying out such a method (200) are proposed.Type: ApplicationFiled: June 17, 2022Publication date: January 26, 2023Inventors: Frank Ottusch, Jan Kappa, Jurij Woelfling, Kosuke Tamanoi, Roberto Verrino, Timm Hollmann
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Patent number: 10837408Abstract: For an optimized metering of fuel and water for the operation of an internal combustion engine in which a direct injection and an intake manifold injection are provided for metering fuel into the internal combustion engine, and in which the internal combustion engine is assigned a system for water injection, a same intake manifold injector is used for both water and fuel injection.Type: GrantFiled: November 28, 2016Date of Patent: November 17, 2020Assignee: Robert Bosch GmbHInventors: Rainer Ecker, Thomas Kuhn, Timm Hollmann, Udo Schulz
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Patent number: 10598116Abstract: A method for ascertaining a correction value for fuel metering of a fuel injector of an internal combustion engine, in which fuel is injected from a high-pressure accumulator into a combustion chamber with the aid of the fuel injector, the fuel being injected into the combustion chamber in multiple separate injection procedures during one work cycle, a value representative of a static flow rate through the fuel injector being ascertained by ascertaining, for at least one of the multiple separate injection procedures, a ratio of a pressure change caused in the high-pressure accumulator by the at least one of the multiple separate injection procedures and an associated duration characteristic for the at least one of the multiple separate injection procedures being ascertained, and the correction value being ascertained based on a comparison of the representative value to a comparison value.Type: GrantFiled: June 1, 2017Date of Patent: March 24, 2020Assignee: Robert Bosch GmbHInventors: Achim Hirchenhein, Alexander Schenck Zu Schweinsberg, Klaus Joos, Eugenia Schwarz, Timm Hollmann
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Patent number: 10519892Abstract: In a method for operating an internal combustion engine with intake manifold injection and direct injection, a value of at least one parameter that is correlated with an exhaust gas of a combustion chamber of the internal combustion engine and that is influenced by purging of uncombusted fuel through the combustion chamber into the exhaust gas is ascertained, and, if it is concluded, based on the ascertained value of the at least one parameter, that uncombusted fuel is purged, at least one operating parameter for filling the combustion chamber is adjusted.Type: GrantFiled: November 28, 2016Date of Patent: December 31, 2019Assignee: Robert Bosch GmbHInventors: Claus Wundling, Rainer Ecker, Thomas Kuhn, Timm Hollmann, Udo Schulz
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Publication number: 20190331050Abstract: A method for ascertaining a correction value for fuel metering of a fuel injector of an internal combustion engine, in which fuel is injected from a high-pressure accumulator into a combustion chamber with the aid of the fuel injector, the fuel being injected into the combustion chamber in multiple separate injection procedures during one work cycle, a value representative of a static flow rate through the fuel injector being ascertained by ascertaining, for at least one of the multiple separate injection procedures, a ratio of a pressure change caused in the high-pressure accumulator by the at least one of the multiple separate injection procedures and an associated duration characteristic for the at least one of the multiple separate injection procedures being ascertained, and the correction value being ascertained based on a comparison of the representative value to a comparison value.Type: ApplicationFiled: June 1, 2017Publication date: October 31, 2019Applicant: Robert Bosch GmbHInventors: Achim HIRCHENHEIN, Alexander SCHENCK ZU SCHWEINSBERG, Klaus JOOS, Eugenia SCHWARZ, Timm HOLLMANN
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Publication number: 20180363585Abstract: In a method for operating an internal combustion engine with intake manifold injection and direct injection, a value of at least one parameter that is correlated with an exhaust gas of a combustion chamber of the internal combustion engine and that is influenced by purging of uncombusted fuel through the combustion chamber into the exhaust gas is ascertained, and, if it is concluded, based on the ascertained value of the at least one parameter, that uncombusted fuel is purged, at least one operating parameter for filling the combustion chamber is adjusted.Type: ApplicationFiled: November 28, 2016Publication date: December 20, 2018Inventors: Claus Wundling, Rainer Ecker, Thomas Kuhn, Timm Hollmann, Udo Schulz
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Publication number: 20180274489Abstract: For an optimized metering of fuel and water for the operation of an internal combustion engine in which a direct injection and an intake manifold injection are provided for metering fuel into the internal combustion engine, and in which the internal combustion engine is assigned a system for water injection, a same intake manifold injector is used for both water and fuel injection.Type: ApplicationFiled: November 28, 2016Publication date: September 27, 2018Inventors: Rainer Ecker, Thomas Kuhn, Timm Hollmann, Udo Schulz
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Publication number: 20180245535Abstract: A method for ascertaining a cause of an fault in an injection system of an internal combustion engine having manifold and direct injections as injection types includes, if a fault exists in at least one first combustion process in an injection system associated with a combustion chamber of the internal combustion engine, replacing a first of the two injection types used in the at least one first combustion process with a second of the two injection types in at least one second combustion process, and, identifying the first injection type as the cause responsive to the fault no longer being detected in the second combustion process.Type: ApplicationFiled: August 2, 2016Publication date: August 30, 2018Inventors: Claus Wundling, Rainer Ecker, Thomas Kuhn, Timm Hollmann, Udo Schulz
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Publication number: 20180238259Abstract: A method for detecting a fault during operation of an internal combustion engine having manifold injection and direct injection; the internal combustion engine being controlled in two different combustion cycles, in each instance, for introducing a fuel quantity and a corresponding air quantity into a combustion chamber of the internal combustion engine, with different distributions of the fuel quantity to the manifold injection and the direct injection in the two combustion cycles; for each of the two combustion cycles, a value of a ratio of the air quantity introduced into the combustion chamber to the fuel quantity introduced into the combustion chamber being ascertained; and if at least one of the two values differs from a corresponding comparison value by more than a first threshold value, a type of fault during operation of the internal combustion engine being deduced in light of the difference.Type: ApplicationFiled: July 27, 2016Publication date: August 23, 2018Inventors: Claus Wundling, Rainer Ecker, Thomas Kuhn, Timm Hollmann, Udo Schulz
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Publication number: 20140373813Abstract: The invention relates to a system (1) for venting a fuel tank (3). The system (1) has a gas vessel (9), a first line (11), and a second line (13). The gas vessel (9) is designed to receive fuel vapor (7) from the fuel tank (3). The first line (11) connects the gas vessel (9) to an air supply path (21) of an internal combustion engine (19). The second line (13) connects the gas vessel (9) to a fuel supply path (30) of the internal combustion engine (19).Type: ApplicationFiled: August 30, 2012Publication date: December 25, 2014Applicant: ROBERT BOSCH GMBHInventors: Georg Mallebrein, Martin Klenk, Werner Haeming, Marko Lorenz, Hartmut Krueger, Timm Hollmann, Dennis Glemser, Stefan Gollnisch, Peter Schroepfer, Martina Homeyer, Franz Raichle, Wolfgang Fischer, Andreas Pape, Andreas Gutscher, Juergen Schwarz, Thomas Keller, Andreas Posselt, Georg Kurz
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Patent number: 8793059Abstract: In a method for controlling a fuel injection system (10) of an internal combustion engine, wherein the fuel injection system (10) comprises a manifold (24) and a high-pressure pump (20) and a fuel dosing unit (16) is associated with the high-pressure pump (20), wherein the fuel dosing unit (16) controls the amount of fuel delivered, an amount of fuel required for the operation of the internal combustion engine is determined as a function of a correction factor, which is based on a fuel pressure at the inlet of the high-pressure pump (20) and/or on a vapor pressure of the fuel to be delivered.Type: GrantFiled: September 11, 2008Date of Patent: July 29, 2014Assignee: Robert Bosch GmbHInventors: Oliver Albrecht, Frank Mueller, Bernd Schroeder, Jens Wolber, Markus Amler, Timm Hollmann, Christian Wiedmann
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Patent number: 8402952Abstract: A method for controlling a fuel injection system (10) of an internal combustion engine. Including a high-pressure pump (16) associated with a quantity controlling valve (15) having a solenoid valve (22) electromagnetically actuatable by a coil (21) for supplying fuel, the quantity control valve (15) controlling the quantity of fuel supplied by the high-pressure pump (16) and the coil (21) of the solenoid valve (22) having a first current value applied thereto, in order to close the same for supplying fuel to the high-pressure pump (16), the first current value being reduced to a second current value when the solenoid valve is closing (22), such that the radiation of audible sound arising from the closing of the solenoid valve (22) is at least partially reduced.Type: GrantFiled: July 17, 2008Date of Patent: March 26, 2013Assignee: Robert Bosch GmbHInventors: Gerhard Haaf, Timm Hollmann, Christian Wiedmann, Joerg Kuempel
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Patent number: 7836865Abstract: A method for starting an internal combustion engine that is operated with a fuel mixture made of at least two types of fuel. An injection of the fuel into combustion chambers of the internal combustion engine occurs starting at a predefined pressure threshold of the fuel in a fuel supply according to a high-pressure starting mode, and also according to a low-pressure starting mode if the predefined pressure threshold is no longer met. The pressure threshold is selected as a function of the mixture ratio of the fuel types in the fuel mixture. In this way it can be achieved that differences can be taken into consideration in the optimal mixture formation of the fuel types.Type: GrantFiled: May 7, 2008Date of Patent: November 23, 2010Assignee: Robert Bosch GmbHInventors: Klaus Joos, Jens Wolber, Ruediger Weiss, Timm Hollmann, Manfred Dietrich, Peter Schenk, Erkan Danisman
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Publication number: 20100282214Abstract: In a method for controlling a fuel injection system (10) of an internal combustion engine, wherein the fuel injection system (10) comprises a manifold (24) and a high-pressure pump (20) and a fuel dosing unit (16) is associated with the high-pressure pump (20), wherein the fuel dosing unit (16) controls the amount of fuel delivered, an amount of fuel required for the operation of the internal combustion engine is determined as a function of a correction factor, which is based on a fuel pressure at the inlet of the high-pressure pump (20) and/or on a vapor pressure of the fuel to be delivered.Type: ApplicationFiled: September 11, 2008Publication date: November 11, 2010Applicant: Robert Bosch GMBHInventors: Oliver Albrecht, Frank Mueller, Bernd Schroeder, Jens Wolber, Markus Amler, Timm Hollmann, Christian Wiedmann
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Publication number: 20100237266Abstract: A method for controlling a fuel injection system (10) of an internal combustion engine. Including a high-pressure pump (16) associated with a quantity controlling valve (15) having a solenoid valve (22) electromagnetically actuatable by a coil (21) for supplying fuel, the quantity control valve (15) controlling the quantity of fuel supplied by the high-pressure pump (16) and the coil (21) of the solenoid valve (22) having a first current value applied thereto, in order to close the same for supplying fuel to the high-pressure pump (16), the first current value being reduced to a second current value when the solenoid valve is closing (22), such that the radiation of audible sound arising from the closing of the solenoid valve (22) is at least partially reduced.Type: ApplicationFiled: July 17, 2008Publication date: September 23, 2010Applicant: Robert Bosch GMBHInventors: Gerhard Haaf, Timm Hollmann, Christian Wiedmann, Joerg Kuempel
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Patent number: 7738233Abstract: A method for operating an inductive load, which is operated in a motor vehicle with electric voltages of different magnitudes, is provided, a current rise in the inductive load being influenced by selecting pulse lengths and pulse pauses of the electric voltage.Type: GrantFiled: November 24, 2004Date of Patent: June 15, 2010Assignee: Robert Bosch GmbHInventors: Thomas Frenz, Juergen Eckhardt, Hans-Friedrich Schwarz, Bernd Schroeder, Timm Hollmann, Joerg Kuempel
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Publication number: 20100126474Abstract: The invention relates to a high pressure fuel pump for a fuel injection system of an internal combustion engine, having a pump housing in which is formed a working space, into which fuel can be supplied from a low pressure region of the radial piston pump, the working space being delimited by a pump piston which can be driven, in order to pressurize the fuel, by an external drive, in particular by a camshaft of an internal combustion engine, wherein in order to meter the fuel quantity supplied to the working space, a throttle device having a variable throttle action is arranged on or in the pump housing.Type: ApplicationFiled: May 29, 2006Publication date: May 27, 2010Inventors: Heinz Siegel, Hans-Peter Harnisch, Matthias Schumacher, Oliver Albrecht, Uwe Mueller, Bernd Schroeder, Timm Hollmann, Christian Wiedmann, Stefan Smetana