Patents by Inventor Rainer Strohmaier
Rainer Strohmaier 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: 7922884Abstract: A device for measuring the pressure of a gas mixture composed of gas components has an amperometric sensor that works on the limiting current principle, having two electrodes connected to a direct voltage that are situated on a solid electrolyte, of which one electrode is covered by a diffusion barrier, and a measuring element for measuring the limiting current flowing via electrodes as a measure for the gas pressure. For the purpose of error-free measurement of the gas pressure in a gas mixture in which the concentration of the gas components fluctuates with time, means are provided which fix the mole fraction of a gas component, drawn upon for pressure measurement, that is present upstream of the diffusion barrier at a constant 100%, at least during the pressure measuring phase.Type: GrantFiled: November 8, 2004Date of Patent: April 12, 2011Assignee: Robert Bosch GmbHInventors: Rainer Strohmaier, Martin Bauer, Bernhard Kamp
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Publication number: 20090222231Abstract: A method and a device for correcting a signal of a sensor provide for maximally accurate drift compensation of a characteristics curve of the sensor. At least one characteristic quantity of the signal of the sensor is compared with a reference value. The signal of the sensor is corrected as a function of the comparison result. A value of the at least one characteristic quantity of the signal of the sensor derived from the signal of the sensor is formed as the reference value.Type: ApplicationFiled: May 15, 2006Publication date: September 3, 2009Inventors: Joachim Berger, Roland Klatt, Reinhold Danner, Heinrich Barth, Anndreas Pfaeffle, Rainer Strohmaier, Thomas Bleile, Michael Scheidt, Matthias Illing, Wolfgang Dressler, Torsten Handler, Christof Rau, Thomas Pauer, Gottfried Flik, Udo Schulz, Wolfgang Fischer, Matthias Schueler, Jan Bahlo, Jean-Pierre Hathout
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Patent number: 7568376Abstract: The invention concerns a procedure to determine a mass of particles or a particle mass flow in an exhaust gas system of an internal combustion engine, whereby at least one resistive particle sensor is disposed in the exhaust gas system of the internal combustion engine. The measured signal change of the particle sensor is compared with a predicted signal change of the particle sensor ascertained from an engine model. If the measured signal change of the particle sensor and/or the predicted signal change of the particle sensor are corrected while taking into account the influencing variables on the transverse sensitivities of the particle sensor, it is possible when ascertaining the predicted signal change of the particle sensor that a compensation for the transverse sensibilities can result even during dynamic operating point changes of the internal combustion engine, which occur faster than the actuation of the particle sensor.Type: GrantFiled: April 24, 2007Date of Patent: August 4, 2009Assignee: Robert Bosch GmbHInventors: Rainer Strohmaier, Torsten Handler, Bernhard Kamp, Katharina Schaenzlin, Henrik Schittenhelm, Andreas Sturm
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Patent number: 7543477Abstract: A sensor for detecting particles in a gas flow, in particular soot particles in an exhaust gas flow, includes at least two measuring electrodes, which are positioned on a substrate made of an insulating material. To protect the measuring electrodes, they are covered by a protective layer.Type: GrantFiled: April 1, 2004Date of Patent: June 9, 2009Assignee: Robert Bosch GmbHInventors: Joachim Berger, Rainer Strohmaier, Detlef Heimann, Norbert Breuer, Ralf Wirth, Karl-Franz Reinhart, Ralf Schmidt, Walter Bauer, Kai-Achim Baldenhofer, Bernard Kamp, Thomas Grau
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Patent number: 7377154Abstract: In a method for monitoring an exhaust gas limiting value of an internal combustion engine using an engine controller, the engine controller has at least one exhaust gas sensor, and an error signal is output when the exhaust gas limiting value is exceeded. If the emissions predicted for the present driving state are ascertained with the aid of an engine model and compared to the signal of the exhaust gas sensor or a comparison value for the emission derived therefrom, the prescribed driving cycle may be taken into account when certifying a limiting value monitoring system and a defective system may be reliably recognized in practical operation even in atypical driving states without resulting in erroneous triggering of error signals.Type: GrantFiled: July 20, 2006Date of Patent: May 27, 2008Assignee: Robert Bosch GmbHInventors: Joachim Berger, Rainer Strohmaier, Bernard Kamp
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Patent number: 7318341Abstract: A method and a device for monitoring a signal, in particular a pressure signal that characterizes the pressure differential at the input and output of an exhaust after-treatment system, are described. Errors are recognized on the basis of the occurrence of oscillations in the sensor signal.Type: GrantFiled: February 26, 2002Date of Patent: January 15, 2008Assignee: Robert Bosch GmbHInventors: Rainer Strohmaier, Holger Plote, Andreas Krautter, Stefan Zimmermann, Michael Walter, Juergen Sojka
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Publication number: 20080000286Abstract: The invention concerns a procedure to determine a mass of particles or a particle mass flow in an exhaust gas system of an internal combustion engine, whereby at least one resistive particle sensor is disposed in the exhaust gas system of the internal combustion engine. The measured signal change of the particle sensor is compared with a predicted signal change of the particle sensor ascertained-from an engine model. If the measured signal change of the particle sensor and/or the predicted signal change of the particle sensor are corrected while taking into account the influencing variables on the transverse sensitivities of the particle sensor, it is possible when ascertaining the predicted signal change of the particle sensor that a compensation for the transverse sensibilities can result even during dynamic operating point changes of the internal combustion engine, which occur faster than the actuation of the particle sensor.Type: ApplicationFiled: April 24, 2007Publication date: January 3, 2008Applicant: Robert Bosch GmbHInventors: Rainer Strohmaier, Torsten Handler, Bernhard Kamp, Katharina Schaenzlin, Henrik Schittenhelm, Andreas Sturm
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Publication number: 20070144904Abstract: A device for measuring the pressure of a gas mixture composed of gas components has an amperometric sensor that works on the limiting current principle, having two electrodes connected to a direct voltage that are situated on a solid electrolyte, of which one electrode is covered by a diffusion barrier, and a measuring element for measuring the limiting current flowing via electrodes as a measure for the gas pressure. For the purpose of error-free measurement of the gas pressure in a gas mixture in which the concentration of the gas components fluctuates with time, means are provided which fix the mole fraction of a gas component, drawn upon for pressure measurement, that is present upstream of the diffusion barrier at a constant 100%, at least during the pressure measuring phase.Type: ApplicationFiled: November 8, 2004Publication date: June 28, 2007Inventors: Rainer Strohmaier, Martin Bauer, Bernhard Kamp
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Publication number: 20070033925Abstract: In a method for monitoring an exhaust gas limiting value of an internal combustion engine using an engine controller, the engine controller has at least one exhaust gas sensor, and an error signal is output when the exhaust gas limiting value is exceeded. If the emissions predicted for the present driving state are ascertained with the aid of an engine model and compared to the signal of the exhaust gas sensor or a comparison value for the emission derived therefrom, the prescribed driving cycle may be taken into account when certifying a limiting value monitoring system and a defective system may be reliably recognized in practical operation even in atypical driving states without resulting in erroneous triggering of error signals.Type: ApplicationFiled: July 20, 2006Publication date: February 15, 2007Inventors: Joachim Berger, Rainer Strohmaier, Bernard Kamp
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Patent number: 7059117Abstract: A device and a method for controlling an exhaust-gas aftertreatment system, for example, for an internal combustion engine, are provided. The exhaust-gas aftertreatment system includes at least one catalytic converter. A reducing agent is supplied to the exhaust-gas aftertreatment system. An exhaust gas mass flow is preselectable on the basis of the power consumption by a sensor and/or on the basis of a pressure variable.Type: GrantFiled: December 22, 2001Date of Patent: June 13, 2006Assignee: Robert Bosh GmbHInventors: Wolfgang Ripper, Bernd Mahr, Rainer Strohmaier
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Publication number: 20050145492Abstract: A sensor for determining the concentration of a gas component in a gas mixture is provided, including at least one pump cell having an outer pump electrode which is exposed to the gas mixture and an inner pump electrode located in a measuring chamber, and further including a Nernst cell having a Nernst electrode located in the measuring chamber and a reference electrode located in a reference gas channel. The pump cell and the Nernst are formed in a composite structure of stacked solid electrolyte layers, which structure has an upper layer containing the pump electrodes, a middle layer containing the measuring chamber and the reference gas channel, as well as a lower layer containing a heating element and two supply leads. To suppress noise in the output signal of the sensor, the leads of the Nernst cell are disposed in one plane, in parallel side-by-side relationship, and symmetrically to at least one of the two supply leads of the heating element.Type: ApplicationFiled: October 4, 2002Publication date: July 7, 2005Inventors: Rainer Strohmaier, Carsten Springhorn, Ruediger Deibert, Lothar Diehl
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Patent number: 6769246Abstract: A method and a device are provided for controlling an exhaust gas aftertreatment system, for example, an exhaust gas aftertreatment system of an internal combustion engine. A first quantity characterizing the amount of substances supplied to the exhaust gas aftertreatment system, based on first characteristic operating quantities, is determined in a first operating state. A second quantity characterizing the amount of substances removed from the exhaust gas aftertreatment system, based on second characteristic operating quantities, is determined in a second operating state. The first quantity and the second quantity are then compared for error detection.Type: GrantFiled: October 11, 2002Date of Patent: August 3, 2004Assignee: Robert Bosch GmbHInventors: Rainer Strohmaier, Stefan Zimmermann, Martin Bauer
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Publication number: 20040118108Abstract: A device and a method for controlling an exhaust-gas aftertreatment system, in particular for an internal combustion engine, are described. The exhaust-gas aftertreatment system includes at least one catalytic converter. A reducing agent is supplied to the exhaust-gas aftertreatment system. An exhaust gas mass flow is preselectable on the basis of the power consumption by a sensor and/or on the basis of a pressure variable.Type: ApplicationFiled: January 20, 2004Publication date: June 24, 2004Inventors: Wolfgang Ripper, Bernd Mahr, Rainer Strohmaier
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Publication number: 20040040285Abstract: A method and a device for monitoring a signal, in particular a pressure signal that characterizes the pressure differential at the input and output of an exhaust after-treatment system, are described. Errors are recognized on the basis of the occurrence of oscillations in the sensor signal.Type: ApplicationFiled: June 19, 2003Publication date: March 4, 2004Inventors: Rainer Strohmaier, Holger Plote, Andreas Krautter, Stefan Zimmermann, Michael Walter, Juergen Sojka
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Method and device for analyzing a signal from an ion current sensor in an internal combustion engine
Patent number: 6666069Abstract: A method and a device for analyzing a signal from an ion current sensor of an internal combustion engine. At least one torque quantity characterizing the torque produced by the internal combustion engine is determined on the basis of a signal from the ion current sensor.Type: GrantFiled: February 23, 2001Date of Patent: December 23, 2003Assignee: Robert Bosch GmbHInventors: Franz Raichle, Joachim Berger, Rainer Strohmaier, Wolfgang Fischer -
Patent number: 6645361Abstract: An electrochemical gas sensor for determining the concentration of gas components in a gas mixture, in particular for determining NOx and HC. The gas sensor includes a first measuring gas space which is connected to the measuring gas, and a second measuring gas space which is connected to the first measuring gas space by a connecting channel. Furthermore, a first electrode and a second electrode, arranged in the first measuring gas space, and at least one third electrode arranged in the second measuring gas space, and at least one fourth electrode are provided. The two measuring gas spaces are arranged in layer planes on top of one another and are separated from one another by at least one oxygen ion conducting layer, the connecting channel passing through the oxygen ion conducting layer.Type: GrantFiled: January 14, 2002Date of Patent: November 11, 2003Assignee: Robert Bosch GmbHInventors: Bernhard Bloemer, Rainer Strohmaier, Carsten Springhorn, Detlef Heimann, Hans-Joerg Renz, Harald Neumann, Margret Schuele, Bernd Schumann, Thomas Moser, Sabine Thiemann-Handler
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Patent number: 6625975Abstract: A device and a method for detecting ammonia, especially for detecting an NH3 slip emission in a catalytic converter arrangement, a gas, especially an exhaust gas of a lean-mixture-driven internal combustion engine, being supplied to an SCR catalytic converter via a first gas supply device, and ammonia being supplied via a second gas supply device. The device includes a first arrangement, especially an oxidation catalytic converter, which prior to the supplying of the gas to the SCR catalytic converter, initially at least substantially oxidizes the oxidizable gas components contained in the gas. Emerging gas from the SCR catalytic converter is analyzed by a second arrangement, especially a gas sensor, with respect to the oxidizable components contained in it. The gas sensor may detect oxidizable gas components, including in a non-selective manner, and is connected via a processing unit and a control unit to a dosing system, which regulates the supply of ammonia.Type: GrantFiled: February 28, 2001Date of Patent: September 30, 2003Assignee: Robert Bosch GmbHInventors: Roland Stahl, Rainer Strohmaier
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Patent number: 6614230Abstract: A method and a device are described for evaluating a signal from an ionic current sensor of an internal combustion engine. Based on a signal from the ion current sensor, at least one quantity characterizing the combustion in the internal combustion engine is determined. At least one quantity characterizing a combustion start and/or a combustion quality is determined by conditioning the signal.Type: GrantFiled: February 26, 2001Date of Patent: September 2, 2003Assignee: Robert Bosch GmbHInventors: Franz Raichle, Joachim Berger, Rainer Strohmaier, Wolfgang Fischer
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Publication number: 20030126858Abstract: A method and a device are described for controlling an exhaust gas aftertreatment system, in particular for an internal combustion engine. A first quantity (SIMP), based on first characteristic operating quantities, which characterizes the amount of substances supplied to the exhaust gas aftertreatment system is determined in a first operating state. A second quantity (SIMR), based on second characteristic operating quantities, which characterizes the amount of substances removed from the exhaust gas aftertreatment system is determined in a second operating state. The first quantity and the second quantity are compared for error detection.Type: ApplicationFiled: October 11, 2002Publication date: July 10, 2003Inventors: Rainer Strohmaier, Stefan Zimmermann, Martin Bauer
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Patent number: 6544394Abstract: A sensor for determining gas components and concentrations in a gas mixture that is particularly suitable for analyzing HC, NOx and CO in exhaust gases of internal combustion engines in the sensor, an outer electrode, that is separated from an MOx electrode by an electrolyte layer, is applied on a substrate. In this context, the outer electrode and the MOx electrode are in communication with the gas mixture to be analyzed. In addition, the outer electrode contains a region that is in contact with a gas-permeable tunnel layer which in turn contains a region that is directly exposed to the gas mixture to be analyzed, so that the gas to be analyzed can be supplied to the outer electrode via the gas-permeable tunnel layer.Type: GrantFiled: November 30, 2000Date of Patent: April 8, 2003Assignee: Robert Bosch GmbHInventors: Rainer Strohmaier, Carsten Springhorn, Detlef Heimann, Thomas Wahl, Margret Schuele, Bernd Schumann, Bernhard Bloemer