Patents by Inventor Hans-Joerg Renz
Hans-Joerg Renz 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: 20180321182Abstract: A sensor element for an exhaust gas sensor includes a ceramic base body whose surface includes at least one surface region that is electrically insulating, the sensor element including at least one flat guide structure, which is electrically conductive, along the surface region of the base body. The guide structure is partially embedded in the base body in a direction perpendicular to the surface.Type: ApplicationFiled: November 3, 2016Publication date: November 8, 2018Inventors: Hans-Joerg Renz, Ingrid Gerner, Jens Schneider, Sabine Roesch, Sarah Richter
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Publication number: 20110214989Abstract: A sensor element for determining at least one property of a gas in a measuring gas chamber, in particular for detecting a gas component in a gas mixture. The sensor element includes at least one cell having at least one first electrode, at least one second electrode and at least one solid electrolyte connecting the first electrode and the second electrode having a solid electrolyte material. The sensor element further includes at least one carrier element made of a carrier material, the carrier material having a lower ionic conductivity than the solid electrolyte material. The carrier element is configured and situated to confer mechanical stability on the cell.Type: ApplicationFiled: November 17, 2009Publication date: September 8, 2011Inventors: Andreas Opp, Hans-Joerg Renz
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Publication number: 20080271518Abstract: A gas sensor, in particular for determining the oxygen content in exhaust gases of internal combustion engines, having a housing, a sensor element having a multi-layer design which is situated in the housing, and connecting lines lead to the outside for contacting the sensor element. A contacting element of a connecting line penetrates a layer of the sensor element and part of an insulating element situated outside the sensor element. For contacting the sensor element, such a contact configuration makes it possible to directly contact the contacting element of the connecting line, which may be arranged as a contacting pin, to the printed conductor which is formed inside the sensor element.Type: ApplicationFiled: October 7, 2005Publication date: November 6, 2008Inventors: Christoph Treutler, Ralf Schmidt, Stefan Henneck, Hans-Joerg Renz, Uwe Glanz, Leonore Schwegler, Juergen Ruth, Juergen Sindel, Stefan Nufer, Henrik Schittenhelm, Georg Rixecker
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Patent number: 7445699Abstract: A gas sensor for detecting at least one physical magnitude of a gas, in particular of exhaust gases of an internal combustion engine, is proposed, which includes a sensor element having an electrochemical cell. The electrochemical cell includes a first solid electrolyte member on which a first electrode and a second electrode are applied. The first and the second electrode are electrically connected by means of the first solid electrolyte member. The first electrode is in contact with the gas. The area of the first electrode is smaller than the area of the second electrode.Type: GrantFiled: October 4, 2002Date of Patent: November 4, 2008Assignee: Robert Bosch GmbHInventors: Heiner Scheer, Carsten Springhorn, Hans-Joerg Renz, Frank Haag, Walter Strassner, Lothar Diehl, Thomas Moser, Stefan Rodewald, Marten Mamey, Jürgen Karle
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Publication number: 20070246358Abstract: A sensor element is described for determining a physical property of a measuring gas, in particular the pressure or the concentration of a gas component in a gas mixture, in particular in the exhaust gas of an internal combustion engine. The sensor element has an electrode exposed to the measuring gas and a reference electrode exposed to a reference gas, ambient air in particular, through a porous volume. The two electrodes are separated from one another by a solid electrolyte. To avoid premature aging of the reference electrode as a result of deposits of foreign substances contained in the reference gas or of chemical interactions caused by the foreign substances, the volume material is selected with respect to its physical and chemical properties in such a way that the foreign substances are bound in the volume and/or are subjected to a chemical reaction.Type: ApplicationFiled: April 27, 2005Publication date: October 25, 2007Applicant: ROBERT BOSCH GMBHInventors: Jens Schneider, Detlef Heimann, Thomas Wahl, Thomas Egner, Gerhard Schneider, Hans-Joerg Renz, Harald Neumann, Andreas Schaak
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Patent number: 7175884Abstract: A method for manufacturing a layer system, in particular for a sensor element for determining a physical variable of a gas to be measured, preferably for determining the concentration of a gas component or the temperature in an exhaust gas of an internal combustion engine. The layer system is composed of a ceramic carrier and at least one functional layer to which a solvent is added. A barrier layer is deposited on the ceramic carrier and the functional layer is deposited on the barrier layer. The barrier layer prevents the solvent from penetrating the ceramic carrier from the functional layer.Type: GrantFiled: August 20, 2003Date of Patent: February 13, 2007Assignee: Robert Bosch GmbHInventor: Hans-Joerg Renz
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Patent number: 7083710Abstract: The reference air channel of a gas sensor or a lambda probe having a laminate body produced by printing technology is provided. The laminate body is produced by printing a suitably structured layer onto a neighboring layer, for example, by screen printing.Type: GrantFiled: December 14, 2000Date of Patent: August 1, 2006Assignee: Robert Bosch GmbHInventors: Heiner Scheer, Hans-Martin Wiedenmann, Josef Hickl, Thomas Wahl, Gerhard Schneider, Harald Neumann, Lothar Diehl, Jurgen Karle, Hans-Joerg Renz
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Publication number: 20060159315Abstract: A method for manufacturing a sensor element for a gas sensor for determining a physical property of a test gas, particularly its temperature or the concentration of a gas component in a gas mixture, is provided, the sensor element having a hollow, finger-shaped solid electrolyte body, a measuring electrode resting outside on the solid electrolyte body, a reference electrode resting inside on the solid electrolyte body as well as circuit traces leading from the electrodes to contact areas. For a simplified manufacture of the finger shape of the sensor element with its mechanical advantages as compared to a planar sensor element, a planar carrier made of a deep-drawable ceramic material is printed on each of its carrier surfaces facing away from each other with a layer made of electrically conductive material in a defined geometric shape, and the printed carrier is deep-drawn into the finger shape.Type: ApplicationFiled: December 7, 2005Publication date: July 20, 2006Inventor: Hans-Joerg Renz
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Unheated planar sensor element for determining the concentration of a gas component in a gas mixture
Patent number: 6940287Abstract: An unheated planar sensor element for determining the concentration of a gas component in a gas mixture, in particular the oxygen concentration in the exhaust gas of an internal combustion engine, has a sensor foil made of a solid electrolyte with an outer electrode exposed to the measuring gas, and an inner electrode exposed to a reference gas, as well as a reference-gas channel, which is covered by the sensor foil on one side and accommodates the inner electrode. To produce a small-volume, cost-effective unheated sensor element for use in small combustion engines having low power output yet sufficiently satisfactory measuring accuracy, the reference-gas channel is sealed on the underside by an additional sensor foil made of a solid electrolyte, and covered by an inner electrode lying inside the reference-gas channel and an outer electrode exposed to the measuring gas.Type: GrantFiled: March 10, 2004Date of Patent: September 6, 2005Assignee: Robert Bosch GmbHInventors: Helmut Weyl, Jens Schneider, Detlef Heimann, Thomas Wahl, Hans-Joerg Renz, Norman Hahn, James Richard Waldrop, II, Damien Barnes, Mike McCormick, John Day -
Publication number: 20050155857Abstract: A sensor element constructed in layers for detecting a physical property of a gas or liquid, and in particular for detecting the concentration of a gas component or the temperature of an exhaust gas of an internal combustion engine. The sensor element includes a first and second layer as well as at least one contact face, which is disposed in a layer plane between the first and second layers. In the region of the contact face, the first layer includes a recess.Type: ApplicationFiled: February 17, 2003Publication date: July 21, 2005Inventors: Theodor Graser, Thomas Wahl, Hans-Joerg Renz, Frank Stanglmeier, Juergen Sindel
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Unheated planar sensor element for determining the concentration of a gas component in a gas mixture
Publication number: 20050093551Abstract: An unheated planar sensor element for determining the concentration of a gas component in a gas mixture, in particular the oxygen concentration in the exhaust gas of an internal combustion engine, has a sensor foil made of a solid electrolyte with an outer electrode exposed to the measuring gas, and an inner electrode exposed to a reference gas, as well as a reference-gas channel, which is covered by the sensor foil on one side and accommodates the inner electrode. To produce a small-volume, cost-effective unheated sensor element for use in small combustion engines having low power output yet sufficiently satisfactory measuring accuracy, the reference-gas channel is sealed on the underside by an additional sensor foil made of a solid electrolyte, and covered by an inner electrode lying inside the reference-gas channel and an outer electrode exposed to the measuring gas.Type: ApplicationFiled: March 10, 2004Publication date: May 5, 2005Inventors: Helmut Weyl, Jens Schneider, Detlef Heimann, Thomas Wahl, Hans-Joerg Renz, Norman Hahn, James Waldrop, Damien Barnes, Mike McCormick, John Day -
Patent number: 6883363Abstract: The ceramic sensor body, held inside a housing by a sealing packing, is provided with a circumferential coating of an electrically insulating material in the region of the sealing packing, so that the sensor body remains potential-free with respect to the housing, even when a sealing packing is used that is made of a material having poor electrical insulating qualities. In this manner, a glass putty is used for the sealing packing, which, while having comparatively poor insulating characteristics, provides a good sealing effect at high loading capacity.Type: GrantFiled: May 31, 2002Date of Patent: April 26, 2005Assignee: Robert Bosch GmbHInventors: Helmut Weyl, Hans-Joerg Renz, Lothar Diehl, Juergen Karle
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Publication number: 20050034986Abstract: A gas sensor for detecting at least one physical magnitude of a gas, in particular of exhaust gases of an internal combustion engine, is proposed, which includes a sensor element having an electrochemical cell. The electrochemical cell includes a first solid electrolyte member on which a first electrode and a second electrode are applied. The first and the second electrode are electrically connected by means of the first solid electrolyte member. The first electrode is in contact with the gas. The area of the first electrode is smaller than the area of the second electrode.Type: ApplicationFiled: October 4, 2002Publication date: February 17, 2005Inventors: Heiner Scheer, Carsten Springhorn, Hans-Joerg Renz, Frank Haag, Walter Strassner, Lothar Diehl, Thomas Moser, Stefan Rodewald, Marten Mamey, Jurgen Karle
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Publication number: 20040205954Abstract: A method for manufacturing a layer system, in particular for a sensor element for determining a physical variable of a gas to be measured, preferably for determining the concentration of a gas component or the temperature in an exhaust gas of an internal combustion engine. The layer system is composed of a ceramic carrier and at least one functional layer to which a solvent is added. A barrier layer is deposited on the ceramic carrier and the functional layer is deposited on the barrier layer. The barrier layer prevents the solvent from penetrating the ceramic carrier from the functional layer.Type: ApplicationFiled: August 20, 2003Publication date: October 21, 2004Inventor: Hans-Joerg Renz
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Patent number: 6805830Abstract: A method for manufacturing a sensing element is provided, in particular for determining the oxygen content in exhaust gases of internal combustion engines, a composite construction having at least one ceramic paste (green film) present in film form being sintered to yield the sensing element, and sharp edges of the sensing element being blunted before sintering to increase the thermal shock resistance of the sensing element.Type: GrantFiled: March 31, 1999Date of Patent: October 19, 2004Assignee: Robert Bosch GmbHInventors: Theodor Graser, Olaf Jach, Hans-Jörg Renz, Harald Neumann, Anton Hans
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Patent number: 6746585Abstract: A gas sensor has improved electrical properties. In the top view of the layer planes of the body of the sensor, printed circuit traces for electrodes are arranged outside of cavities in the body, e.g., outside of the reference air duct. Furthermore, the electrodes are enlarged in the direction of the exhaust-side end of the sensor. Also, the printed circuit traces have an increased layer thickness or are formed as a double layer.Type: GrantFiled: July 25, 2002Date of Patent: June 8, 2004Assignee: Robert Bosch GmbHInventors: Heiner Scheer, Hans-Joerg Renz, Johann Riegel, Lothar Diehl, Sabine Thiemann-Handler
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Publication number: 20040040846Abstract: A sensor element (10) for determining a gas component, in particular for determining the oxygen concentration in exhaust gases of internal combustion engines, is described; a measurement gas space (41) is introduced into the sensor element (10), and at least one electrode (31, 32) is provided in the measurement gas space, which is connected to the gas outside the sensor element (10) via a gas inlet opening (43). A diffusion barrier (44) is provided between the gas inlet opening (43) and the electrode (31, 32). At least one spacer element (50, 51) is provided in at least some areas of the measurement gas space (41) and has a higher pore content than the diffusion barrier (44) or it allows access of the measurement gas to at least the areas of the electrode (31, 32) not covered by the spacer element (50, 51).Type: ApplicationFiled: September 4, 2003Publication date: March 4, 2004Inventors: Detlef Heimann, Hans-Joerg Renz, Ulrich Eisele, Lothar Diehl, Thomas Moser, Juergen Karle
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Publication number: 20040011116Abstract: The ceramic sensor body, held inside a housing by a sealing packing, is provided with a circumferential coating of electrically insulating material in the region of the sealing packing, so that the sensor body remains potential-free with respect to the housing, even when a sealing packing is used that is made of a material having poor electrical insulating qualities. In this manner, it is also possible to use a glass putty for the sealing packing, which, while having comparatively poor insulating characteristics, provides a good sealing effect at high loading capacity.Type: ApplicationFiled: July 22, 2003Publication date: January 22, 2004Inventors: Helmut Weyl, Hans-Joerg Renz, Lothar Diehl, Juergen Karle
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Patent number: 6676818Abstract: For the reduction of internal stresses and formation of cracks caused thereby, an exhaust gas probe includes two measuring electrodes separated by a solid electrolyte layer made substantially of ZrO2 and a circuit-board conductor layer for electrically heating the solid electrolyte layer. The circuit-board conductor layer is firmly connected to the solid electrolyte layer via a first sealingly sintered insulating layer made of an Al2O3-containing material. A pore-forming material is added to the Al2O3-containing material before. sintering.Type: GrantFiled: March 30, 2001Date of Patent: January 13, 2004Assignee: Robert Bosch GmbHInventors: Jens Stefan Schneider, Detlef Heimann, Hans-Joerg Renz, Harald Neumann, Bernd Schumann, Lothar Diehl
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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