Robert Boschgmbh

Frank Stanglmeier

Bernd Schumann

Karl-Hermann Friese

Jens Stefan Schneider

Jens Schneider

Hans-Martin Wiedenmann

Harald Neumann

Thomas Moser

Eberhard Schnaibel

Werner Herden

Lothar Diehl

Andreas Blumenstock

Manfred Vogel

Klaus Winkler

Walter Benedikt

Wolfgang Schmidt

Thomas Wahl

Andreas Koring

Holger Bellmann

Matthias Kuesell

Bernd Rattay

Siegfried Nees

Ulrich Eisele

Gert Lindemann

Christoph Kern

Johann Riegel

Friederike Lindner

Wolfgang Dressler

Johann Konrad

Eckart Reihlen

Albrecht Geissinger

Helge Schichlein

Josef Tosch

Volker Rothacker

Marc Rosenland

Hans Baumann

A method for operating at least one sensor element for detecting at least one property of a gas in a measured-gas space is described. The method comprises at least the following steps: at least one first step, in the first step at least one parameter being ascertained; at least one second step, in the second step the parameter being compared with at least one comparison value, in accordance with that comparison at least one feature being allocated to the sensor element or to at least one part of the sensor element. An apparatus for carrying out the method is also described.

Method for operating a gas sensor element and device for carrying out said method

A stopper for sealing a housing of an exhaust gas sensor has: a base body which contains polytetrafluoroethylene; at least one through channel for leading through a connecting cable; and a seal situated, at least in places, between the base body of the stopper and the through channel, the seal containing at least one perfluoroalkoxy polymer or one tetrafluoroethylene perfluoroproylene or one polychlorotrifluoroethylene or one polyvinylidene fluoride.

Stopper for sealing the housing of an exhaust gas sensor, exhaust gas sensor, and manufacturing method for an exhaust gas sensor

A plug for sealing a housing of an exhaust gas sensor, the plug having at least one axial through-channel for leading through a connecting cable, the plug having a main body which includes polytetrafluoroethylene, the plug further including at least one outer seal which is situated on the plug radially on the outside, the outer seal including at least one perfluoroalkoxy polymer or tetrafluoroethylene-perfluoropropylene or polychlorotrifluoroethylene or polyvinylidene fluoride.

Plug for sealing a housing of an exhaust gas sensor, exhaust gas sensor and manufacture of an exhaust gas sensor

The invention relates to an exhaust gas probe () for measuring properties of the exhaust gas of internal combustion engines, wherein at least one data storage unit () is arranged in a circuit associated with the probe, in particular arranged in a probe plug () or a connecting element associated therewith. The following properties and/or adaption functions characterizing the probe () are stored or storable in said data storage unit: &#x2014;fluctuations of heating resistances that are due to the production process and/or&#x2014;parameters that characterize the aging of the probe (), and/or&#x2014;the shut-off state, in particular data that characterize the execution of an interval measurement for regenerating the exhaust gas probe or of a delayed shut-off and/or&#x2014;data for adapting the probe () to different control devices () of internal combustion engines and/or&#x2014;the number of operating hours of the probe and/or&#x2014;the operating parameters of the probe in a previous specifiable time period.

Data storing exhaust gas probe

A catalytically active layer that is used, for example, as an electrode for a solid electrolyte-based sensor element of a gas sensor for determining a gas component in a gas mixture. The catalytically active layer includes a metallic component, that includes a noble metal in the form of platinum, rhodium, and/or palladium, and additionally a base metal. At least a portion of the originally present base metal is replaced by cavities in the metallic component.

Catalytically active layer

A passive, high-temperature-resistant resistor element for measuring temperature is provided, the resistor element having an essentially interior insulating layer and two exterior conducting layers of a ceramic composite structure; the conducting layers being connected to one another at the tip of the resistor element; and the ceramic composite structure including trisilicon tetranitride, a metal silicide, and yttrium oxide or trisilicon tetranitride, a metal silicide, and a matrix phase of SiOCN, where x signifies 1&#x2013;2, y signifies 0&#x2013;2, and w signifies 0&#x2013;2. A combination element of this resistor element and a sheathed type glow plug, for example, is also provided.

Passive, high-temperature-resistant resistor element for measuring temperature in passenger and commercial vehicles

A coating system and a method for its manufacture are provided. An electrically conductive base coat and a porous overcoat lying over the base coat are arranged on a ceramic substrate. At least one additional deposited layer is arranged on the base coat in such a way that the additional layer is formed in the pores of the porous overcoat adjacent to the base coat. The additional layer is deposited either by currentless or electrolytic deposition. For electrolytic deposition of the additional layer, the ceramic substrate sintered with the base coat and the overcoat is submerged in an electrolytic bath and the base coat is connected as a cathode. The currentless deposition takes place from a solution of the metal to be deposited with the addition of a reducing agent.

Coating system and method for its manufacture and its use

An electrochemical gas sensor determining the concentration of oxidizable gas components which has an electrochemical measuring cell having a measuring electrode and a reference electrode. Measuring electrode is made of a material which is not able, or not completely able to catalyze the establishment of gas equilibrium. In addition to the electrochemical measuring cell, at least one electrochemical pumping cell, having at least one inner pumping electrode, is provided, which, together with measuring electrode, is positioned in a measuring gas compartment. Oxygen is pumped into or out of measuring gas compartment by pumping cell, the partial pressure of oxygen in measuring gas compartment being set to a lambda value of &#x2267;1.3.

Oxidizable gas component sensor and method of using the sensor

An internal combustion engine ( ), especially for a motor vehicle, is described, which has a three-way catalytic converter ( ) and a storage catalytic converter ( ) which can be loaded with and unloaded of nitrogen oxides. A diagnosis of the storage catalytic converter ( ) is carried out by a control apparatus ( ) below a temperature at which the three-way catalytic converter ( ) does not yet operate.

Method for operating a three-way catalyst of an internal combustion engine

An internal combustion engine ( ), especially for a motor vehicle, is described, which has a catalytic converter ( ) which can be loaded with and unloaded of nitrogen oxides. An NOx sensor ( ) is provided with which NOx emissions can be measured downstream of the catalytic converter ( ). The catalytic converter ( ) can be only partially loaded by a control apparatus ( ). An increased NOx emission can be generated forward of or in the catalytic converter ( ) by the control apparatus ( ). A conclusion can be drawn as to the operability of the catalytic converter ( ) by the control apparatus ( ) from NOx emissions measured downstream.

Method for operating the catalyst of an internal combustion engine

A gas sensor and a method for its manufacture are described. The gas sensor has a solid electrolyte having at least one measuring electrode and one porous protective coating. The measuring electrode has an electrically conductive base layer and a further layer, the further layer god being deposited in the pores of the porous protective coating adjacent to the base layer via galvanic deposition. In order to deposit the further layer via galvanic deposition, the basic body, which has been fused with the base layer and the protective coating via vitrification, is immersed in a galvanizing bath, the base layer being connected as the cathode.

Gas sensor and corresponding production method

Coated system and method for its manufacture and its use

An oxygen sensor for determining the oxygen concentration in the exhaust gas flow of an internal combustion engine. The sensor includes an outer electrode exposed to the exhaust side and a reference electrode exposed to the ambient air. In the sensor, a space adjacent to the reference electrode or surrounding the reference electrode has an adsorbing and/or absorbing agent, which is introduced, for example, in a loose powder packing or a multiple pellet packing. Other versions of the novel oxygen sensor also have an oxygen supplying material, such as, for example, Mn-oxide, Ba-oxide and/or Ce-oxide, to help promote combustion of exhaust gas components/pollutants and any residue chemicals left remaining from the sensor manufacturing process.

Oxygen sensor

A process for applying materials to a carrier, for which the material is atomized just prior to applying it by compressed air that is supplied separately. The process is particularly suited for the application of electrically conductive material to carriers of ceramics materials.

Process of applying material, in particular for the production of

A method for determining the adhesion of material layers of any composition on sintered ceramic elements, in particular of material layers on sensor elements for determining gas constituents in gas mixtures. The coated ceramic elements are immersed in an immersion bath consisting of a protic acid, and then subjected to a shock-type heat treatment. Adhesion is then assessed.

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Moeglingen, Germany

Frank Stanglmeier