Abstract: Active sensor for switching over into a special operating mode, wherein the sensor has at least one sensor element, one evaluation circuit and two connecting lines, each with a terminal for transmitting the sensor information, wherein a supply voltage of the sensor is applied to the two connecting lines, wherein the sensor comprises a switchover module with which it is possible to switch over between a normal operating mode and a special operating mode by reversing the polarity of the supply voltage which is applied to the two terminals. A method for actuating an active sensor and to the use of the sensor, in particular as a wheel speed sensor, in motor vehicles.

Abstract: To provide a cell connector for the electrically conductive connection of a first cell terminal of a first electrochemical cell and a second cell terminal of a second electrochemical cell of an electrochemical device, which allows a reliable and fail-safe connection of the cell terminals, it is proposed that the cell connector comprises a first contact section for connection to the first cell terminal, a second contact section for connection to the second cell terminal and an elastically and/or plastically deformable compensation region, which connects the first contact section and the second contact section to one another and allows a movement of these contact sections relative to one another.

Abstract: A position-sensor and/or speed-sensor arrangement comprising a sensor with at least a first sensitive main plane and an encoder with at least one encoder track face. The sensor senses a magnetic field generated and/or modulated by the encoder, and the sensor has at least a first magnetic field sensor element and a second magnetic field sensor element. The first magnetic field sensor element has at least a first main sensing direction and the second magnetic field sensor element has an at least second main sensing direction different from the first main sensing direction. The first magnetic field sensor element and the second magnetic field sensor element are arranged such that at least an element output signal of the first magnetic field sensor element has a phase shift absolute value between 75° and 105° with respect to at least one element output signal of the second magnetic field sensor element.

Abstract: Disclosed is an arrangement for detecting rotational speed of a wheel or any other rotating body by a sensor (1, 6), which is coupled via a magnetic field to an encoder (23) that rotates with the rotating body. If a slot between sensor element (S1, S2) and encoder (23) becomes too small in the prior art arrangements, flipping and, hence, doubling of the measured rotational speed of the wheel can occur. This caused problems in safety devices of a vehicle, which require a correct indication of the wheel rotational speed for proper operation. To improve the tolerance with respect to the mounting position of the known arrangements, two separated signal paths (S1, f1; S2, f2) are provided with sensor elements (S1, S2) of differing sensitivity.

Abstract: Sensor arrangement including a torque sensor for measuring the torque acting on a first shaft, the sensor arrangement having a rotational angle index unit which is designed in such a manner that it can detect and/or identify the angular position of the first shaft with respect to a defined rotational angle and/or defined rotational angle range.

Abstract: In order to provide a flat gasket, in particular cylinder head gasket, comprising at least one metal gasket sheet made of a spring steel or a metallic material with a percentage elongation after fracture corresponding to the percentage elongation after fracture of a spring steel, which has a novel structure, it is proposed that the gasket sheet is provided with at least one edging fold, which comprises a bending region and a flange region connected in one piece to the gasket sheet via the bending region.

Abstract: In order to produce a connecting device for the electrically conductive connection of a plurality of cell terminals of electro-chemical cells of an electro-chemical device which enables the cell connector to be mounted on the electro-chemical cells in a simple and rapid manner wherein the device comprises two or more cell connectors for respectively connecting two cell terminals of different electro-chemical cells to one another in electrically conductive manner, it is proposed that, in an assembly state of the connecting device, at least two cell connectors be integrally connected together after separating out the cell connectors from a starting material.

Abstract: A sensor and method for determining at least one internal parameter for an active sensor in a special mode of operation. The sensor has at least one sensor element, an evaluation circuit, at least two connecting lines, and a changeover module. The sensor is changed over between a normal mode of operation and the special mode of operation by means of the changeover module and is put into the special mode of operation for the purpose of determining the at least one internal parameter. The sensor has an electric offset source which is used in the special mode of operation to at least partially actuate the evaluation circuit on the basis of the supply voltage of the sensor which is applied to the two connecting lines such that the at least one internal parameter of the sensor can be ascertained from the sensor output signal.

Abstract: Flat gasket comprising a first sheet metal layer consisting of a spring steel and a second sheet metal layer consisting of a ductile steel, the first layer being provided with a sealing bead, and the second layer being provided in an edge area bordering on an edge of the layer with a thickened zone as supporting element for receiving pressing forces; to increase the design possibilities for such a supporting element, the latter is formed by at least one elongate arch of the second layer, which is stamped into the edge area of the second layer and extends approximately parallel to the free edge of the edge area, the arch being compressed in such a way that the metal volume of the supporting element is at least three times the total hollow space volume which the supporting element and two tangential planes abutting on the latter and extending parallel to the plane of the second layer include between them.

Abstract: In order to provide a sealing assembly for a fuel cell stack comprising a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein each of the fuel cell units comprises a housing with at least one housing part made of a metallic material, which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing assembly comprises at least one intermediate element made of a metallic material, wherein the intermediate element is soldered to a housing part of a first fuel cell unit at least one location by means of a metal solder and is secured to a housing part of a second fuel cell unit at least another location, wherein the intermediate element and/or the housing part of the first fuel cell unit is provided with a coating made of a ceramic material.

Abstract: Active sensor for switching over into a special operating mode, wherein the sensor has at least one sensor element, one evaluation circuit and two connecting lines, each with a terminal for transmitting the sensor information, wherein a supply voltage of the sensor is applied to the two connecting lines, wherein the sensor comprises a switchover module with which it is possible to switch over between a normal operating mode and a special operating mode by reversing the polarity of the supply voltage which is applied to the two terminals. A method for actuating an active sensor and to the use of the sensor, in particular as a wheel speed sensor, in motor vehicles.

Abstract: A computer implemented method and system for comparative analysis of business processes, in particular for process maturity evaluation. A process vitality index (PVI) is mapped onto a binary decision tree that provides unambiguous, YES/NO questions at its nodes. A user is guided by these questions. The tree provides the minimum required steps for an evaluation based on common process characteristics. At least two of the nodes of the binary decision tree are interlinked in view of interdependencies between categories to enforce specific YES/NO inputs and thus provide an automated consistency check at each node.

Abstract: Disclosed is an arrangement for the intrinsically safe detection of movements of a body, such as a wheel. The arrangement includes a magnetic encoder (5, 25) and a sensor (26), the magnetic encoder (5, 25) moving with the body and is magnetically coupled to at least two sensor elements (S1, S2) of the sensor (26) via a magnetic air gap. The sensor (26) has at least two mutually separate signal paths (S1, f1; S2, f2) which have at least one of the sensor elements (S1, S2) and a signal conditioning stage (28, 29). A primarily measuring signal path (S1, f1) is constructed so that during normal operation represents an output signal the basic frequency of the encoder movement or the temporal profile of the output signal have patterns. The temporal occurrence of the patterns correspond to the basic relative speed between the sensor (26) and the pole pairs of the encoder (5, 25) which are detected by the sensor.

Abstract: Cylinder head gasket having a single-layered or multilayered metallic gasket plate with sealing beads in at least one metal layer, which are elastically deformable in height and surround the combustion chamber through-openings, and deformation delimiting devices which delimit the flattening of the sealing beads; in order to achieve as good a sealing function as possible in the long term and as good a protection as possible of the sealing beads against inadmissibly high deformations during operation of the engine, deformation delimiting devices, one of which is formed by a meandering bead stamped into a metal layer, and the other by a plurality of elevations stamped out of a metal layer, are provided radially inside and radially outside the sealing beads.

Abstract: Cylinder head gasket is provided having a single-layered or multilayered metallic gasket plate with sealing beads in at least one metal layer, which are elastically deformable in height and surround the combustion chamber through-openings, and deformation delimiting devices which delimit the flattening of the sealing beads. In order to achieve as good a sealing function as possible in the long term and as good a protection as possible of the sealing beads against inadmissibly high deformations during operation of the engine, the deformation delimiting devices, one of which is formed by a meandering bead stamped into a metal layer, and the other by a plurality of elevations stamped out of a metal layer, are provided radially inside and radially outside of the sealing beads.

Abstract: Cylinder head gasket with a metallic gasket plate comprising a combustion chamber opening enclosed by a bead, and a stopper surrounding the opening and delimiting deformation of the bead, the stopper formed by elevations of a gasket sheet metal layer which are obtained by deformation thereof, the stopper is designed such that in sections through the sheet metal layer along circular cylindrical surfaces coaxial with the opening the stopper comprises a row of discrete elevations following one another in a circumferential direction of the opening and corresponding depressions located directly opposite these elevations, and in a plan view of the sheet metal layer in the area of the stopper, the total area occupied by the elevations is at least half of the total area of the stopper, and the shape of the elevations differs from the shape of circular arcs at least partially enclosing the opening.

Abstract: In order to provide a flat gasket, in particular cylinder head gasket, comprising at least one metal gasket sheet made of a spring steel or a metallic material with a percentage elongation after fracture corresponding to the percentage elongation after fracture of a spring steel, which has a novel structure, it is proposed that the gasket sheet is provided with at least one edging fold, which comprises a bending region and a flange region connected in one piece to the gasket sheet via the bending region.

Abstract: In order to produce a seal arrangement for a fuel cell stack which comprises a plurality of fuel cell units that succeed one another in a stack direction wherein each of the fuel cell units comprises a housing incorporating at least one housing part consisting of a metallic material such that it exhibits an adequate electrically insulating effect and adequate mechanical rigidity even at a high operating temperature of the fuel cell stack, it is proposed that the seal arrangement comprises at least one housing part of a first fuel cell unit consisting of a metallic material which is provided with a coating of a ceramic material, wherein the housing part of the first fuel cell unit is brazed to a housing part of a second fuel cell unit by means of a metallic braze at least one position that is provided with the ceramic coating.

Abstract: In order to provide a flat gasket, in particular cylinder head gasket, comprising at least one metal gasket sheet made of a spring steel or a metallic material with a percentage elongation after fracture corresponding to the percentage elongation after fracture of a spring steel, which has a novel structure, it is proposed that the gasket sheet is provided with at least one edging fold, which comprises a bending region and a flange region connected in one piece to the gasket sheet via the bending region.

Abstract: In order to provide a fuel cell stack, comprising a plurality of fuel cell units that succeed one another along a stack direction and at least one tensioning device, by means of which the fuel cell units are braced against one another, in which different heat expansions of the fuel cell units, on the one hand, and of the at least one tensioning element, on the other hand, are compensated and which is nevertheless simply constructed and easy and quick to fit, it is proposed that the tensioning device comprises at least one tensioning element, which transmits a tensile force for tensioning the fuel cell units, and at least one resilient longitudinal expansion compensation element, which is integrated in a tensioning element or in a fastening device connecting two tensioning elements to one another.