Abstract: Herein is disclosed a multichip reference logging system comprising a control circuit, configured to generate a reference signal; a first chip, configured to generate a first operations log, the first chip further comprising a first reference circuit, configured to receive the reference signal and to create a first reference event in response to the received reference signal; a memory associated with the first chip, configured to store the first reference event within the first operations log; a second chip, configured to generate a second operations log, the second chip further comprising a second reference circuit, configured to receive the reference signal and to create a second reference event in response to the received reference signal; and a memory associated with the second chip, configured to store the second reference event within the second operations log.

Abstract: Herein is disclosed a multichip reference logging system comprising a control circuit, configured to generate a reference signal; a first chip, configured to generate a first operations log, the first chip further comprising a first reference circuit, configured to receive the reference signal and to create a first reference event in response to the received reference signal; a memory associated with the first chip, configured to store the first reference event within the first operations log; a second chip, configured to generate a second operations log, the second chip further comprising a second reference circuit, configured to receive the reference signal and to create a second reference event in response to the received reference signal; and a memory associated with the second chip, configured to store the second reference event within the second operations log.

Abstract: A method for controlling an anti-sound system includes measuring sound within an exhaust system of a vehicle, calculating a control signal based on the measured sound, calculating a thermal load to be expected of the at least one loudspeaker of the anti-sound system during operation with a control signal based on a mathematical model of a thermal behavior of the loudspeaker and/or a mechanical load to be expected of the at least one loudspeaker of the anti-sound system based on a mathematical model of a mechanical behavior the loudspeaker, comparing the calculated thermal and/or mechanical load with a specified maximum load, operating the loudspeaker with the control signal, if the calculated thermal and/or mechanical load is smaller than or equal to the maximum load, and changing the spectrum of the control signal, in order to receive a corrected control signal, if the calculated load is greater than the maximum load.

Abstract: A particulate filter for separating particulates out of an exhaust gas flow of an internal combustion engine has a filter body with an inflow region and an outflow region. The filter body is formed by alternately arranged inflow ducts that are open toward the inflow region and are closed toward the outflow region, and outflow ducts that are open toward the outflow region and closed toward the inflow region. The filter body has a plurality of substantially planar filter plates arranged parallel to one another. Each of the inflow ducts and the outflow ducts is formed by adjacent filter plates, and is arranged in a housing. The inflow ducts are open at at least one of their lateral regions in such a way that the inflow region extends over at least two sides of the filter body. At least one sealing element is provided for sealing off the filter body in the outflow region relative to the housing.

Abstract: The invention relates to an exhaust particulate filter with a filter body (4), comprising a number of filter pockets (3) arranged one behind the other and formed by filter plates (1), the filter plates (1) having a planar cutout opening (2). According to the invention, it is provided that the peripheral contour (8) of the planar cutout opening (2) comprises points which are located at different distances from the centroid (S) of the area of the cutout opening (2). For an exhaust particulate filter according to the invention, it is further provided that the centroid (S) of its at least one area of the cutout opening (2) is arranged at a distance from the central longitudinal axis (7) of the filter body (4) on the filter plate (1) or that the filter body (4) has filter plates (1) with different cutout openings (2). The exhaust particulate filter is suitable in particular for an application in motor vehicles with a diesel engine.

Abstract: The invention relates to a tubbing (2) for a tubbing ring (1) used in underground tunnel works in which a front tubbing face (4) and a rear tubbing face (5) are provided. At least one tubbing face (4, 5) is provided in the shape of a spherical shell.

Abstract: The invention describes a filter device having filter elements (2 through 6; 12 through 20; 22 through 25) made of ceramic material which are combined into at least one filter element group (1, 11, 21) in which the filter elements (2 through 6, 12 through 20; 22 through 25) lie side by side next to one another and can be flowed through in parallel, which is characterized in that only some of the filter elements (2, 12, 22, 23) of each filter element group (1, 11, 21) have electrical terminals for connection with an electrical energy source, and at least that/those filter element(s) (2, 12, 22, 23) is/are made of electrically conductive ceramic material.

Abstract: A filter having two zones, the first zone having a low electrical conductivity and the second zone having a high electrical conductivity at electrode attachment zones due to infiltration of metal within the second zone.

Abstract: The invention describes a filter device having filter elements (2 through 6; 12 through 20; 22 through 25) made of ceramic material which are combined into at least one filter element group (1, 11, 21) in which the filter elements (2 through 6, 12 through 20; 22 through 25) lie side by side next to one another and can be flowed through in parallel, which is characterized in that only some of the filter elements (2, 12, 22, 23) of each filter element group (1, 11, 21) have electrical terminals for connection with an electrical energy source, and at least that/those filter element(s) (2, 12, 22, 23) is/are made of electrically conductive ceramic material.

Abstract: A filter system includes a longitudinally extending housing having a housing inlet and a housing outlet. A plurality of longitudinally extending, cross-sectionally rectangular cassette cases are exchangeably mounted within the housing. Each cassette case has an inlet associated with the housing inlet for receiving a medium to be filtered, and an outlet associated with said housing outlet for supplying filtered medium thereto. A plurality of longitudinally extending, cross-sectionally rectangular apertured filter elements formed of a ceramic filter medium are affixed within each cassette case. Each filter element of each cassette case extends along and is disposed adjacent at least one filter element of the associated cassette case. Each filter element has an inlet for receiving medium to be filtered and an outlet from which filtered medium flows.

Abstract: A porous, flow-through molded body, designed specifically for use in the removal of diesel soot particles from the exhaust gas of diesel engines. It includes a reciprocally closed honeycombed body made of silicon carbide and possessing the following features.wall thickness: 1.25.+-.0.5 mm;porosity: 55 to 60%;average pore diameter: 25 to 70 .mu.m;specific permeability: 20 to 100 nPm.In the production method, a starting powder of silicon or a mixture of silicon with portions of silicon carbide and/or carbon is combined with an organic binding agent that can be coked and molded into a green body. This is then subjected to a coking fire in an inert-gas atmosphere; the molded body obtained in this manner is then heated in the presence of nitrogen or a nitrogenous inert gas to a temperature where free silicon is converted with the carbon, in a reaction firing, to silicon carbide. Additionally, a recrystallization firing at greater than 2000.degree. C. is implemented.

Abstract: A porous permeable molded body designed especially for use in the removal of diesel soot particles from the exhaust gas of diesel engines is disclosed. The body includes an alternatingly closed honeycombed body made of silicon carbide and possessing the following features:______________________________________ wall thickness: 1.25 .+-. 0.5 mm; porosity: 55 to 60%; average pore diameter: 25 to 70 .mu.m; specific permeability: 20 to 100 nPm. ______________________________________In the production method, a starting powder of silicon or a mixture of silicon with portions of silicon carbide and/or carbon is combined with an organic binding agent that can be coked and molded into a green body. This is then subjected to a coking fire in an inert-gas atmosphere; the molded body obtained in this manner is then heated in the presence of nitrogen or a nitrogenous inert gas to a temperature where free silicon is converted with the carbon, in a reaction firing, to silicon carbide.