Abstract:
A mounting includes at least one electrode producing electric fields in an exhaust gas line, a disk of electrically insulating material having inflow and outflow sides and openings for exhaust gas, and at least one electrical conductor fastened to and/or in the disk. The electrical conductor is covered by the electrically insulating material at least on the inflow side and in electrical contact with the electrodes extending toward the outflow side. Since the electrical conductor is completely surrounded by insulating material during operation, an area that must be covered by a soot layer for a leakage current to develop is increased. The leakage length increases and one or more electrodes are in the exhaust gas at the same time. The soot particles deposited on the mounting and the exhaust gas line, need to be removed less often. An exhaust line device having at least one mounting is also provided.
Abstract:
A device for treating exhaust gas containing soot particles includes at least one ionization element for ionizing soot particles, at least one filter element having at least one section to which an electric potential can be applied and at least one agglomeration unit for at least partial agglomeration of electrically charged soot particles. The agglomeration unit is disposed between the ionization element and the filter element and the agglomeration unit has at least one outer pipe and at least one inner element. The filtering power of an exhaust system of an internal combustion engine is therefore increased by an increase in the agglomeration rate of the soot particles. A motor vehicle having the device is also provided.
Abstract:
A holder for at least one electrode, in particular a discharge electrode which is suitable for producing a corona discharge, in an exhaust-gas line, includes a body through which an exhaust gas can flow and at least one electric contact for the at least one electrode. Preferably, the at least one electric contact is integrated into the body. An apparatus for fixing at least one electric electrode in an exhaust-gas line is also proposed. The apparatus has at least one such holder and the apparatus has a particle separator disposed downstream in exhaust gas flow direction.
Abstract:
A device for exhaust gas treatment in an exhaust system of an internal combustion engine, in particular in a motor vehicle, includes an electrically heatable honeycomb body through which an exhaust gas can flow. The honeycomb body is disposed in a casing tube and has at least one current-conducting structure with electric insulation for voltages greater than 24 V. A current-generating pulsed voltage is applied to the structure to heat the honeycomb body. It is thus possible for heating elements in the exhaust-gas flow to be powered by an on-board electrical system voltage of for example 48 V. A method for operating the honeycomb body is provided with which, even at operating voltages greater than 24 V, the generation of heat in the electrically heatable honeycomb body can be kept in a desired range by adjustment of a pulse width and/or repetition frequency of the pulsed voltage.
Abstract:
A device for treating a gas stream, especially an exhaust-gas stream of an internal combustion engine, includes at least one radial chamber radially conducting the gas stream and extending substantially radially from a central region to an outer collecting chamber. First and second, preferably parallel, substantially disk-shaped walls delimit the chamber. Electrodes project from the first wall into the chamber. The first wall is formed of electrically insulating material having the electrodes fastened therein and electrically interconnected by electrical conductors in or on the insulating material. Two or more chambers may be disposed, axially in series, around the central region. Very effective treatment of exhaust gas with an electric field for ionization or generating a plasma can be provided over a relatively short structural length in a flow direction. Electric fields running transversely to the flow direction provide new possibilities for selecting various parameters of the treatment device.