Combustion control by particle filter regeneration

• Main Authors: Bouchez, Matthias, Dementhon, Jean-Baptiste
• Format: Patent
• Language: English
• Published: 02.12.2003

The present invention relates to a process and to a device for controlling the regeneration of a system for collecting carbon-containing elements, such as a particle filter installed on a gaseous flow system, for example in an internal-combustion engine, by means of differential measurement of the fuel/air ratio of the gas at the boundaries of the filtering element. Process and device for controlling the regeneration of an element filtering oxidable particles carried along by a gaseous stream, by periodic combustion of these particles, such as, for example, the carbon-containing particles carried along in the exhaust gas of a thermal engine (), retained in an exhaust silencer ().In an application to a thermal engine, the process comprises detecting the variation, measured by detectors (), in the oxygen content of the gaseous stream between at least a first point located upstream, in relation to the direction of flow, from filtering element () receiving the stream and at least a second point located downstream from the first one, resulting from a reaction of combustion of the particles accumulated in the filtering element, initiated by a management element () acting for example on the running of engine (), which allows the latter to adjust with precision the stage of regeneration of the filtering element and therefore to limit overconsumption as far as possible.