Patent ID: 7934374
Filing Date: 2011-05-03
Classification: F01N,F02D,Y02T

Abstract:
1. A system for regenerating a particulate filter placed in an exhaust line of an internal combustion engine, comprising: a unit configured to manage regeneration of the filter; at least one sensor configured to measure a parameter representative of mass of soot accumulated in the filter; means for initiating the regeneration of the filter, when the parameter exceeds a predefined threshold, and for stopping the regeneration when the parameter falls below a certain threshold; at least one sensor for measuring, every time the internal combustion engine is started, a parameter representative of a status of the internal combustion engine and/or of the exhaust line; means for freezing the parameter representative of the mass of soot measured before the engine was last turned off, when the sensor detects that the engine and/or the exhaust line is/are cold; means for continuously determining the difference between the frozen mass parameter and the parameter representative of the mass measured at time t; and means for adding the difference to the frozen mass parameter, when the difference has been resolved by convergence to a stable value.