Method for regulating the control of a heating device for regenerating a particle filter that is switched on in the exhaust line of an internal combustion engine

摘要

A method for regulating the control of a heating device for regenerating a particle filter switched on in the exhaust line of an internal combustion engine, for example a diesel engine, in which exhaust gas back pressure generated by the particle filter is detected as a measure of the soot loading state of the particle filter is determined by the exhaust gas pressure S¶IST ¶ is measured when the conditions are met, DOLLAR A - that the engine is idling, DOLLAR A - that the exhaust gas recirculation EGR is switched off and DOLLAR A - that in the part of the exhaust line upstream of the particulate filter, conditions corresponding to this engine operating state have been established and DOLLAR A that the exhaust gas back pressure signal S¶IST¶ is then compared with a threshold value S¶W¶ which represents a sufficient soot load to trigger regeneration of the particle filter and the heating device is switched on or off to trigger the regeneration process can be switched if the detected exhaust gas back pressure signal S¶IST¶ is greater than the threshold value S¶W¶.