METHOD AND DEVICE FOR REDUCING THE EMISSIONS OF NITROGEN OXIDES AND AMMONIA IN AN EXHAUST GAS POST-PROCESSING SYSTEM OF A HEAT ENGINE DURING CHARGE ALTERNATIONS

摘要

A method applied to a heat engine (1) having a catalyst (80) in its exhaust gas channel (30). A metering unit (110) injects a reducing agent into the exhaust gas vein (20). Travel data is available in a navigation system (130) or in the driver assistance system (120). For the transient conditions of the motor (1), from the data of the predicted path, its load profile and thus the emission of nitrogen oxides, the conversion of the nitrogen oxides and / or the demand for reducing agent to be determined and taken into account in the corrective direction for the determination of the solution of reducing agents or the influence of the instant and the duration of the catalyst loading and regeneration phase.