Method and computing unit for monitoring particle filter

A method and a computing unit for monitoring a particulate filter. The invention relates to a method (200) for operating a particle filter (130) downstream of an internal combustion engine (110), comprising: determining (220) an expected particle number concentration downstream of the particle filter (130), determining (210) an actual particle number concentration downstream of the particle filter (130), comparing (230) the actual particle number concentration with the expected particle number concentration, and determining (230) the particle number concentration downstream of the particle filter (130). And performing a measure (240) as a function of the result of the comparison. The invention further relates to a computing unit (140) and to a computer program product for carrying out such a method (200). 用于监视颗粒过滤器的方法和计算单元。本发明涉及一种用于运行内燃机（110）下游的颗粒过滤器（130）的方法（200），包括：确定（220）所述颗粒过滤器（130）下游的预期颗粒数量浓度，确定（210）所述颗粒过滤器（130）下游的实际颗粒数量浓度，将所述实际颗粒数量浓度与所述预期颗粒数量浓度进行比较（230），以及根据所述比较的结果执行措施（240）。此外提出了用于执行这种方法（200）的计算单元（140）和计