FIELD: engine building.
SUBSTANCE: disclosed are methods and systems for determining deterioration of the particulate filter state in the exhaust path. In one of the examples, the method may contain discharge of exhaust gases to a secondary flow unit containing a filter, and determination of deterioration of state on the basis of time intervals between next successive regenerations of the filter in the unit of the secondary flow.
EFFECT: disclosed are methods and systems for determining deterioration of the state of a particulate filter of an engine based on flow rate through a secondary vent assembly.
19 cl, 4 dwg
