FIELD: transport.
SUBSTANCE: invention relates to proportioning in SCR-system. Method relates to SCR-system and consists in the feed of liquid reducing agent to feeder (230) and, therefrom, to at least one point (250) of consumption from container (205). Method comprises the step feed pressure (P) developed by feeder (230) is continuously defined (s340). Besides, it comprises feeder operation control step (s360) on the basis of feed pressure (P) variations (P') to decrease the influence of undesirable air feed in feeder (230). Besides, invention relates to SCR-system and vehicle equipped with such SCR-system. Also it relates to machine-readable carrier wherein stored is the computer program related to SCR-system.
EFFECT: decreased undesirable emissions in SCR-system.
21 cl, 7 dwg
