METHOD PERTAINING TO AN SCR SYSTEM AND AN SCR SYSTEM

摘要

For an SCR system for a motor vehicle (100; 110), the vehicle including a feed device (230) to feed reducing agent from a container (205) to a dosing unit (250) for supply of reducing agent to an exhaust duct of the vehicle (100; 110); a method of controlling the dosage of the dosing unit (250) by a pressure (Pr) at which reducing agent is dosed, and/or controlling pressure (Pr) of a rotation speed (RPM) of the feed device (230). Also a computer program product with program code (P) for a computer (200; 210) for implementing the method. Also an SCR system and a motor vehicle (100, 110) equipped with the SCR system.

主权项

1. A method pertaining to an SCR system for a motor vehicle comprising
an engine having an exhaust duct; a feed device configured to feed a reducing agent from a container to a dosing unit for supply of the reducing agent to the exhaust duct of the vehicle, the feed device being rotatable in a path of the reducing agent to the dosing unit, the rotation being at a controllable rotation speed; the method comprising, controlling a dosage of the reducing agent supplied by the dosing unit by controlling a pressure (Pr) at which the reducing agent is dosed, and controlling the pressure (Pr) by control of the rotation speed of the feed device.