| 摘要 |
The invention relates to a method pertaining to SCR systems for a motor vehicle (100; 110), comprising a feed device (230) to feed reducing agent from a container (205) to a dosing unit (250) for supply of said reducing agent to an exhaust duct of the vehicle (100; 110). The method comprises the step of controlling the dosage of the dosing unit (250) by means of a pressure (Pr) at which reducing agent is dosed, which pressure (Pr) is controlled by control of a rotation speed (RPM) of said feed device (230). The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to an SCR system and a motor vehicle (100, 110) equipped with the SCR system. |
