| 摘要 |
<p>The method involves introducing a reagent medium into an exhaust gas region (13) of an internal-combustion engine. A continuous measuring valve (DDV), adjustable safety valve (FCV) and a check valve (HCIV) are arranged in a flow direction of the reagent medium. A reagent medium pressure (p) between the measuring valve and the safety valve is measured. The measured reagent medium pressure is compared with a threshold value (pLu, pAbg, PHCIV, PQ). An error signal (F) is provided if the measured reagent medium pressure exceeds the threshold value. Independent claims are also included for the following: (1) a device for diagnosing pressure in a reagent medium-measuring system (2) a computer program for performing a method of diagnosing pressure in a reagent medium-measuring system (3) a computer program product comprising a program code for performing a method of diagnosing pressure in a reagent medium-measuring system.</p> |
