| 摘要 |
<p>Method for fault detection in an exhaust system (3). By analysis of the temperature increase in the exhaust gases which is generated by fuel injected by a fuel injection device (20) upstream of a fuel oxidation device (5), and by analysis of the NOx conversion which is generated by reducing agent injected by a reducing agent injection device (30) upstream of an SCR catalyst (7), the method determines whether there is in the exhaust system an exhaust mass flow error due to exhaust leakage in the exhaust line (4) upstream of the fuel and reducing agent injection points (8,13) or to incorrectly determined value for the mass flow of the exhaust gases which are received by the exhaust line from a combustion engine (1).</p> |
