| 摘要 |
<p>The method of monitoring the exhaust gas handling system (115) for a motor vehicle internal combustion engine (100) involves feeding a reducing medium such as a urea-water mix into the exhaust. The mixture can be varied to determine if a signal from an exhaust gas sensor (177, 919-195) alters in response. The mixture can be changed in defined operating ranges. Claims include a vehicle exhaust monitoring circuit using the method.</p> |
