| 摘要 |
<p>To avoid combustion of unburnt fuel/air mixture in the catalyser (34) of an exhaust system (30) of an internal combustion engine (10), the temperature (T1 - T4) of the exhaust gases is measured in the individual exhaust elbows (46-52). The difference ΔT between each of these temperatures and their average TM is compared with a threshold ΔTO. In the event of a mis-fire in one of the engine cylinders, the threshold is exceeded for that cylinder and a signal is supplied by a respective comparator (66-72) to the main control (74) of the electronic fuel injection system to switch off the fuel supply to that cylinder. This prevents unburnt fuel from reaching the catalyser. The mis-fire also causes a pilot lamp (86) to light up.</p> |
