Operating combustion engine with exhaust gas feedback, exhaust gas analyzer and thrust cut-off involves controlling exhaust feedback valve depending on engine braking mode and catalyser temperature

摘要

The method involves starting the engine, achieving idling or partial load and controlling the valve normally, checking for engine braking mode and catalyser temperature above a defined value above a starting temperature, waiting a minimum time, checking again, fully opening the valve and holding open until engine braking mode ends and controlling the valve normally if engine braking mode has ended or defined catalyser temperature is not reached. The method involves starting the engine (1), achieving idling or partial load and controlling the exhaust feedback valve normally to a constant cross-section depending on engine parameters (2), checking if the engine is in engine braking mode and the catalyser temperature is greater than a defined value above the starting temperature (3), waiting a minimum time (4), checking again (5), fully opening the exhaust valve and holding open (6) until engine braking mode ends (7) and controlling the valve normally if engine braking mode is finished or the defined catalyser temperature has not been reached (8).