SEBU9064 23 Features and Controls Overspeed NOTICE The Engine Monitoring System is not a guarantee against catastrophic failures. Programmed delays and derate schedules are designed to minimize false alarms and provide time for the operator to stop the engine. Oil pressure sensor Coolant temperature sensor Atmospheric pressure sensor (Barometric pressure sensor) Speed sensor The following parameters are monitored: Throttle actuator Coolant temperature Oil pressure Engine speed Atmospheric pressure (Barometric pressure) The coolant temperature, oil pressure, and the engine speed can trigger an engine shutdown. Atmospheric pressure (Barometric pressure) can trigger an engine de-rate.
The atmospheric pressure sensor (Barometric pressure sensor) can de-rate the engine. Operating the engine and increasing the altitude will de-rate the engine in accordance with emission regulations. The start of the de-rate will be determined by the flash file that is installed. i05336156 Overspeed 402F-05 3600 Revolutions Per Minute (RPM) 403F-07 3600 RPM 403F-11 3600 RPM 403F-15 3000 RPM The overspeed is plus 700 RPM above the given speed for engines shown. i05336173 Sensors and Electrical Components The following sensors or switches are installed on the 402F-05, 403F-07, 403F-11, and the 403F-15 engines: