Detonation detection

A method of identifying detonation of an engine having a plurality of cylinders, comprising:

• receiving a plurality of vibration signals each associated with one of the plurality of cylinders;
• receiving a plurality of temperature signals each associated with one of plurality of cylinders;
• generating a plurality of filtered vibration signals each corresponding to one of the plurality of vibration signals;
• generating a plurality of filtered temperature signals each corresponding to one of the plurality of temperature signals;
• periodically or continually comparing each of the filtered vibration signals to a vibration threshold;
• periodically or continually comparing each of the filtered temperature signals to a temperature threshold;
• if any of the filtered vibration signals associated with one of the plurality of cylinders exceed the vibration threshold and a filtered temperature signal associated with the one of the plurality of cylinders exceeds the temperature threshold, monitoring an elapsed time that both the filtered vibration signal and the filtered temperature signal exceed their respective thresholds;
• and
• if the elapsed time exceeds a threshold anomaly time, identifying a detonation event.

A system for identifying detonation within a cylinder of an engine, the system comprising:

• a vibration sensor arranged on an engine block of the engine and configured to generate a vibration signal associated with the cylinder;
• a temperature sensor arranged at an exhaust port of the cylinder and configured to generate a temperature signal of the exhaust gas temperature associated with the cylinder;
• and
• a computing device in data communication with the vibration sensor and the temperature sensor and comprising:
• a processor;
• and
• a computer readable storage medium having computer implemented instructions stored thereon and performable by the processor for:
• receiving the vibration signal;
• receiving the temperature signal;
• periodically or continually comparing the vibration signal to a vibration threshold;
• periodically or continually comparing the temperature signal to a temperature threshold;
• if vibration signal exceed the vibration threshold and the temperature signal exceeds the temperature threshold, monitoring an elapsed time that both the vibration signal and the temperature signal exceed their respective thresholds;
• and
• if the elapsed time exceeds a threshold anomaly time, identifying a detonation event.