Engine system utilizing modal weighted engine optimization

A method of optimizing an operation of an engine, comprising:

• receiving, from a sensor, a sensor signal indicative of an amount of power generated by the engine;
• receiving, from a speed sensor, a speed signal indicative of a speed of the engine;
• generating, using a controller, an operating histogram based on the sensor signal and the speed signal, the operating histogram;
• defining modal points for the engine, the modal points having associated emissions limits, each modal point including the speed of the engine and an amount of output power of the engine corresponding to the speed;
• selecting a subset of modal points;
• determining weights for the subset of modal points based on the operating histogram;
• assigning predetermined weights to the modal points not included in the subset;
• generating a calibration parameter set for the operating histogram based on the determined weights and the predetermined weights;
• applying the calibration parameter set to the engine.

An engine, comprising:

• a crankshaft;
• a combustion chamber;
• a fuel injector configured to inject fuel into the combustion chamber;
• a piston disposed reciprocatingly within the combustion chamber, the piston being configured to rotate the crankshaft;
• a sensor configured to generate a sensor signal indicative of power output by the engine;
• a speed sensor configured to generate a speed signal indicative of a speed of the engine;
• and
• a controller configured to:
• receive the sensor signal and the speed signal;
• generate an operating histogram based on the sensor signal and the speed signal;
• receive modal points for the engine, the modal points having associated emissions limits, each modal point including the speed of the engine and an amount of output power of the engine corresponding to the speed;
• select a subset of modal points;
• determine weights for the subset of modal points based on the operating histogram;
• assign predetermined weights to the modal points not included in the subset;
• generate a calibration parameter set for the operating histogram based on the determined weights and the predetermined weights;
• and
• apply the calibration parameter set to the engine.