Calibration system and method for fuel injection calibration

A calibration system for a plurality of fuel injectors of an engine, comprising:

• a controller configured to:
• select a first fuel injector of the plurality of fuel injectors;
• adjust operation of the first fuel injector;
• adjust operation of the engine to provide a power output based on adjusting the operation of the first fuel injector;
• determine a first actual engine power output of the engine responsive to adjusting the operation of the first fuel injector and the operation of the engine;
• and
• adjust a first commanded injector fuel rate of the first fuel injector based on a difference between the first actual engine power output and a target load of the engine.

A method of calibrating fuel injection for a system including an engine, the method comprising:

• operating the engine at a target load;
• operating a plurality of fuel injectors of the engine;
• turning off a first fuel injector of the plurality of fuel injectors;
• compensating for a drop in engine power caused by turning off the first fuel injector by using power from a battery;
• measuring the drop in engine power caused by turning off the first fuel injector;
• and
• repeating the preceding operations for each of the plurality of fuel injectors.