Diesel engine load governing using engine speed setpoint

This invention relates generally to controllers for internal combustion engines, and in particular to a controller for a compression ignition engine. A controller for, and method of, load governing a compression ignition engine. Various data is processed to develop fueling data for accomplishing governed fueling of the engine. The processing includes processing accelerator pedal position data corresponding to the position of an accelerator pedal and engine load data corresponding to the load on the engine to develop engine speed setpoint data according to a function generator containing engine speed setpoint data in correlation with accelerator pedal position data and engine load data to accomplish load governing of the engine in consequence of further processing of the developed engine speed setpoint data. The developed engine speed setpoint data and actual engine speed data are processed by a governor PID to develop the fueling data.