Control system for an internal combustion engine

A control system for an internal combustion engine having a plurality of cylinders and a rotatable crankshaft, each cylinder having an electronically actuatable intake valve, exhaust valve and fuel injector, comprising:

• sensing means for monitoring the rotation of the crankshaft and responsively producing a crankshaft pulsetrain;
• operator interface means for producing operator parameter signals, the operator parameter signals including one of a plurality of engine operating modes;
• coordinator means for receiving the crankshaft pulsetrain, responsively determining the speed of the engine and producing a signal representative of the determined engine speed;
• calculation means for receiving the operator parameter signals and the engine speed signal, responsively determining valve and injection events for each cylinder to responsively achieve the one engine operating mode, and producing signals representative of the determined valve and injection events, said calculation means including a matrix having values representative of safe engine operation and wherein said calculation means compares the valve event values with the values of the matrix;
• means for receiving the crankshaft pulsetrain, responsively determining the rotational position of the crankshaft, and producing digital signals indicative of the determined crankshaft position;
• and
• means for receiving the valve and injection event signals and the digital signals, and responsively delivering an event waveform signal to each of the electrically actuatable valves and fuel injectors at an appropriate rotational position of the crankshaft, the event waveform signals being representative of a voltage to be applied to the electrically actuatable valves and fuel injectors.