Patent ID: 7310574

Claim:
An architecture of an ignition management system for an internal combustion engine, adapted to cooperate with an electronic engine control unit, the architecture comprising: a first module structured to process electric signals from which an angular position of an engine drive shaft can be obtained; a second module structured to process electric signals from which a cycle phase of the engine can be obtained; a third module structured to supply suitable signals for driving injectors so as to actuate a desired injection profile stored inside the third module, in a manner that injections during a same operating phase of the engine are increased and are based at least in part on said angular position of the drive shaft; and a fourth module structured to receive signals from the first and second modules and from the fourth module itself, wherein the first module receives an input signal from a sensor of a phonic wheel made rotatively rigid with respect to the engine drive shaft, and wherein the phonic wheel has a number of equidistant teeth arranged on a circumference, a small group of adjoining teeth being missing to define a reference point on the wheel detectable by the sensor.