Electronic distribution and control device for the ignition of internal combustion engines, particularly for motor vehicles

An internal combustion engine having an electronic ignition distribution and control system, said system comprising detector means including a part rotatable by the engine and directly detecting fixed limit positions between which ignition must take place for each cylinder of the engine, said detector means generating respectively first and second output signals at said limit positions, a computer including an ignition advance system connected to said detector means to trigger said ignition advance system into operation whenever the first output signal is produced, said ignition advance system including delay determining means sensitive to at least one engine operating parameter to determine delay between triggering of said advance system and production of a spark producing output signal thereby, said advance system also including means for producing a spark producing signal independently of said delay determining means whenever the second output signal occurs before termination of the delay, at least one amplifier connected to said computer for amplifying the spark producing signal, a voltage step-up coil means having a primary connected to said amplifier and a secondary connected to at least one spark plug for producing a spark at said spark plug either after a delay determined by said at least one engine operating parameter following production of the first output signal, or upon production of the second output signal, whichever occurs first.