An apparatus for digital - electronic control of the inlet -, outlet - and injection valves as well as the ignition in the case of internal combustion engines

摘要

A system for the digital-electronic control of the inlet-, exhaust and possibly injection valves as well as of the ignition of internal combustion engines, especially of motor vehicle internal combustion engines, in which the valves are electromagnetically actuated and the respective crankshaft position is adapted to be detected digitally; a fixed value memory or storage device is provided in which at least for one cylinder the opening and closing instants of the inlet, exhaust, and possibly of the injection valves and/or of the ignition instants are at least partly adapted to be stored and selected as digital values coordinated to the respective operating conditions and corresponding to a predetermined crankshaft position in the form of data sets; a storage register is provided for each stored value of a data set to which this stored value is adapted to be transferred; a pulse comparison unit is also provided for each value of a data set in which the value either stored in the storage register or fixedly predetermined is adapted to be compared with the respective crankshaft position and from which, in case of agreement of the two values, a commencing pulse is adapted to be produced; a follower pulse generator is additionally provided at least for each value of a data set in which, beginning and together with the commencing pulse, a number of pulses corresponding to the number of cylinders, uniformly distributed over 720 DEG of the crankshaft, is adapted to be produced and is adapted to be fed to the valve-actuating group and/or ignition device of the associated cylinders in a sequence corresponding to the ignition sequence.