Governor system for internal combustion engines

Governor system for an internal combustion engine (E) having means (T,1) providing electrical pulses in synchronism with rotation of the engine and having a recurrence rate dependent on speed and a time duration independent of speed;

• integrating means (3) integrating said pulses and deriving an integrated signal representative of speed;
• a pulsed reference level voltage generator means (5) connected and controlled to provide a pulse reference signal having a reference level and being pulsed in synchronism with rotation of the engine;
• evaluation means (4) controlled by the pulsed reference signal and evaluating said integrated signals with respect to said pulsed reference signal to determine whether the integrated signal, and hence the speed of the engine, exceeds a predetermined level, and
• a timing circuit (6) connected to and controlled by said evaluation means (4) and providing a control signal the initiation of which is synchronized with the pulsed reference signal and hence with rotation of the engine for a predetermined time interval to inhibit fuel combustion in the engine for said predetermined time interval if said predetermined level is exceeded.