SAFETY ARRANGEMENT FOR STARTING MOTOR IN INTERNAL COMBUSTION ENGINES

摘要

First pulses sequence has repetition rate varying as a function of engine speed. Each pulse is extended in time by a predetermined time interval. The so-extended pulses and the original pulses each applied at one input of an AND gate which furnishes an output when the interval between pulses of the pulse sequence is shorter than the predetermined time interval. Output of AND gate de-energizes starting motor. Starting motor also de-energized for a predetermined time period following de-energization. regardless of speed of engine.