DEVICE FOR CHARGING ENERGY ACCUMULATORS FOR CAPACITOR TYPE STARTING SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 2003 - IPC

FIELD: mechanical engineering; electric starting of internal combustion engines. SUBSTANCE: proposed charging device contains supply source and output filter, minus bus of supply source being connected with second output of filter. Device includes also diode, inductance coil, pulse diode, power switch, driver, AND-NOT circuit, output voltage comparator, inducting circuit, inductance coil voltage polarity comparator, gated voltage comparator, single-shot multivibrator, trigger, initial setting circuit, parametric stabilizer. First output of parametric stabilizer, second input of inductance oil voltage polarity comparator first output of inductance coil and anode of diode are connected to plus bus of supply source. Second output of inductance coil is coupled with pulse diode anode, drain of power switch and first inputs of inductance coil voltage polarity comparator and gated voltage comparator whose outputs are connected with starting input of single-shot multivibrator. Second input of gated voltage comparator is coupled with output of parametric stabilizer. Cathodes of diode and pulse diode are connected with first output voltage comparator whose second input is coupled with output of parametric stabilizer. Output of single-shot multivibrator is coupled with complementing input of trigger whose inverted out is coupled with D input and gating input of gated voltage comparator. Output of parametric stabilizer is connected with S input of trigger through initial setting circuit. Direct output of trigger is connected to first input of AND-NOT circuit. Output of output voltage comparator is connected through indicating circuit with second input of AND-NOT circuit. Output of trigger is connected to first input of AND-NOT circuit. Output of comparator of output voltage is connected with second input of AND-NOT circuit through indicating circuit whose output is connected with power switch control input through driver. Minus outputs of parametric stabilizer, gated voltage comparator, output voltage comparator, indicating circuit, inductance coil voltage polarity comparator, single-shot multivibrator, trigger, power switch driver. AND-NOT circuit and also R input of trigger are connected to minus bus of supply source. EFFECT: improved characteristics of electric starting system, provision of protection of output stage from pulse current overloads, possibility of operation of energy accumulator together with supply source at starting of internal combustion engine. 1 dwg