FIELD: mechanical engineering; internal combustion engine fuel system. SUBSTANCE: gas injection system has compressed gas source 1 with charging device 2 furnished with high pressure gauge 3, gas charging union 4 and gas service union 5 made en-bloc and communicating through high pressure pipeline 6 provided with compensator 7 with gas pressure regulator 8 furnished with electromagnetic valve 9 and starting valve 10. Gas pressure regulator 11 is placed in communication through low pressure pipeline 12 with electromagnetic nozzle 13 placed before throttle valve 14. Gas pressure regulator 11 communicates from other side with behind-the-throttle space 16 of mixer-carburetor 17 through control pipeline 15. Kind-of-fuel selector 18 is coupled by electric circuit with ignition coil 19, electromagnetic gasoline valve 20 communicating through gasoline pipe 21 with float chamber 22 of mixer-carburetor 17. Fuel feed and ignition control microprocessor unit 23 is coupled by electric circuit with air flow transducer 24 placed in intake branch pipe 25 before air filter 28 through functional converter 27. EFFECT: increased response and enhanced reliability of central gas injection system. 3 cl, 7 dwg
