FIELD: mechanical engineering; internal combustion engines. SUBSTANCE: to reduce consumption of antiknock dope, it is added in cyclone ultrasonic homogenizer to clear gasolines only at maximum engine loads, at crankshaft speed not exceeding 70% of maximum speed, by signals from knock pickup and electronic tachometer at moderate heating to 60-70 C, with mechanical mixing and ultrasonic dispersing over entire length of suction duct. Device has micronozzle and micrometer to deliver liquid antiknock dope in amount of 1-4 ml/kg of gasoline, and steel bottle, able to withstand gauge pressure of 5 MPa, with liquid antiknock dope at a pressure of compressed gas equal to 1 MPa, in the amount of 2/3rd bottle capacity. Bottom of cyclone ultrasonic homogenizer is formed by piezoceramic ultrasonic vibrator. EFFECT: reduced content of lead oxides in exhaust gases, possibility of using expensive and nontoxic antiknock dopes instead of tetraethyl lead. 3 cl, 4 dwg
