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The design of an automobile electromagnetic vibration cavitator created for the cavitation treatment of water-petrol fuel is described. Its use will allow not only saving fuel, but also increasing the completeness of combustion of the water-petrol fuel mixture; in other words, it will contribute to improving the environment. An experimental study of effectiveness of the fuel mixture cavitation treatment was carried out using A95 petrol and distilled water for automobile internal combustion engines. Cavitation treatment of the fuel mixture with a water-to-petrol ratio of 17 to 83% allows for an increase in the savings of expensive petrol by 15‒20% during the operation of engines on flat and downhill roads and in city traffic jams. At the same time, the engine power is reduced by only 6‒7% due to the cavitation treatment.
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