FIELD: engines and pumps.
SUBSTANCE: primary air cleaner comprises air inlet and outlet, gauze filter to entrap dirt, outlet and inlet surfaces, jacket nearby gauze filter outlet surface, fan arranged in said jacket to force air through gauze filter pores, first and second cyclone filters. First cyclone filter has air inlet and outlet, and purge channel. Said air inlet is arranged nearby gauze filter outlet surface while purge channel communicates with jacket. Second cyclone filter has air inlet and outlet, and purge channel. Second cyclone filter air inlet communicates with first cyclone filter air outlet. Second cyclone filter air outlet communicates with ICE air inlet. Invention covers also ICE design and that of harvester.
EFFECT: improved air cleaning.
19 cl, 4 dwg
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