FIELD: engines and pumps.
SUBSTANCE: rotary machine comprises cylindrical housing 1 with inlet 2 and outlet 3 to accommodate cylindrical vaned rotor 4 and rollers 6 with recesses 7 articulated therewith to make rotor vanes interact alternately with vanes 5 via said recesses and divide chamber between housing 1 and rotor 4 into larger and smaller annular chambers 8 and 9. The latter are communicated via over bypass channel 10. Central angle between inlet and outlet 11 and 12 does nor exceed central angle between vanes 5. Central angle between housing inlet 2 inlet 11 of channel 10 equal, at least, the difference between central angle between vanes 5 and angular width of vane tip.
EFFECT: higher efficiency, decreased consumption of fuel.
4 cl, 6 dwg
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