FIELD: machine building.
SUBSTANCE: cylinder group of two-stroke internal combustion engine includes crankcase (1), block head (2), check valve (11), outlet valve (3), cylinder with longitudinal and semi-annular grooves and lower removable cover. Sleeve with a groove along the outer diameter is added, which connects the lower and upper slots. Sleeve itself is made complete with a removable cover fixed by conical pins. In the cover there are annular grooves along the outer diameter for installation of O-rings. In place of cover adjoining to piston rod (5) there is a recess for installation of sets of inserts with O-rings, which are fixed in the cover by a locking ring.
EFFECT: simplified manufacturing.
1 cl, 5 dwg
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