FIELD: machine building.
SUBSTANCE: working cylinder consists of sleeve and piston with piston rings interacting with internal surface of sleeve. In the invention internal surface of the sleeve has guiding projections formed with modified material of a surface layer of higher specific volume on surface sections arranged in form of a multi-turn spiral and with capillary structure between spirals of guiding projections. According to the invention there is made effective hydraulic radius of capillaries in structure within the ranges (1.3-3.5) of height of guiding projections.
EFFECT: reduced friction and wear.
1 dwg
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|---|---|---|---|
| PISTON FOR INTERNAL COMBUSTION ENGINE | 1995 |
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SU661180A1 |
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|
RU2534761C2 |
