PISTON MANUFACTURING METHOD Russian patent published in 2005 - IPC

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: according to proposed method of manufacture of piston, insert is preliminarily made with ring groove for split seal and then insert is connected with piston. Said insert is made of at least two parts, on one of which sealed plane of groove is made in contact with plane of seal. Prior to connecting parts of insert, solid ring is fitted between parts is ring groove and then insert is connected with piston. Use of solid ring precludes passing of combustion products into ring space in groove behind the seal. So, use of solid ring in sealing system of piston machine provides considerable reduction of mechanical losses in cylinder-piston pair, and proposed method of manufacture by simple operations and means makes it possible to install solid ring in ring groove of piston which, in its turn, solves problems in piston machines associated with considerable mechanical posses in cylinder-piston pair.

EFFECT: reduced mechanical losses, improved reliability of engine.

12 cl, 6 dwg