FIELD: machine building.
SUBSTANCE: invention relates to combustion chamber with wall (5) arranged radially inside casing (6), spark plug (3) to ignite fuel-air mix arranged on casing (6) and containing casing (2) with its free end (3a) mounted, with a notable gap to compensate for relative travel between casing (6) and combustion chamber wall (5), in hole (8) furnished in wall (5). The said chamber incorporates sealing device (1) provided in the space between casing (2) and edges (8a) of hole (8), the said sealing device being furnished with annular guide (10) for spark plug passing casing (2) sliding radially on outside end of annular support (12), with its base rigidly coupled with edges (8a) of the hole on the said combustion chamber. The novelty of this invention consists in that support (12) is rigidly coupled with outer radial part of pipe (20) passing through hole (8) and furnished with flange (21) arranged on the said support inner radial end and resting against the inner surface of combustion chamber wall (5), and in that cooling circuit (23, 33, 52) is provided for flange (21).
EFFECT: attachment of the spark plug guide base despite the incompatible materials of mating surfaces and different thermal expansion factors.
9 cl, 3 dwg
