INTERNAL COMBUSTION ENGINE CYLINDER-PISTON GROUP RING SEAL Russian patent published in 2004 - IPC

FIELD: mechanical engineering; internal combustion engine.

SUBSTANCE: proposed device contains cylinder, piston with stepped groove on which L-shaped spacer rings are installed to form tight connection along piston axis by means of pressure nut and thrust ring. Self-aligning lower and upper sealing rings and intermediate multicoil springs made with preliminary axial and angular deformation are installed in spaces of L-section spacer rings. Channels are laid to end faces of lower sealing rings through L-section spacer rings uniformly over circumference. Radial channels are made in lower L-section spacer ring.

EFFECT: improved efficiency of sealing and lubrication of sealing surface, increased service life of cylinder-piston group.

1 dwg