Cylinder sealing device for internal combustion engine

• Main Authors: QIU DEQUAN, QIU YUKUN
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

The invention provides an air cylinder sealing device for an internal combustion engine. The air cylinder sealing device comprises a cylinder cover, a cylinder sleeve arranged on the cylinder cover and a piston body located in the cylinder sleeve, and a plurality of annular grooves are formed in the piston body; a mother high-pressure ring, a son high-pressure ring, a mother oil ring and a son oil ring which are matched with one another are arranged on each ring groove, the mother high-pressure rings and the son high-pressure rings form the mother-son high-pressure rings, and the mother oil rings and the son oil rings form the mother-son oil rings. The technical problems that in the prior art, piston rings are prone to relative displacement, and air leakage occurs are solved. 本发明提供了一种内燃机用气缸密封装置，包括：缸盖、设于所述缸盖上的缸套，以及位于所述缸套内的活塞本体，所述活塞本体上具有多个环槽；各所述环槽上设有相适配的母高压环、子高压环、母油环和子油环，所述母高压环与所述子高压环形成子母高压环，所述母油环与所述子油环形成子母油环。本发明解决了现有技术中活塞环易发生相对位移、出现漏气的技术问题。