Piston ring for internal combustion engine

• Main Authors: YU SHOUZHEN, GAO YUANXU, ZHANG JIREN
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2021
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

The invention discloses a piston ring for an internal combustion engine. The piston ring comprises a piston ring body and is characterized in that the open end of the piston ring body is provided with an airflow sealing structure for sealing the gap of the open end, the airflow sealing structure comprises a protrusion integrated with one end part of the open end of the piston ring body, and the other end part of the open end of the piston ring body is provided with a clamping groove into which the protrusion is clamped. Through the design of the airflow sealing structure at the open end, the sealing performance of the piston ring is greatly improved, the blow-by amount is reduced, the diesel engine efficiency is improved, the engine oil consumption is reduced, and the engine life is prolonged. 本发明公开了一种内燃机用活塞环，包括活塞环本体，其特征是：在活塞环本体的开口端，设置将开口端间隙密封的气流密封结构；所述气流密封结构包括与活塞环本体开口端中的一端一体的突体，活塞环本体开口端中的另一端设有与所述突体卡合的卡槽。本发明通过开口端气流密封结构设计，大大提升活塞环密封性能，降低窜气量，提升柴油机效率，降低机油消耗，提高发动机寿命。