A cylindrical sleeve that forms the inner wall of an engine cylinder, providing a wear-resistant surface for piston movement.
A precision-engineered cylindrical component that serves as the inner lining of an engine cylinder in internal combustion engines. It provides a durable, wear-resistant surface for piston rings to seal against, maintains cylinder geometry under thermal and mechanical stresses, and facilitates heat transfer from combustion gases to the cooling system. Liners are critical for engine longevity, performance, and emissions control.
诱因 → 失效模式 → 工程缓解
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Wet liners have direct contact with engine coolant for better heat transfer but require sealing at both ends. Dry liners are press-fitted into the engine block without coolant contact, offering simpler installation but potentially less efficient cooling.
Replacement depends on wear measurements. Typically, liners last 500,000-1,000,000 km in automotive applications or 10,000-20,000 operating hours in industrial engines. Replacement is needed when wear exceeds 0.1-0.15% of bore diameter or scoring/damage occurs.
Common causes include abrasive wear from contaminated oil, cavitation erosion from coolant-side pressure fluctuations, thermal cracking due to overheating, corrosion from acidic combustion byproducts, and improper installation leading to distortion.
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CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。
说明目标数量、应用场景、交期和关键技术要求，用于准备 RFQ 或供应商评估。