繁體:缸套(氣缸套)
精密加工的圆柱形部件,用作内燃机气缸的内衬。
一种精密加工的圆柱形部件,用作内燃机气缸的内衬。它为活塞环提供耐用、耐磨的密封表面,在热应力和机械应力下保持气缸几何形状,并促进热量从燃烧气体传递到冷却系统。缸套对发动机的寿命、性能和排放控制至关重要。 缸套形成一个精密珩磨的圆柱孔,活塞在其中往复运动。在发动机运行期间,它承受高温(高达300°C)、燃烧压力(柴油发动机中高达200巴)以及活塞环产生的摩擦力。它将热量传递给发动机缸体/冷却系统,并通过受控膨胀保持尺寸稳定性。在湿式缸套中,它直接接触冷却液;在干式缸套中,它压配到缸体中。
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.
CNFX 是开放目录,不是交易平台或采购代理。工厂资料和表单用于帮助你准备直接沟通。
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。