润滑油为何会变质

• 出 处: 摩托车技术
• 发表日期: 2001年08期
• 关键词: 四冲程发动机 摩托车发动机 磨损过度 曲轴箱 缸套 不溶物 粘度变化 窜气 高负荷运转 深度氧化

即使发动机工作正常,随着时间的增长,装在二冲程或四冲程车变速箱与曲轴箱中的润滑油也会逐渐氧化变质,如油品粘度升高,酸值降低,不溶物增多等。 如摩托车发动机工作不正常,会出现汽油稀释,磨损过度.灰砂、水分进入,特别是四冲程发动机活塞环与缸套磨损过大而窜气到曲轴箱与变速箱,使油中汽油含量增多而变质等,这种植况,即使是高级润滑油也会变坏。

Even if the engine is working properly, as time goes by, lubricating oil in two-stroke or four-stroke vehicle gearbox and crankcase will also gradually oxidative deterioration, such as oil viscosity increases, the acid value decreases, insoluble matter increased. Such as motorcycle engine is not working properly, there will be dilution of gasoline, excessive wear and tear. Sand, water into, especially the four-stroke engine piston ring and cylinder liner wear too much and channeling gas to the crankcase and gearbox, the gasoline content Increase and deterioration, etc., this implant, even high-grade lubricants will deteriorate.