为什么要过滤：机油在发动机工作中，起着润滑、清洗、冷却、密封等重要作用。机油在使用过程中其理化性能会发生变化，它直接影响发动机的工作状态。为了位机油更好地发挥作用，必须设置过滤装E,对随发动机运降而受到污染的机油，进行有效的过滤。并须采用简便、灵活的检测手段，对使用中机油的理化性能，进行及时的现场检验合理地确定机油的更换时间，或者采取适当的补救措施以延长机油在发动机中的使用时间。
过滤的原理：使油流经过多孔隙可透性介质，油中的颗粒物被介质阻挡，油镀透过介质（滤材）而得到净化。其机理是：较大的颗粒被拦截在介质的孔口外或介质内部通道缩口处，较小的颗粒则在表面力、静电力、分子吸附力的作用下吸附在介质的通道内壁或纤维介质的纤维表面上。
过滤介质按结构分为表面过滤型和深层过滤型。表面型的有金属网式、线隙式和片式过滤元件。深层型的有纸质、非织品纤维、多孔性挠结制品。
Why filter: Oil in engine work, plays lubrication, cleaning, cooling, sealing an important role. The oil in the course of its physical and chemical properties will change, it directly affects the working condition of the engine. Bit better play the role of oil, you must set the filter installed E oil contaminated with the engine running down effective filtration. And requires the use of a simple, flexible means of detection of the physical and chemical properties of oil use, timely on-site inspection to determine the replacement time of oil, or to take appropriate remedial measures to extend the time of the use of oil in the engine.
Filtration principle: the oil flows through the excessive porosity to the permeable medium, the oil particles are dielectric barrier, oil-plated through the medium (medium) obtained by purification. The mechanism is: the larger particles was blocked outside the orifice of the medium or medium internal channel at the necking, smaller particles adsorbed on the inner wall of the channel of the medium or a fibrous medium in the role of surface forces, electrostatic, molecular adsorption force the fiber surface.
The filter media structure is divided into the surface of the filter type and depth filtration type. Surface with metal mesh type, line-gap, and on-chip filter components. With deep-layer type of paper, non-fabric fibers, porous flexible Results products. |
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