摘要
发动机油被喻为发动机的"血液",对发动机的使用寿命至关重要.随着行驶里程的增加,发动机油的性能、理化参数会逐渐变化,影响发动机的相关性能.通过行车试验,获得了全合成汽油发动机油ACEA C3 5W-30在不同里程下的样品.通过对样品运动黏度、总碱值、低温泵送黏度、酸值、氧化度、硝化度、四球试验、元素分析等性能进行分析,得到了各理化性能随行驶里程的变化趋势,对油品的换油周期具有一定的指导意义.
Abstract
Engine oil is known as the"blood"of the engine and is crucial for the engine's lifespan.As the mileage increa-ses,the performance and physicochemical parameters of the engine oil gradually change,affecting the engine's related per-formance.Through driving experiments,samples of fully synthetic gasoline engine oil ACEA C3 5W-30 were obtained at different mileages.By analyzing the performance such as kinematic viscosity,TBN,MRV,acid value,oxidation value,ni-tration value,four-ball test,and elemental analysis of the samples,the changing trends of each physicochemical perform-ance with mileage were obtained,providing certain guidance for the oil change cycle.
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