坦克柴油机起动电流与气缸磨损状态关系分析与评价

Approach to Assess Tank Diesel Cylinder Wear By Analyzing Its Relation to Start Current

为了评价坦克柴油机的技术状态,研究了柴油机起动电流的测量方法,分析了起动电流波形与气缸磨损和气缸压力之间的内在关系,揭示了起动电流波动的本质。在某型坦克实车上测量了起动电流信号,并采用奇异点剔除、小波去噪方法对起动电流进行了预处理,提取了特征波形。按柴油机气缸工作顺序,分段计算了起动电流波形中各缸工作区段的上升段积分,提取了起动电机拖动活塞的压缩作功值作为评价参数,利用偏差法分析了柴油机各缸磨损不均衡度,并采用动态聚类算法确定了磨损不均衡度的评判标准对坦克柴油机气缸磨损进行评价。

In order to assess the technical state of tank diesel engine,a method for measuring the start current of diesel engine is designed,analyzed the relation between start current wave and cylinder wear as well as cylinder air pressure,explored the nature of start current fluctuation.Measured start current signals in experimentations on tank engine,made pretreatments by means of singular data elimination and wavelet analysis,and so that extracted the feature wave of the start current.Cut the current signal into divisions according to cylinder work order,calculated the integral of the upwards half in each division,made this compression work done by start motor as an assessment parameter to assess cylinder wear.By means of dynamic clustering algorithm determined an assessment standard to assess cylinder wear asymmetry of tank engine.