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1概况为了防止曲轴箱内的飞溅机油，以及流在轴颈上的机油渗透到柴油机外，在东风。型机车柴油机输出端设置了大油封。东风。系列入B、C型机车柴油机大油封结构完全相同，由曲轴轴颈上的挡油环与密封盖装配组成。所谓大油封漏油是指曲轴箱内的机油通过密封盖渗透到外面，一般情
1 Overview In order to prevent splashed oil in the crankcase, as well as the flow of oil on the journal infiltration to the diesel engine, in the east. Locomotive diesel engine output set a large oil seal. Dongfeng. Series into the B, C locomotive diesel engine oil seal structure is exactly the same, the crankshaft journal on the oil ring and seal assembly assembly. The so-called large oil seal leakage refers to the crankcase oil penetration through the sealing cap to the outside, the general situation