Taking DF4B locomotive as an example, this paper analyses the reason of too low lubricating oil pressure in running diesel engine, and gives countermeasures for it.
以DF 4 B型机车为例，系统地分析了造成柴油机机油压力低的原因，并提出其判断方法和对策。
Finally a newly developed special running in oil is introduced, which aims to shorten the running in period and to guarantee the whole engine running in quality at the same time.
为了合理地缩短柴油机磨合时间，同时又提高柴油机的整机磨合质量，研制了新配方的专用柴油机磨合油。
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