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江苏省武进县柴油机厂生产的五菱牌 S195柴油机,在其润滑系统中,增设了一个减压阀装置,装在柴油机的后盖上(见图)。减压阀装置的作用是,使润滑油油路中的机油压力保持在2～3.5公斤力/厘米~2之间。一方面以保证柴油机工作时,有足够的机油润滑;同时又不致因机油压力过高而导致机油泄漏和机油消耗的增加。
The Wuling S195 diesel engine produced by Wujin County Diesel Engine Factory in Jiangsu Province has an additional pressure reducing valve device installed in the back cover of the diesel engine in its lubrication system (see photo). The function of the pressure reducing valve device is to keep the oil pressure in the lubricating oil circuit between 2 and 3.5 kgf / cm. On the one hand to ensure that diesel engine work, there is sufficient oil lubrication; at the same time not because of the oil pressure is too high and lead to oil leakage and increased oil consumption.