车用柴油机油气分离器分离特性试验研究

车用发动机 ›› 2025, Vol. 0 ›› Issue (4) : 10-14.

车用柴油机油气分离器分离特性试验研究

孙秀秀^1,2，郑贺^1,2，景国玺^1,2，胡茂爽^1,2，于会超^3,4,5，董长龙^3,4,5

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Experimental Study on Separation Performance of Oil-Gas Separator for Vehicle Diesel Engine

SUN Xiuxiu^1,²,ZHENG He1^,2,JING Guoxi^1,²,HU Maoshuang^1,2,YU Huichao^3,4,5,DONG Changlong^3,4,5

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摘要

为探究主动油气分离器、复式油气分离器和迷宫式油气分离器的性能，进行了压力损失和分离效率试验。通过搭建油气分离器试验台，研究了3种类型油气分离器在不同边界条件下压力损失和分离效率特性。试验结果表明：窜气量越大压力损失越大，与油气分离器类型无关，主动式油气分离器压力损失最低；且在不同窜气量、机油温度以及气泵压力下，主动式油气分离器分离效率最高，迷宫式油气分离器效率最低。转速为12 000 r/min、窜气量为180 L/min时，主动离心式油气分离器分离效率为98.82%，迷宫式油气分离器分离效率为66.30%，复式油气分离器分离效率为87.34%。窜气量小于100 L/min或油滴粒径较小时，主动式油气分离器分离效率低于90%。研究成果为油气分离器性能研究及优化设计提供方向。

Abstract

To evaluate the performance of active, compound, and labyrinth oil-gas separators, tests were conducted to measure pressure loss and separation efficiency. By establishing an oil-gas separator test platform, the pressure loss and separation efficiency characteristics for three types of separators were studied under different boundary conditions. The experimental results show that greater blow-by of oil-gas mixture result in higher pressure loss regardless of the separator type, and the active oil-gas separator has the lowest pressure loss. Additionally, the active oil-gas separator demonstrates the highest separation efficiency under different blowby, oil temperatures and gas pump pressures, and the labyrinth oil-gas separator has the lowest efficiency. At the speed of 12 000 r/min and the blow-by of 180 L/min, the separation efficiency of active, labyrinth and compound separator is 98.82%, 66.30% and 87.34% respectively. The separation efficiency of active oil-gas separator is less than 90% when the blow-by of oil-gas mixture is less than 100 L/min or the particle size of oil droplets is small. The findings provide valuable insights for the performance evaluation and optimization of oil-gas separator designs.

导出引用

孙秀秀, 郑贺, 景国玺, 胡茂爽, 于会超, 董长龙. 车用柴油机油气分离器分离特性试验研究[J]. 车用发动机. 2025, 0(4): 10-14

SUN Xiuxiu, ZHENG He, JING Guoxi, HU Maoshuang, YU Huichao, DONG Changlong. Experimental Study on Separation Performance of Oil-Gas Separator for Vehicle Diesel Engine[J]. Vehicle Engine. 2025, 0(4): 10-14