高强化柴油机迷宫式油气分离器结构影响研究  

Effect of Labyrinth Oil-Gas Separator Structure for High-Intensified Diesel Engine

作　　者：苏鑫朋 景国玺 孙秀秀 于会超 赵伟程 文洋 SU Xinpeng;JING Guoxi;SUN Xiuxiu;YU Huichao;ZHAO Weicheng;WEN Yang(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300400,China;Tianjin Key laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Tianjin 300400,China;Hebei Huabei Diesel Engine Co.,Ltd.,Shijiazhuang 050081,China;China North Engine Research Institute(Tianjin),Tianjin 300406,China)

机构地区：[1]河北工业大学机械工程学院,天津300400 [2]天津市新能源汽车动力传动与安全技术重点实验室,天津300400 [3]河北华北柴油机有限责任公司,河北石家庄050081 [4]中国北方发动机研究所(天津),天津300406

出　　处：《车用发动机》2023年第5期57-62,共6页Vehicle Engine

摘　　要：迷宫式油气分离器是重型柴油机油气预分离的主要设备,其性能直接影响柴油机排放达标度。基于CFD仿真在高窜气量下研究了迷宫式油气分离器主要结构参数对压力损失和分离效率的影响规律,包括过滤孔孔径、过滤孔板间距和过滤孔数量,并基于发动机试验台架对不同油气分离器的压力损失和分离效率开展试验验证。结果表明:在高窜气量条件下,对于以交错孔板进行分离的迷宫式油气分离器,对压力损失影响最大的是过滤孔板孔径,对分离效率影响最大的是过滤孔数量;在迷宫式油气分离器设计时应重点关注孔板开孔率。The labyrinth oil-gas separator is the main equipment of oil and gas pre-separation for heavy-duty diesel engine that directly affects the legislation conformation of engine emission.Based on CFD simulation,the influence of the main structural parameters of labyrinth oil-gas separator including the pore size and spacing of filter orifice plate and number of filter orifice on pressure drop and separation efficiency were studied under the high blow-by gas conditions.Then the experiments were conducted to verify pressure drop and separation efficiency of different separators on the engine test bed.The results show that the greatest influence on the pressure drop and the separation efficiency under the high blow-by gas conditions is the pore size of filter orifice plate and the number of filter orifice respectively for the labyrinth oil-gas separator with the staggered orifice plate.Besides,it is found that the design of labyrinth oil-gas separator should focus on the opening rate of orifice plate.

关 键 词：油气分离器 重型柴油机 结构设计 分离效率 压力损失 

分 类 号：TK422.1[动力工程及工程热物理—动力机械及工程]