Optimization Of The Labyrinth Oil And Gas Separator In A Gasoline Engine Cylinder Cover

In this study,the design of labyrinth oil-gas separation in the cylinder head cover of a 1.5L gasoline engine is unreasonable,which leads to the excessive consumption of engine oil.The labyrinth oil-gas separation structure in the cylinder head cover is re-optimized,and the gas flow distribution and pressure loss are analyzed by numerical simulation to further optimize the design.Finally,the engine bench test validates the simulation results and the optimized design scheme.By optimizing the structure of oil separator,the oil-gas separation efficiency is improved.Firstly,the material of cylinder head cover is changed to plastic analysis,then the gas-liquid two-phase flow field of labyrinth oil-gas separator in cylinder head cover is simulated by numerical simulation,and the gas flow distribution and pressure loss of labyrinth oil-gas separator in cylinder head cover with two different optimized structures are analyzed.At the same time,the discrete model model is used.The separation efficiency of oil droplets with different diameters is obtained by simulating the trajectory of oil droplets.Finally,according to the comparison of simulation results,the optimal design scheme is selected;and the data engineering,RP sample making,tooling sample and PCV valve are optimized.The separation efficiency of oil-gas separator is calculated by numerical simulation through engine bench test.The reliability of rate theory results.After optimization,the separation efficiency of labyrinth oil-gas separation has been significantly improved to achieve the goal of final product optimization.At the same time,based on the comparison of simulation calculation and test results,the corresponding optimization and design directions are proposed.