Research On Measurement Of Lubricant Oil Film On Piston Skirt Based On LIF

A piston is an important component of internal combustion engine, which directlyimpacts the reliability and durability of internal combustion engine. A piston skirt is animportant part of piston, and the guarantee of its functionality of piston skirt-cylinderliner friction pairs is affected directly by its working conditions. It is lubricated by oil toreduce the friction and wear between two moving surface. An appropriate film thicknessis a fatal factor to ensure pistons working normally. Now in our country the measuringmethods of film thickness often used are based on the electronic. However, somedisadvantages limit their application. Therefore, the method which uses LIF method tomeasure oil film thickness has lots of advantages in contrast to these traditional methods,and it is proved feasibility and accuracy in visualization research.In this paper, by comparing the latest measurement method, measurement platform,the research goal and the existing resources, select the LIF method for the measurementof experimental research. Then choose the right laser and dye, use optical fiber accesstype engine, high speed camera, computer and other components to build the platform.Then use the LIF method platform to do the research at two different engine conditionsand cylinder matching gap. Then collect the oil film thickness data, obtain the differentrules of oil film thickness in each condition. And finally find the reasons of why eachrule happens.By studying LIF measurement method, building experiment platform and doing theresearch of the lubricating oil film thickness on the piston skirt, new methods and ideashave been provided to the researcher who is devoted to the visualization research of thelubrication oil film on piston skirt.