Research On Wear Of The Cylinder Caused By Two-stroke Engine Lubircating Oil

Two-stroke engines have a wide range of applications in many fields because of theirrelatively high specific power output, better dynamic performance and lightweight advantages.However, the not fully burn lubricating oil in the mixture can be formed into combustionchamber deposits when the engine is operating. This will directly aggravate the wear of thecylinder, thus affecting its stability, service life, reliability and economy. Therefore, it isnecessary to research on the wear characteristics caused by the lubricating oil.This experiment was mainly divided into two parts of simulation experiment and realmachine experiments. The simulation experiment used the reciprocating motion simulatingdevice and a three-dimensional type surface roughness tester to come to a conclusion of therelationship between lubricating oil supplied quantity and the friction coefficient and wearvolume. With the real machine experiments, by using the remodeled two-stroke engine realmachine, differential thermal analysis and automatic balance roundness measuring instrumentand other laboratory equipment obtained the variation between oil film viscosity andtemperature at the time of changing temperature; by TG-DTA experiments to analyze andpresume the relationship between the characteristics of lubricant film attached to the surfaceof the cylinder and its wear characteristics from its thermal characteristics. Meanwhiledetermining the wear condition in the sliding and circumferential direction by using theautomatic roundness measuring machine to obtain the changes on the shape of a cylinder aftera long time operation and thus explore its wear and abrasion characteristics.