發(fā)動(dòng)機(jī)碳煙對(duì)潤(rùn)滑油摩擦磨損特性的影響.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文發(fā)動(dòng)機(jī)碳煙對(duì)潤(rùn)滑油摩擦磨損特性的影響姓名：方凌申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：胡獻(xiàn)國(guó)201204EffectofEngineSootontheWearandFrictionPerformancesofLubricatingOilABSTRACTInrecentyears，dieselenginemanufacturershadtoadoptnewenginetechnology、析tllstric

2、tregulationreleasing，suchaselectriccommonrail，wastegascirculation(EGR)systemandSOonTheapplicationofthesetechnologyproducedmoresootparticlesduringdieselengineoperationAlthoughmoresootwasdischargedthroughtheengineexhaustpi

3、pe，buthighercontentsofsootstillremainedindieselengineoilThroughthedieselenginecombustionprocess，apartofsootparticleswereexpelledfromtheatmosphereaftergenerated，theotherpartwereabsorptintheengineoilRelevantliteraturepoint

4、edoutthattheoilcontainingsootwillgenerateobviousweal“intheengineInthisthesistheeffectofsootontheantifrictionandantiwearpropertyofdifferentlubricationandweal“mechanismwereexplored，tounderstandtheenginesootinternalareatohe

5、lppredictthewearmodeldevelopmentoffutureenginefrictionpartsdesign(1)Sootdecreasedantifrictionpropertyof328oilSootWaseasytoagglomeratewithoutdispersanttoblocktheoilflowtoincreaseoilshearforce，frictioncoefficientrosefrom00

6、55to0075Theinfluenceofthesootamountsontheantiwearpropertyof324oilWasdependentontheloadchangeWhenloadwas100200N，theinfluenceWasminimumWhentheamountofsootwasmorethan6％，(147N，1450rpm)wearofthesteelballdiameter(WSD)variation

7、WasnolongerobviousUsingscanningelectronmicroscope(SEM)thesteelballsurfacemorphologywasobservedWiderravinesintheballsurfacethataddedcarbonblackWasviewedLocalareashadgellingsigns，andcarbonblacksubsidenceintheravineswasfoun

8、d(2)Sootimpactedontheantifrictionof15W／40CDoilveryseriouslyAlong砸t11carbonblackcontentsincreased，theWSDof15W／40CDoilhadascendingtendency，butthefrictioncoefficientchangewasnotobviousTheeffectofsootontheantifrictionandanti

9、wearpropertyoflubricationWasrelatedtothephy’sicalandchemicalpropertiesoftheoilitselfandtheadditivesEnergyDispersiveSpectrometer(EDS)observedthatcarbonblackhinderedtheformationofboundaryfilmsTheexperimentalresultsshowedth