新型植物油發(fā)動(dòng)機(jī)的試驗(yàn)和應(yīng)用研究.pdf

1、南京理工大學(xué)碩士學(xué)位論文新型植物油發(fā)動(dòng)機(jī)的試驗(yàn)和應(yīng)用研究姓名：徐霞琴申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：機(jī)械工程指導(dǎo)教師：李東波20080501摘要AbstractMoreandmoreattentionsarepaiedtotheresearchandutilizationofalternativefuelsofinternalcombustionenginebecauseoftheincreasingpriceandthedryingupoft

2、hecrudeoilVegetableoilisakindofregenerativealternativefuelwhichhasgoodprospectforusingindieselengineTheexperimentstoinvestigatethecombustionandemissioncharacteristicsonanYZ4102turbochargedintercoolingdirectinjectiondiese

3、lenginewhichisfuelledwithdieselandvegetableoilrespectivelyTheheatreleaseratemodelwhichWasestablishedbasedonzero—dimensionmodelWassimulatedbysolrare—MATLABTheresultsoftheexperimentandsimulationshowedthattheenginerunningwi

4、thvegetableoilanddieselhasalmostsamepowerperformanceandtheemissionsofthetwofuelsaresimilarexceptunderthelowerspeedandloadconditionwhentheemissionsofvegetableoilaremorethandieselComparedwithdieselfuel，theignitiontimeandig

5、nitiondelayofvegetableisdelayedandprolongedwhichresultinthehighercylinderpeakpressureunderhighloadconditionBasedontheresultsoftheexperimentandsimulation，theYZ485QBdirectinjectiondieselenginewasimprovedbytheuseofthetechno

6、logyoftheELSBETTcorporationinGermanyTheinjectionpressureWasincreasedfrom190MPato220MPaandaheatexchangerwasinstalledonthetopoftheevaporationcoolertoheatthevegetableoilThen100hoursdurabilitytestoftheengineWasmadeTheresults

7、howedthatthedieselengineCanrunnormallybecauseofthereductionoftheviscosityofvegetableoilandtheperformanceofthedieselenginehasnotbecomeworseafterdurabilitytestButtherearemorecarbondepositsoncombustionchambersurface(suchasv

8、alves，cylinderheadandpiston)Finally，thedieselengineusingvegetableoilWasimprovedfarther，theitWasappliedtotheautomobileAndtheresultshowedthattheperformanceoftheautomobilewaswonderfullKeywords：dieselengine，vegetableoil，heat