車用渦旋增壓器與發(fā)動(dòng)機(jī)匹配特性研究.pdf

1、蘭州理工大學(xué)碩士學(xué)位論文車用渦旋增壓器與發(fā)動(dòng)機(jī)匹配特性研究姓名：紀(jì)民舉申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化工過程機(jī)械指導(dǎo)教師：李超20080420AbstractInordertoimprovethetransientcharacteristicsofgasolineengine1nthelight“tyvehicleincludingtnlckandbusrunninginChinesecities，thepaperdeeplydemonstr

2、atesthenecessaryandprobabilityoffixingscrollsuperchargertor1ightdutyvehicleoncity’sroadafteranalyzingandcomparingwlthVanoussuperchargingsystemsThepapertakesTU5JP／Knaturallyaspiratedengineastheexampleandre8earchesthenewmo

3、delmechanicalsuperchargingsystem——thescrollsuperchargingsystem’stheoryofmatchingofsuperchargeranden91neanddeslgnsthestructureofscr011superchargerFirstllntheperformanceofscr011superchargerisanalyzedAccordingtotheworkchara

4、cteristicsofscrollsuperchargerthethennodynamicsanddlathermancyareanalVzed，andtheenergyequation，constringentcycleoftheory，transtIerrlngheatoftheworkingchanberandbackpressurecaVityarediscussedAndthegeometrlccharacteristico

5、fscroUsuperchargerisanalyzed，includingthescr01lpronle，pr06leequation，theworkingchambervolume，VoIumeratioandpressureratlo，theleakagewirelengthThenthescrollsuperchargedVehicleengine’smechaniccharacterlstlc1sdiscussedandthe

6、calculationalmethodradial一pressureareestablishedofaxespressure，tangency—pressure，andSecolldlV，thematchingofsuperchargerandengineforscrollsuperchar91ngsvstemiscalculaedtheoreticallyTheappropriatesuperchargingdegreeandsome

7、par鋤etersofenginearechosenStudytheairnuxofengineintherangeotmedlumandlowspeedofengine，andthenanalyzetherelationofairnuxwithenginespeedOnthebaseofit，thepressureofsuperchargingandtheinlettemperaturearecalculatedandthenther

8、elationofpressureratiowithenginespeedandlnlettemperaturewithpressureratioisanalyzedInthelightoftheworkcharactenstlcsofscronsuperchargerandthebestmatchofsuperchargerandengine，thematchlngparametersaredecidedreason￡LblyThir

9、dly，accordingtothematchingparametersofscrollsuperchargeranden91ne，thestructureofscrollsuperchargerisdesignedThescrollformofsuper蛐arge1sselectedtogetmebestperformanceofsuperChargerSomefactorsoftheoperatlngprincipleofscrol