高比例二甲醚和生物柴油混合燃料在直喷式柴油机上的试验分析

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1、太原理工大学硕士学位论文EXPERIMENTALSTUDYoFDIRECTINJECTIONDIESELENGINEOPERATEDONHIGHPROPORrrIoNDME—BIoDIESELBLENDSABSTRACTInrecentyears，theenvirmentalpollutionandshortageofpetroleumhavebecometheproblemoftheword．Atthesametime，theemissionsofvechelshavebecomemainpollution．Thereforethe

2、governmentattachesgreatimportancesonthecleanenergy’Sresearch．Dimethylether(DME)isoneoftheidealaltemativefuel．Itcanrealizecleancombustionwhenusedinthecars．ButDMEhaslowviscosity,andhigh-pressurefuelinjectionsystemeasilycauses》earlywearandleakage，resultingdualityofthelifeo

3、ftheplungersignificantdecline，whichrestrictsDMEinthecompression—ignitionengineapplications．Biodieselhashi曲viscosity,whichaddedlowpercentageofbiodieseltoDMEisconducivetoraisingtheviscosityofDME．SothistopicintroducedexperimentofhighproportionofDMEfueledwithlowproportionof

4、biodieselonZSl110TDdieselengine．Atthebeginning，thearticlesummedupthephysico—chemicalcharacteristicsofdimethyletherandbiodiesel．Thebio·dieseland0≠fdiesel’Sviscosityhavebeenmeasuredinthedifferenttemperature．Wheninthetemperatureof20。C，calculatingtheDB90andDB80viscosityofth

5、eblendedfuelare2．31mm2／sII1太原理工大学硕七学位论文and1．47mm2／S．ItishigherthantheviscosityofDME(O．15mm2／s)，anditislowerthanthe0拌dieselviscosity(4．12mm2／s)．DB80fuel’Sviscosityisveryfavorableforhighpressurefuelinjectionsystemcomponentsforthelubrication．Sincethen，thehighproportionofDM

6、EblendedwithlowproportionofbiodieselwasmadeexperimentstooptimizeZS10TDengine．Adjustingplungerdiameterfrom①9mmto10mm．Includinginjectionofconditioning、hybridfuelselection，theselectionofsupplyadvanceangle，aswellastheselectionofinjectionpressure．Bymixingdifferentratiosoffue

7、lintheZS10TDengine，incontrastcharacteristicsofthemixedratioofDB80，DB85andDB90chooseDB80selectivityforabettermixoffuels．Byadjustingtheangleofinjectionadvance19．40CA，170CA，15．2。CAand13．3。CAinDB80engine，andmeritselectiontosupplyadvanceangleat17。CA．Onthisbasis，injectionpres

8、surewereadjustedto18．51VIPa，16．5MPa，14．5MPa，andDB80comparisonofthecharacteristics，andmeritabetterselectioninje