高比例生物柴油和二甲醚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T大学硕士研究生学位论文EXPERIMENTALSTUDY0FDII之ECTINJECTIOND1ESELENGINEOPERATEDONHIGHPROPORTl0NBIODIESEL—DMEBLENDSABSTRACTTheconflictofHumanenergydemandandenergyusingcausedenvironmentalpollutionhasbeentohaunttheworld．Withthecontinuousdevelopmentoftheautomotiveindustry，theenvironmentali

2、ssuehasbecomeincreasinglyserious．Inthedenselypopulatedcityandtrafficdevelopedminingareas，alargenumberofdistributedeverywhereemissionsareaseriousthreattothephysicalandmentalhealthofresidentsandunderminedtheecologicalbalance．Atthesametime，automobilefuelconsumptionasasourceofthew

3、orld’Spetroleumresourcesexacerbatetheshortage．Therefore，lookingforcleanalternativefuelvehicleshasagreatsignificancefordevelopmentofthewholeworld．BiodieselasacleanalternativefuelhasbeenthvoredbytheStates．Ithashighcetanenumber,coldstartperformance，anditisanidealalternativefueloi

4、l．However,thehighviscosityofbiodieselisnotconducivetoevaporationintheIII太原理工大学硕士研究生学位论文cylinder,whichdirectssimpactonthebio··dieselinthecompression··ignitionenginepowerandexhaustemissions．AndDMEhaslowviscosity,lowboilingpoint．ThebiodieselblendedwithlowproportionoftheDMEiscondu

5、civetoreducingtheviscosityofbiodiesel，anditisconducivetobiodieselmixedwithairinthecylinder,andtheengineisconducivetoreducingemissionsofharmfulsubstances．SoahighproportionofbiodieselblendedwithlowofDMEfuelwasmadeexperimentinZS10TDdieselengine．Viscosityistodeterminethenatureofth

6、eprimaryfuelatomizationfactors．ThefirstissueistestingthebiodieselandO撑dieselindifferenttemperatures，andcontrasttests，concluded：Whenthetemperatureof20。C，theviscosityofbiodieselistheviscosityofdiesel1．80times．whenthetemperatureis80。C，theviscosityofbiodieselistheviscosityofdiesel

7、1．73times．Generallyspeaking，biodieselviscositychangeswiththetemperaturelowerratethantherateofdecreaseviscosityofdiesel．TheblendedfuelBD70，BD80，BD90havebeenexperimentedintheenginewhichwithoutadujustingtheZS10TDengine’Sparameters．Thepowerperformance，economicperformanceandemissio

8、nsperformancearetestingintheengine，andchoosingbetterblendedfu