壓縮天然氣汽車減壓器建模與仿真

1、分類號(hào)：U4610710—20051197滾步犬海碩士學(xué)位論文壓縮天然氣汽車減壓器建模與仿真導(dǎo)師姓名職稱申請(qǐng)學(xué)位級(jí)別張曉煒?biāo)纠龈苯淌诠W(xué)碩士學(xué)科專業(yè)名稱載運(yùn)工具運(yùn)用工程論文提交日期2008年5月19日論文答辯日期2008年5月30日學(xué)位授予單位長(zhǎng)安大學(xué)答辯委員會(huì)主席學(xué)位論文評(píng)閱人曹建明教授曹建明教授劉圣華教授鶯AbstractInrecentyears，governmentsofcountriesofthewholeworldhave

2、beenseekingforasolutiontothedilemmabetweentheairpollutionresultedfromrepaidgrowthofvehiclepossessivequantityandthechangeofvehiclefuelstructure，forwhichnatural—gas—drivenvehicleisbeingencouragedgreatlyinmostcountriesNatur

3、algas—drivenvehicleisgenerallyabbreviatedasNGV(namelysuchvehicleisdrivenbypurelycompressednaturalgas—CNGliquefiednaturalgas—LHG)Foritsbetteremissionperformance，NGVisgoodforreformingcurrentvehiclefuelstructurewithlowerrun

4、ningcost，ripetechnologyandstablefunction，SOthatithasbeenacceptedasthebestchoiceforsubstitutetogasolinedrivenvehicleDecompressorisamostimportantcomponentinthefuelsupplysystemofCNGVwhosemajorfunctionislevelbyleveltodecompr

5、essthehighlycompressedNGtoadegreeforgasfuelpressuredegreethatisacceptablefortheengineHoweverastothedecompressorstructuredesigninChina，itiSraretoanalyzetheeffectofdecompressor’Sstructureparameteronitsperformanceintheviewp

6、ointofmathematicsmodeling，ratherthandetermineandregulatethedecompressor’SspecificstructuralparameterthroughpracticaltryoutInordertounderstandtheeffectofthedecompressor’Sstructuralparameteronitsactualworkingperformance，th

7、isdissertationappliesthemethodofcombiningtheoryandmodelinganalysistothestudysetsupphysicalandmathematicmodelsrespectivelyforthetransformationofinnergasandthemovablepartsofvalvesinthedecompressorandthroughusingtheMATLABma

8、thematicanalysisemulationsoftwareandtakingsuchperformanceindexrequirementasforevaluatingthesystematicstabilityandthevelocity’Sinfluencecapabilityofsystematiccontrolprincipleintoconsideration，makespressurevariationcurveem

9、ulationandstructureparameterperformanceanalysisfortheeffectfromchangingthedecompressor’Sstructureparameterinthemodels，thenbasedonthemodelsestablished，recommendsareasonablerangefortheoptionofparameterTheconclusionofthestu