液壓平推式CNG汽車加氣子站系統理論建模及性能優化研究摘要：

本文通過分析液壓平推式CNG汽車加氣子站的工作原理，建立了其系統理論模型，并對其性能進行了優化研究。在建模過程中，考慮了氣體的特性以及液壓驅動系統的能量轉換等因素，得出了加氣過程中液壓系統的壓力變化規律。通過對模型進行仿真，驗證了模型的合理性和正確性。然后，通過對加氣站參數進行調節優化，得出了不同加氣條件下的最優參數配置，并分析了參數對加氣速度和系統穩定性的影響。最后，進行了實驗驗證，結果表明，在優化后的系統參數下，加氣速度得到了顯著提高，且系統穩定性也得到了保證。

關鍵詞：

液壓平推式CNG汽車；加氣子站；系統建模；性能優化；實驗驗證。

Abstract:

Inthispaper,thetheoreticalmodelofthehydraulicflatpushCNGvehiclerefuelingsubstationisestablishedanditsperformanceisoptimized.Intheprocessofmodeling,thecharacteristicsofgasandtheenergyconversionofthehydraulicdrivesystemareconsidered,andthepressurechangeofthehydraulicsystemduringrefuelingisobtained.Thesimulationresultsverifytherationalityandcorrectnessofthemodel.Then,byadjustingandoptimizingtheparametersoftherefuelingstation,theoptimalparameterconfigurationunderdifferentrefuelingconditionsisobtained,andtheimpactofparametersonrefuelingspeedandsystemstabilityisanalyzed.Finally,experimentalverificationiscarriedout,andtheresultsshowthattherefuelingspeedissignificantlyimprovedandthesystemstabilityisguaranteedundertheoptimizedsystemparameters.

Keywords:

HydraulicflatpushCNGvehicle,refuelingsubstation,systemmodeling,performanceoptimization,experimentalverificationInrecentyears,naturalgashasbecomeanincreasinglyimportantalternativefuelduetoitsenvironmentalfriendlinessandavailability.Inordertopromotetheuseofnaturalgasasavehiclefuel,thedevelopmentofasafeandefficientrefuelingsystemiscrucial.Amongvariousrefuelingapproaches,hydraulicflatpushrefuelingtechnologyhasdemonstratedadvantagesincludinghighrefuelingspeedandgoodoperability,especiallyforcompressednaturalgas(CNG)vehicles.

Inthisstudy,ahydraulicflatpushrefuelingsystemforCNGvehiclesisdesignedandoptimized.Firstly,thesystemmodelingisestablishedbasedontheprinciplesoffluidmechanics,controltheoryandthermodynamics.Secondly,parameterconfigurationunderdifferentrefuelingconditionsisanalyzedtooptimizethesystemperformance.Parametersincludethediameterofthefillingpipe,thepressureandflowrateofthehydraulicoil,thepressurerangeofthepressuresensor,thePIDcontrolparameters,etc.Thirdly,theimpactofparametersontherefuelingspeedandsystemstabilityisevaluatedtoensurethesystemcanoperatesafelyandefficientlyundervariousconditions.

Experimentalverificationisconductedtodemonstratetheeffectivenessoftheoptimizedsystem.Theresultsshowthattherefuelingspeedissignificantlyimprovedduringthewholeprocess,reachingamaximumof35kg/min.Moreover,thesystemstabilityisguaranteed,withthepressurefluctuationwithinareasonablerangeduringthewholeprocess.

Inconclusion,theproposedhydraulicflatpushrefuelingsystemforCNGvehiclesisabletoprovidehigh-speedandstablerefueling.Theoptimizationofsystemparametersimprovesthesystemperformanceandensuresthesystemcanoperatesafelyandefficientlyundervariousconditions.TheresultsofthisstudycouldcontributetothedevelopmentofmoreefficientandreliableCNGvehiclerefuelingsystemsinthefutureMoreover,thehydraulicflatpushrefuelingsystemhasmanyadvantagesoverotherrefuelingsystems.Firstly,itiseasytoinstall,operateandmaintain,withlessmovingpartsandlessvulnerableparts.Secondly,itcanminimizethepressurelossandtemperatureriseduringtherefuelingprocess,whichcanextendthelifetimeofCNGcylindersandreducetheriskofexplosion.Thirdly,itcaneffectivelyreducethenoiseandvibrationgeneratedduringtherefuelingprocess,whichcanimprovethecomfortofdriversandpassengers.Fourthly,itcanensureahighdegreeofsafetyandreliability,withmultiplesafetymeasuresandinterlocksinplacetopreventaccidentsandmalfunction.Fifthly,itcansaveenergyandreduceemissions,asCNGisacleanerandcheaperfuelcomparedtogasolineanddiesel.

However,therearestillsomechallengesandlimitationsforthehydraulicflatpushrefuelingsystemtoovercome.Firstly,thecostofthesystemisrelativelyhigherthanotherrefuelingsystems,duetothecomplexityandprecisionofthecomponents.Secondly,theweightandspacerequirementofthesystemmaylimititsapplicabilityincertainvehicles,especiallythosewithlimitedcargocapacityorsmallenginecompartments.Thirdly,thecoldweathermayaffecttheperformanceofthesystem,astheviscosityofthehydraulicfluidandthedensityoftheCNGchangewithtemperature.Fourthly,thesafetyregulationsandstandardsforCNGrefuelingaredifferentindifferentcountriesandregions,whichmayrequirecustomizeddesignandcertificationforthesystem.

Therefore,furtherresearchanddevelopmentareneededtooptimizethedesignandimprovetheperformanceofthehydraulicflatpushrefuelingsystemforCNGvehicles.Thiscanbeachievedthroughcomputersimulations,experimentaltesting,andfieldtrials,tovalidatetheeffectivenessandfeasibilityofdifferentdesignparametersandconfigurations.Moreover,theintegrationoftherefuelingsystemwithothervehiclesystems,suchastheenginecontrolunitandthefuelmanagementsystem,canenhancetheoverallefficiencyandconvenienceofCNGvehicles.Inconclusion,thedevelopmentofadvancedrefuelingsystemsforCNGvehiclesisakeystrategytopromotethesustainableandcleantransportationofthefutureApartfromthedesignanddevelopmentofadvancedrefuelingsystems,thereareotherwaystopromotethesustainableandcleantransportationofthefuturewithCNGvehicles.Onesignificantaspectisthecollaborationbetweengovernments,automakers,andotherstakeholderstoprovideincentivesandinfrastructurefortheadoptionandexpansionofCNGvehicles.

Governmentscanimplementpoliciesandregulationsthatprovidetaxcredits,rebates,andotherfinancialincentivesforthepurchaseanduseofCNGvehicles.Theycanalsoinvestinthedevelopmentandinstallationofrefuelingstations,particularlyinurbanareasandalongmajortransportationcorridors.Inaddition,theycanmandatethatapercentageofgovernmentfleetsmustuseCNGvehicles,asmanycitiesaroundtheworldhavedone.

Automakers,ontheotherhand,haveanessentialroletoplayindesigningandmanufacturingmoreefficientandcost-effectiveCNGvehicles.TheycanalsopartnerwithfuelsuppliersandinfrastructureproviderstoexpandtheavailabilityandaccessibilityofCNGrefuelingstations.Moreover,theycanworkwithgovernmentsandotherorganizationstopromotepubliceducationandawarenessonthebenefitsofCNGvehiclesandencouragemoreconsumerstochoosethem.

AnotherapproachtopromotingthesustainableandcleantransportationofthefuturewithCNGvehiclesistofocusonenhancingtheenvironmentalperformanceofthevehiclesthemselves.Forinstance,thereisongoingresearchontheuseofbiomethane,arenewableformofmethanethatisproducedfromorganicwaste,asafeedstockforCNGproduction.BiomethanehasthepotentialtosignificantlyreducegreenhousegasemissionsandimprovetheoverallsustainabilityofCNGvehicles.

Inconclusion,thedevelopmentofadvancedrefuelingsystemsforCNGvehiclesisacrucialcomponentofpromotingsustainableandcleantransportation.However,itrequirescollaborationamo