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1、ResearchJournalofAppliedSciences,EngineeringandTechnology2(3):245-251,2010ISSN:2040-7467©MaxwellScientificOrganization,2010SubmittedDate:March10,2010AcceptedDate:March30,2010PublishedDate:May10,2010Pneumatic,PLCControlled,AutomotiveGearShiftingMechanismMuntaserMomani,MohammedAbuzal
2、ata,IgriedAl-KhawaldehandHishamAl-MujafetDepartmentofMechanicalEngineering,FacultyofEngineeringTechnology,Al-Balqa’AppliedUniversity,Amman,P.O.Box15008,11134,JordanAbstract:Inthisstudy,agearshiftingmechanismwasdesignedandappliedtomaketheshiftingprocessfasterandlessdestructibleforth
3、edriver.Thenewdevicemustbereliable,hasasmalldimensions,lowconstructionandmaintenancecost.Thispaperaimstoimprovegearshiftingprocessusingdevicesas:amanualfourspeedgearbox,fourpneumaticdoubleactingcylinders,fourpneumatictwopositionfivewaysdirectionalcontrolvalves,ProgrammableLogicCont
4、roller(PLC)LOGOunit,anelectricalmotor,anelectricalclutch,abelt,twopulleys,limitswitches,pushbuttons,bulbs,atable(holder)andpowersupply.Accordingtosuggestedgear_shiftingmethodthedrivercanselectthetransmissiongearratiowithoutmovinghishandsfromthesteeringwheelbyputtingthegearshiftingp
5、ushbuttonsonthesteeringwheel.Usingthismethodleavestothedrivertheexcitementofchoosingtheshiftingmoment.Keywords:Directionalcontrolvalve,gearbox,gearshiftingmechanism,pneumaticcylinder,ProgrammableLogicController(PLC),solenoidvalveINTRODUCTIONcrowdedroadonahillorasuddendetourmakesalo
6、toftensiononthedriver.OneofthedifficultiesinthisThisstudydescribesindetailinanunderstandablesituationistochoosetherightreductionratioandwaytohowtoconvertthetraditionalmanuallygearengagingitattherighttime(Brejchaetal.,1993;Okadashiftingmechanismtoasemi-automatedgearshiftingetal.,200
7、2;Taguchietal.,2003;Yi,1998).mechanismbyusingtheProgrammableLogicControllerThisdesignhelpsthedrivertoincreasehisfocusing(PLC).ontheroad.AlsoreducesthetimeneededtoengagetheIncreasingdemandsonperformance,qualityandcostrequiredreductionratio,whichincreasesthevehicles'arethemainchallen
8、gefortoday'sautomotiveindu
