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*杨华勇夏必忠傅新(310027)::TH1375*20000518,20000925020,,,65,7t,5t(CO)1t(HC)05t(NOx),05t,1998~1999,25%,,70%,1(160dm3),402070,,(),,,1,,11(Watt)1776,,,19,,:(5%~13%);,,;,;,;,,1857(EngentioBersanti)(Matteucci),,,1860(Lenoir),,,,,,,,,(Rudoffdiesel)1897,,,,372Vol37No220012CHINESEJOURNALOFMECHANICALENGINEERINGFeb200112/1925(Pescara),;(Freepistongasifier),(Turbine),(Freepistonengine)11/123456789101112110()1,2,6,,17,83,10,,4,,,5,1726,,,9310,,,,1017,,,,122/,(1),,,(2),,,(3);,,(4),,(5),,2050,(SIGMA)1946~1949GS-34(919kW),;2050(FreePistonEngineCrop.)CS-75(919kW);GMGMR4-4(1839kW);,280mm2205kW,1958741152ZF-115S2ZF-115S,:2372(1),,,,,(2),,,,(3),,,,(4),,,2050~60,,,,2030~60(Diesel),,(Stirling)2050(),,2080()13,1312070,,,,,,1966HCCO,,,,,(30%~40%),(,(10%~20%)),(Fuel-economy),(Hybrid-propulsion):(),,3,;:,,132,3:(1)()(2)()320012:(3)()(Energydensity)(Powerdensity),;,1313e/(kJkg-1)p/(Wkg-1)16128633186489817841101,,,;,;,,,,,,3,3,,,,1334412345678/910(ECU)52452,,(),,20%~30%,(CO)(HC)(NOx),134,++,(1),,(Fueleconomy),,2abcde1234567(2)(Recoveryenergybraking),(Dissipationenergybraking),,(3),,(4),(CVT),,,:,80%~90%,64%~81%98%~99%4372;,,,,,,2,2080(Hydraulicfreepistonengine,HFPE),W(WolfgangBack):21,21:,(),,,3,6(HFPE)6312/3(1):(6)(2):(6)(3):,,(6)222217:712345678910111213141516/(1),3HFPE(2),1415,,;,3,(3)()(4)31,,;2,,,,;315,(5)520012:2227,2221,,9,3715,,;2414,,,,145,,1583,,;,,9,3,,2222,ECU,9,1583,9,,315,(BDC)ECU9,9,9,9,,,PPM(Pulsepausemodulation)2223ECU10,,,10,10,146,,ECU10,10,,1410,10,,3,,3,,,,ECU10,10,10,,10(),,,2232231,(1)HFPEHFPE,(2)(3)(4)HFPE,HFPE22322080,,3HFPE:InnasBV(Dresden)6372(Tampere)-(Wisconsin-Madison)(Toyohashi)8(IHA)1999,,8199933,,,,211,..,19912,..,19973.(19491959).,19594..,19985,..,19926..,1994(3)3~57,,..,1996,7(2)42~438NorenOB,ErwinRL.Thefutureofthefree-pistonengineincommercialvehicles.SAETrans.,1958,66305~3149UnderwoodAF.GMR4-4HYPERXfreepistonturbineengine.SAEJournal,1956(7)61~6610FlynnJrG.Observationson25000hoursoffree-piston-engineoperation.SAETrans.,1957,65508~51511FreyON,KlotschP,EgliA.Theautomotivefree-piston-turbineengine.SAETrans.,1957,65629~63412OlsonDR.Simulationofafree-pistonenginewithadigitalcomputer.SAETrans.,1958,66669~68213Heintz,etal.Afree-pistonengine-pumpforanautomotivepropulsionsystem.SAEPaper810266,198114NorioNakazawa,YioichiroKono,etal.Developmentofabrakingenergyregenerationsystemforcitybuses.SAETrans.,872265,198715BuchwaldP,ChristensenG,etal.ImprovementofcitybusfueleconomyusingahydraulichybridpropulsionsystemAtheoreticalandexperimentalstudy.SAEpaper790305,197916WillisFG,RadtkeRR.Hybridvehiclesystemsanalysis.SAEpaper850225,198517BeachleyNH,AnscombC,etal.Minimizationofenergystoragerequirementsforinternalcombustionenginehybridvehicles.ASMETrans.,105(113),198318WuPR,LuoNZ,etal.Fueleconomyandoperatingcharacteristicsofahydropneumaticenergystorageautomobile.SAEpaper851678,198519LiLJ,BeachleyNH.Designfeasibilityofafreepistoninternalcombustionengine/hydraulicpump.SAEpaper880657,198820BaruahPC.Afree-pistonenginehydraulic/pumpforanautomotivepropulsionsystem.SAEpaper880658,198821HibiA,HuY.AprimemoverconsistsofafreepistoninternalcombustionhydraulicpowergeneratorandahydraulicmotorSAEpaper930313,199322TikkanenS,VileniusM.Onthedynamiccharacteristicsofthehydraulicfreepistonengine.In:theJHPSInternationalSymposiumonFluidPowerinTokyo199923PeterAJ.Areviewoffreepistonengineconcepts.SAEpaper941176,199424TikkanenS,VileniusM.Hydraulicfreepistonengine-thepowerunitofthefuture?In:ProceedingsoftheForthJHPSInternationalSymposiumonFluidPowerTokyo99HYDRAULICFREEPISTONENGINEEVOLUTIONPROCESSANDRECENTSTUDIESYangHuayongXiaBizhongFuXin(ZhejiangUniversity)AbstractTheevolutionprocessandrecentstudiesofhydraulicfreepistonenginearedescribed,whichisexpectedtohavesignificantadvantagesandpromisingfutureinenergy-savingtransmission.Keywords:HFPEEvolutionprocessRecentstudies,,1961,,720012: