车辆工程外文翻译内燃机的燃油供应系统Word文件下载.docx
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车辆工程外文翻译内燃机的燃油供应系统Word文件下载.docx
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FuelSupplySystemForAnInternalCombustionEngine
Abstract
Apulsationdamperisprovidedbetweenandinserieswithalowpressurefuelsystempipeandahighpressurepumpofafuelsupplysystem.Duringstartupofanengine,lowpressurefuelsuppliedviathelowpressurefuelsystempipeisinjectedfromanintakepassagefuelinjector.Whenthefuelpressureisequaltoorlessthanafuelpressureatwhichgoodstartabilitycanbemaintained,thepulsationdamperclosesoffcommunicationbetweenthehighpressurefuelsystempipeandthelowpressurefuelsystempipeusingthespringforceofaspring.
Keywords:
Fuelsupplysystem;
Aninternalcombustionengine;
Apulsationdamper;
Alowpressurefuelsystempipeandahighpressurepump;
Afuelsupplysystemforaninternalcombustionengine,comprising:
alowpressurepumpthatiscapabletopressurizefuel;
alowpressurefuelsupplypassagethatiscapabletosupplyfuelthatwaspressurizedbythelowpressurepumptoalowpressurefuelinjectionmechanismwhichinjectsfuelintoanintakepassage;
abranchpassagethatbranchesofffromthelowpressurefuelsupplypassageandthroughwhichthefuelthatwaspressurizedbythelowpressurepumpflows;
ahighpressurepumpwhichiscapabletopressurizethefuelsuppliedviathebranchpassage,thehighpressurepumpbeingdrivenbytheinternalcombustionengine;
ahighpressurefuelsupplypassagethatiscapabletosupplyfuelthatwaspressurizedbythehighpressuretoahighpressurefuelinjectionmechanismwhichinjectsfuelintoacylinder;
andapulsationreducingmechanismprovidedonanintakesideofthehighpressurepump,wherein,whentheinternalcombustionengineisstartedbyonlyinjectingfuelfromthelowpressuresupplypassageintotheintakepassage,thepulsationreducingmechanismclosesoffcommunicationbetweenthelowpressurefuelsupplypassageandthehighpressurefuelsupplypassageuntilapressureoffuelinthelowpressurefuelsupplypassagereachesapredeterminedpressurevaluerequiredforstartingtheinternalcombustionengine.
Backgroundoftheinvention:
1.FieldoftheInvention
Theinventionrelatestoafuelsupplysystemforaninternalcombustionengineprovidedwithafuelinjectionmechanismthatinjectsfuelathighpressureintoacylinder(i.e.;
afuelinjectorforin-cylinderinjection,hereinafterreferredtoas“in-cylinderfuelinjector”)andafuelinjectionmechanismthatinjectsfuelintoanintakepassageoranintakeport(i.e.,afuelinjectorforintakepassageinjection,hereinafterreferredtoas“intakepassagefuelinjector”).Moreparticularly,theinventionrelatestoafuelsupplysystemthatcanimprovestartabilityofaninternalcombustionengine.
2.DescriptionoftheRelatedArt
Agasolineengineisknownwhichisprovidedwithafastfuelinjectionvalveforinjectingfuelintoacombustionchamberoftheengine(i.e.,anin-cylinderfuelinjector)andasecondfuelinjectionvalveforinjectingfuelintoanintakepassage(i.e.,anintakepassagefuelinjector),anddividestheinjectedfuelbetweenthein-cylinderfuelinjectorandtheintakepassagefuelinjectoraccordingtotheenginespeedandengineload.Also,adirectinjectiongasolineengineisalsoknownwhichisprovidedwithonlyafuelinjectionvalveforinjectingfuelintothecombustionchamberoftheengine(i.e.,anin-cylinderfuelinjector).Inahighpressurefuelsystemthatincludesanin-cylinderfuelinjector,fuelofwhichthepressurehasbeenincreasedbyahighpressurefuelpumpissuppliedtothein-cylinderfuelinjectorviaadeliverypipe.Thein-cylinderfuelinjectortheninjectsthehighpressurefuelintothecombustionchamberofeachcylinderoftheinternalcombustionengine.
Inaddition,adieselengineisalsoknownwhichhasacommonrailtypefuelinjectionsystem.Inthiscommonrailtypefuelinjectionsystem,fuelwhichhasbeenincreasedinpressurebyahighpressurefuelpumpisstoredinacommonrail.Thehighpressurefuelistheninjectedintothecombustionchamberofeachcylinderofthedieselenginefromthecommonrailbyopeningandclosinganelectromagneticvalve.
Inordertoincreasethepressureof(i.e.,pressurize)thefuelinthiskindofinternalcombustionengine,ahighpressurefuelpumpisprovidedwhichisdrivenbyacamprovidedonadriveshaftthatisconnectedtoacrankshaftoftheinternalcombustionengine.
JapanesePatentApplicationPublicationNo.JP-A-2005-139923describesahighpressurefuelsupplysystemforaninternalcombustionenginethatcanreducevibrationalnoisewhenonlyasmallamountoffuelisrequiredbytheinternalcombustionengine,suchasduringidling,whilebeingabletodeliverthenecessaryamountoffuelovertheentireoperatingrangeoftheinternalcombustionengine.Thishighpressurefuelsupplysystemforaninte
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