The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by___________.
所属题库:二管轮

题目介绍:
Theamountoffuelinjectionintoadieselenginecylinderbyaunitinjectoris
controlledby___________.,
the firing pressure in the cylinder?a metering helix inside the pump?varying the physical length of the plunger stroke?varying the clearance between the injector cam and the injector rocker arm? 本题为最佳选择题收录于二管轮题库中。
注意事项:
本内容均收集于互联网,版权等归原权属方所有,仅供网友学习交流,未经权属方书面授权,请勿作他用. 若发现本图侵犯了您的权益,请联系我们快速处理,感谢您对互联网分享方式的理解与配合。
相似内容
-
Ifitbecomesnecessarytocutoutanindividualcylinderofalargelow-speedmain propulsiondieselenginethefueltothatcylindershouldbesecuredandits_________.
-
Inlargelow-speedmainpropulsiondieselenginepositionringgroovewearusually occursatthe_________________.
-
Thermocouplepyrometersareusedonlargemainpropulsiondieselenginestoindicate thetemperatureofthe_______.
-
Thesizeofthedischargeringusedfortheefficientoperationofadisktypepurifier isdependentuponthe___.
-
Beforechargingarefrigerationunittherefrigerantcharginglinesshouldbe.
-
Adirtyfueloilfilterelementcanbedetectedby_____.
-
Afour-strokecycleturbocharged1000horsepowerdieselenginehasbeenoperating underloadTheloadsuddenlyincreasescausingexcessiveblackexhaustsmokeandarapid riseinthelubeoiltemperatureInresponsetothisconditionyoushould:
-
Thedepthoffueloilinatankisnormallymeasuredthroughthe________.
-
Mosthydraulicsteeringgearsarefittedwithreliefvalveswhich.
-
Whenattemptingtostartamainpropulsiondieselenginetheenginetheengineturns attheproperspeedbutwillnotstartYoushouldcheckthe_______.
-
WhichofthelisteddesignfeaturesisfoundinanexhaustvalveandNOTinanintake valve?
-
Howdosewaterenterthecrankcaseofadieselengine?
-
Areservoirasusedinhydraulicsystemsaboardshipisusedtostorehydraulic oilAnotherfunctionisto
-
Lowcylindercompressionpressureandahighexhausttemperaturemayindicate________.
-
Todeterminethemainbearingclearanceofapropulsiondieselengineyoushould measurethemainbearingshellusingaballanviloutsidemicrometerandmeasurethe crankshaftjournalusinga/an________.
-
Dieselengineelectricstartingmotorsgenerallyrequireheavierdutymotorsandmotors andoperateathighervoltagesthancomparablestartingmotorsforgasolineenginesdue to_____________.
-
Coldweatherstartingofadieselengineismoredifficultthanwarmweatherstarting dueto_____.
-
Whichactionshouldbetakenwhenanauxiliaryboilerinisoperation?
-
Exhaustgaspyrometersareusefulfor_______.
-
Ruddermotionispreventedfromexceedingthemovementofthesteeringwheelbythe.
-
Whencomparingdifferentfuelsfordifferentenginestheignitionqualityofdiesel fueloilsbecomesalesscriticalconsiderationas______________.
-
Cloggeddieselenginefueloilfilterscancause_.
-
Adisadvantageofafour-stroke/cycledieselengineis________.
-
Insufficientendclearanceonnewlyfittedpistonringsinadieselenginewillcause theringsto_.
-
Injectionlaginadieselenginemaybecausedby_______.
-
Ifadieselenginedrivingageneratorturnsoverfreelybutfailstofireproperly thecausecouldbe___________.
-
Wateraccumulationinthecylinderofasecuredengineisanindicationthatthe_______.
-
Apressuredropintheliquidlineofarefrigerationsystemmaycause________.
-
Purgingairfromahydraulicsystemisnecessarywhen.
-
Whenfuelentersthecrankcaseofadieselengineit________.
-
Crackingofadieselpistoncrowncanresultfrom_______________.
-
Ifthebowlofadisktypecentrifugalpurifierwhenoperatedasaseparatorisnot primedthe.
-
Apistonisatbottomdeadcenterwhenitis_________.
-
Anacceptablemethodofmeasuringforthecorrectrotationalforceappliedtothe connectingrodandmainbearingboltsistousea__________.
-
Ifthepistongroovedrainholesfortheoilcontrolringsbecomecloggedwhichof thefollowingislikelytooccur?
-
Alargetwo-stroke/cycledirectreversingdieselengineistobereversedPriortothe admissionofstartingairyoumust________.
-
Dieselengineexhaustnoisecanbereducedinanexhaustmufflerby___.
-
Visualinspectionofchrome-platedpistoncompressionringsrevealsablackringface atthepositionofthecylinderlinerportsThisconditionindicatesaringwhich.
-
Inafour-strokecycledieselenginetheintakevalvesopen___________.
-
Highexhausttemperaturesfromallofcylinderofaturbochargedfour-stroke/cycle dieselenginecanbecausedbyan____.
-
Adieselenginemayfailtostartdueto____________.
-
Thelatentheatofwatervaporinairisdependentuponthe_______.
-
Fueloilisregularlytransferredtothedaytankinorderto_______.
-
Smallcrackinthecrankshaftbearingsurfaceofadieselengineareanindicationof____.
-
Theinsertionofshimsbetweenthefootofamarinetypeconnectingrodandabearing boxwouldresultin__________.
-
Ifanauxiliarydieselenginefrequentlystallsthetroublemaybecausedby___.
-
Followingthefailureofoneturbochargeronalargecrossheadmainpropulsiondiesel enginefittedwithmultipleturbochargerswhichofthefollowingactionsshouldbe takenpriortofurtheroperationoftheengine?.
-
Inalargelow-speeddieselenginetheclearancebetweenthepistoncrownandcylinder headisfoundtobeexcessiveInordertocorrectforthisyoushould_________.
-
Ifsludgeaccumulatesontheundersideofadieselenginepistonitwill_.
-
Inthecylinderofadieselenginefuelisignitedbythe________.
-
Burnerignitionfailureinanautomaticallyfiredauxiliaryboilerwouldbecausedby.
-
Inaturbochargedfour-stroke/cycledieselenginetheexhaustvalveremainsopenuntil aftertopdeadcenterandtheintakevalveopensbeforetopdeadcenterto_______.
-
PistonareaXPistonstrokeKnumbersofthecylinders=engine_______.
-
Afour-stroke/cycle1000horsepowerdieselenginefailstostartatnormalcranking speedwithnormalfuelpressureandambienttemperatureThereasonforthefailurecould be___.
-
Whatcolorexhaustwillbeexhibitedwhenaslowspeedtwo-stroke/cyclemainpropulsion dieselenginedesignedtooperateonlightandheavyfueloilisoperatedon insufficientlypreheatedheavyfueloil?
-
Dieselenginepistonseizurecanbecausedby______________.
-
Rudderpositionisshownonthebridgebythe.
-
Whilemaneuveringyoudiscoverheavysmokecomingfromtheturbochargercasingyou should__________.
-
Dieselenginestartingdifficultiesduetocoldintakeairtemperaturescanbeovercome byusinga/an_.
-
Iffueloilwerebeingdischargedfromthewasteroutletofafueloildisktype centrifugeoperatedasseparatoryoushould___________.
-
Topreventtheunnecessaryloadingofanairconditioningsystemwhilemaintainingthe designeddrybulbtemperatureandrelativehumidityinanairconditioningsystemyou should_______.
-
Whenairisatitsdewpointitisatits______.
-
Foradieselengineindividualcylinderperformanceiscommonlydeterminedbyexhaust gas_____________.
-
Airtrappedinthehydraulicfluidofasteeringsystemwouldbeindicatedby.
-
Adieselenginecouldfailtostartbecauseof____.
-
Whichofthefollowingstatementsistrueconcerningthecetanenumberofdieselfuel?
-
Hotgasbypassisoneofthemethodsusedto_________.
-
Thebreaking-upoffuelasitentersadieselenginecylinderisknownas______.
-
Whichofthefollowingconditionsmaybeattributedtoafouledturbochargercompressor inletscreenorfilter?.
-
Aconditioncontributingtodieselenginepistonringsstickingintheringgrooves isinsufficientringclearanceatthering___________.
-
Burningfuelwithahighsulfurcontentinadieselenginewill_.
-
Theignitionqualityofadieselfueloilisindicatedbythe________.
-
Dieselengine‘blow-by’intothecrankcaseiscausedbyexcessivering______.
-
Dieselengineinjectionlagiscausedby_________.
-
Whentransmittedbyareductiongeardieselenginespeedisreducedandthetorque availableforwork_____.
-
Animportantconsiderationinselectingalubricatingoilforuseinarefrigeration compressorisfortheoilto_____
-
Youareinspectingthelowermainprecisionbearingsonadieselengine.Youobserve thatabouthalfthethinBabbittliningsareofamilkywhitecolourThisconditionis causedby_____.
-
Wheninstallingringsonadieselenginepistonyoushouldcheckthering_.
-
AccordingtoRegulationsapowerdrivenauxiliarysteeringgearforavesselcapable ofa20knotservicespeedmustbecapableofproducingaruddermovementatwhichof theminimumspeedslistedbelow?
-
Thefueloilsupplysystemtoanautomaticauxiliaryboilerwillautomaticallyshutdown iftheboiler______.
-
AdieselenginefailstostartbecauseofwaterinthefuelInordertostarttheengine youshould______?
-
Excessivelywornorpolishedendsonadieselenginevalvespringindicate______.
-
Priortostartingthepurposeofturningoveramainpropulsiondieselenginewith thecylindertestcocksopenisto______
-
Apistonissaidtobeattopdeadcenterwhenitis______.
-
Whenthehelmdemandsa20°rightruddermovementfromanelectro-hydraulicsteering gearwhichofthelistedactionswillbetheFIRSTactiontohappenwhenthisrudder positionisattained?
-
Improperlyfittedpistonringsinadieselenginecancause______.
-
Thepressurerangebetweenthesystemcutinandcutoutpressuresinarefrigeration unitisknownas_______.
-
Theexhaustsystemforaturbochargedtwo-stroke/cycledieselenginefunctions to_______.
-
Exhaustvalveopeningsinadieselenginecylinderheadaremadeaslargeaspractical to__________________.
-
Ifacrankcaseexplosionhasoccurredinadieselengineandthecrankcaseremains intactwhichoffollowingprecautionsshouldbeobserved?
-
Bottomblowvalvesareinstalledonauxiliarywater-tubeboilersto___________.
-
Thetimingofdieselengineairstartingvalvesiscontrolledby__________.
-
Themostpracticalwayofdetectinganoverloadinonecylinderofanoperatinglarge low-speedmainpropulsiondieselengineisto______.
-
Whichofthefluidslistedisnormallyusedtocondensetheprimaryrefrigerantina shipboardcentralairconditioningsystem?
-
Apyrometerisaninstrumentusedtomeasurethetemperatureofthediesel engine_____________.
-
Adropincompressionpressureinonecylinderofadieselenginecanbecausedby_______.
-
Ifthebackclearanceofapistonringisexcessive.
-
Wornmainbearingwillcausethecompressionratioofanauxiliarydieselengine to______.
-
Intheeventofaflamefailureinanauxiliarywater-tubeboileryoumust______.
-
Indieselengineeringpracticethetermusedtoexpresstheignitionqualityofa particularfuelis_.
你可能感兴趣的试题
- Coldweatherstartingofadieselenginemaybemadeeasierby.
- Iftheturbochargerfailedonanauxiliarydieselenginewhichofthefollowing conditionswouldprobablyoccur?
- Whichofthefollowingstatementsconcerningfuelatomizationinadieselengine cylinderiscorrect?
- Thepurgingofairfromanelector-hydraulicsteeringgearunitisnecessarywhen.
- Duringthevalveoverlapperiodtheexhaustpressureofaturbochargers four-stroke/cycledieselenginemustbelessthantheintakemanifoldpressuretoensure __________.
- Lowcompressioninadieselenginecouldbecausedby________________.
- Apowerfailureinthehydraulicsystemofacompacttypesteeringgearwouldcause therudderto.
- Aturbochargedfour-stroke/cycledieselenginehasalargervalveoverlapthana naturallyaspiratedfour-stroke/cycledieselengineinordertoincreasethe______.
- Thereceiverusedinarefrigerationsystem_______.
- Auxiliaryboilerscanbeclassifiedas.
- Afireboxexplosioninanautomaticallyfiredauxiliaryboilermaybetheresultof ________.
- Wateraccumulatinginthecrankcaseofadieselenginecouldindicate_______.
- Adieselenginemaybehardtostartifthe____.
- Increasingthespeedofacentrifugalpumpwillresultinanincreaseinitscapacity initscapacityAnothermeansofincreasingthecapacitypumpistoincreasethe.
- Beforechargingarefrigerationunittherefrigerantcharginglinesshouldbe.
- Properfilteringandstrainingofdieselfuelisimportantbecausethe.
- Ifallotherconditionssuchasborestrokespeedandmeaneffectivepressuresare equalatwo-stroke/cycledieselenginewilldevelopapproximately_______.
- Whichofthefollowingproceduresdecreasesthetotaldissolvedsolidsconcentration inthewaterofanauxiliaryboiler?
- Asthedesignatedrudderangleisbeingachievedasaresultoftheoriginalcommand inputthesteeringgearfollow-upmechanismis.
- Asuddendropincompressionpressureinonecylinderofadieselenginecanbecaused by______________.
- Reducingtheclearancebetweenavalvestemandrockerarmwillresultinthevalve _____.
- Inthedesignofhydraulicpipingandequipmentconsiderationisgiventominimize turbulenceinthehydraulicfluidasthiswillcause.
- Whichofthefollowingreasonsrepresentswhythedesignedcompressionratioofa gasolineengineislowerthanthatofadieselengine?
- Onemethodofdeterminingcrankshaftmisalignmentisby________.
- Ifyouhearda‘crackling’noiseincentrifugalpumpthemostprobablecauseofthe problemwouldbe___.
- Thespeedoftheturbochargerforafour-stroke/cycledieselenginedrivingagenerator atconstantspeeddependsonthe__________.
- Inanoperatingrefrigerationsystemlowonrefrigerantaliquidlinesightglass will______.
- Thelossofthedieselenginecylinderairchargethroughleakyvalvespistonrings wornorscoredlinerswouldbeindicatedbywhichofthefollowingsetsofconditions?
- AdieselengineisturnedatnormalcrankingspeedandnoignitionoccursThiscould betheresultof____.
- Adieselengineexperiencesasuddenlossinspeedaccompaniedbyblackexhaustsmoke withthefuelrackatmaximumandspeedremainingbelownormal.theprobable___.
- Duringthepowerstrokeofafour-stroke/cycledieselenginemostofthesidethrust ofatrunk-typepistonisabsorbedbythe_____________.
- Ifyounoticesmokecomingfrothecrankcaseexhaustfanoutletofanoperatingdiesel engineyouwouldsuspect______.
- Thehydraulicoilmostlikelytothinoutwhenhotandthickwhencoldwouldhavea viscosityindexof.
- Afaultyinjectioninonecylinderofanoperatingdieselenginecanbelocatedby____.
- Thelongertheignitiondelayperiodresultingfromimproperuseoflowcetanefuel the__________.
- Thepurposeofdesigningsomewasteheatboilerswithsinuousfiretubesisto_______.
- Dieselenginepistonringblow-byisusuallycausedbyexcessiveringclearanceatthe ring___________.
- Ifadieselenginewererunningat20%overloadwithasmokyexhaustyoushould_____.
- Abronzebearinglinerwithalead-tinflashinghasamilky-whitecolorovermostof itssurfaceandsomeareasofexposedbronzethewhitecoloringindicates________.
- Theignitionqualityofafueloilisanimportantoperationalconsiderationbecause it________.
- Asmokingburnerwithapulsatingflameinauxiliaryboilerisanindicationthatthe.
- Dieselenginecrankshaftdeflectionreadingsaregenerallytakenatfourcrank positionsGoodengineeringpracticerequiresthedeflectiongageorindicatorto be________
- Whenthenormalcompressionratioofadieselengineisnotveryhighmisfiringat lightloadsmaybecausedby____________.
- Inadieselengineexhaustsystemthecoolingoftheexhaustgasesbelowtheirdew pointwillresultin____.
- ThemainpropulsiondieselcontinuesrunningafteryoutrytoshutdownYoushouldnow attemptto_.
- Whichofthefollowingproblemscancauseanabovenormalairtemperaturetodevelop intheintakemanifoldofaturbochargedandafter-cooleddieselengine?
- Whichoftheroutinemaintenanceprocedurelistedisrequiredforstartingairreceivers?
- Airinthefuellinestothefuelinjectionnozzlesofadieselwillresultin______.
- Awaterjacketisplacedaroundtheexhaustmanifoldsofpropulsiondieselenginesto__.
- Ifwaterisfoundinthecrankcaseofadieselenginethecausemaybedueto______.
- Trunk-typedieselenginepistonsaremosteffectivelycooledbyheat_____.
- Insewagetreatmentthetermmacerationreferstotheprocessof______.
- Poorqualityfuelbeingusedinaturbochargedmedium-speeddieselenginecouldresult in__________________.
- Atwo-stroke/cycledieselenginerequireslessstartingairthanafour-stroke/cycle dieselengineofequaldisplacementbecausethetwo-stroke/cycledieselengine________.
- Iftheturbochargerofafour-stroke/cycledieselenginefailstooperatewhichof thefollowingstatementsbestdescribestheprobableeffect?.
- Theboilerwateralkalinityinacoil-typeauxiliaryboilershouldbemaintainedat thepHrecommendedbytheboilermanufacturerto.
- Theexhaustgasesinasuperchargedtwo-stroke/cycledieselengineareexpelledfrom thecylinderby_____.
- Valvesinthecylinderheadofadieselengineareopenedbythedirectactionofthe ____.
- Wornmainbearingsinadieselenginecanresultin______________.
- Inadieselengineblow-byisaresultofcombustiongasesleakingintothecrankcase pastthe____________.
- Refrigerantenteringthecompressorofarefrigerationsystemshouldbeinwhichof thefollowingconditions?
- Adisadvantageofatwo-stroke/cycledieselengineis_____________.
- Whenrunningalargelow-speedmainpropulsiondieselengineonheavyfuelwhich ofthefollowingprecautionsshouldbeobservedwhenswitchingbackovertodieseloil?.
- Whenlightingoffanauxiliaryboilerwhichoftheproblemslistedcouldcausethe burnerstosputter?.
- Whenusedwithreversingreductiongearsmedium-speeddieselenginesshouldbebolted totheirfoundationswithfittedboltsatthedriveendandclearancelooselyfitted boltsinotherlocations.Thisisdoneto_____.
- Thecetaneratingofdieselfuelisanindicationofthe________.
- EngineoperatingconditionsmaybeindicatedbythecoloroftheexhaustsmokeBlack smokecouldindicate____.
- Whichofthefollowingstatementsconcerningcylinderlinerwearistrue?
- Theconsistentburningoffueloilwithahighsulfurcontentinadieselenginewill resultin.
- Blackareasonthesealingsurfacesofpistonringsindicate_.
- Themosteffectivemethodinremovingwaterfromdieselfueloilisby_______.
- Turbochargedfour-stroke/cycledieselenginesutilizevalveoverlapfor_________.
- Whenanairstartedfour-stroke/cycledieselengineisbeingcrankedthestarting airisadmittedtoeachcylinderduringwhatwouldnormallybethe.
- Scuffedcylinderlinerwearingsurfacesinadieselenginescanresultfrom________.
- Onefunctionofthethermalexpansionvalveisto________.
- Ifthereliefvalveonadieselenginecylinderliftsthecausecouldbedueto________.
- Inashell-and-tubetypehydraulicfluidcoolertheamountofheattransferredfrom thehydraulicfluidtothecoolingwaterdependsupon.
- Dieselenginemufflersaccomplishnoisereductionby_____.
- Whichofthesubstanceslistedissatisfactorilyremovedfromthefuelbyacentrifugal oilpurifier?
- Whichofthelistedfactorswillindicatethemostabouttheabilityofafueltoignite inadieselengine?
- Ifacrankcaseexplosionoccursinadieselenginewhichofthelistedactionsshould betaken?
- TheconnectingrodisfittedbetweenthecrossheadandthecrankshaftIttransmitsthe firingforceandtogetherwiththecrankshaftconvertsthe_____motiontoa______motion.
- Theadverseeffectsofburninghighsulfurfuelcanbecompensatedforbyusinga cylinderoilhavingsufficient_______________.
- Auxiliaryboilersaredividedintoseveralclassificationsoneofwhichis.
- Inadieselengineblow-byisgenerallytheresultofworn_______.
- Whichofthefollowingproblemsshouldbetakenwhencleaningtheairfilteronadiesel engineequippedwithaturbocharger?.
- Inanoperatingrefrigerationsystemlowonrefrigerantaliquidlinesightglass will______.
- Whichofthefollowingprecautionsmustbetakenifanelectricimmersionheateris usedtokeepthecoolantinadieselenginewarmduringthetimetheengineissecured?
- Ifadieselenginehasbeenstoppedbecauseofpistonseizureduetosevereoverheating thecrankcase_.
- Heavysootaccumulationsinanauxiliaryboilercouldbecausedby.
- Themainpropulsiondieselenginejacketwatertemperaturerisesabovenormalwith therawwaterseasuctionandtheexpansiontankwaterlevelbeingnormalWhichofthe followingproblemsismostlikelythecause?
- Adistortedfurnaceinafire-tubeauxiliaryboilermaybetheresultof.
- Ifyouobservesmokecomingfromtheturbochargerofanauxiliarydieselengineyou should_____.
- Asix-cylindertwo-stroke/cycledieselengineisfittedwitharotarydistributing airstartingsystemThespeedoftherotatingdistributordiscis________.
- Whenairisatitsdewpointitisatits______.
- Pyrometerscommonlyfoundondieselengineexhaustsystemsconsistof________.
- WhenstartingairisadmittedadieselengineturnsoververyslowlywithoutfiringThe causemaybe____.
- Thestaticsuctionheadofisthe______.
- Anincreaseincrankcasepressuregenerallyindicates________.
- Whichoftheconditionslistedcouldcausethecylinderreliefvalvesonalarge low-speedpropulsiondieselenginetolift?