《汽车专业英语》-1.9 Starting System 1

ReviewtheimportantWordsignitionvoltageprimarysecondarybatteryrotorvaccumcondenserresistordistributorscrew

electromagneticmagneticcableterminalinsulator

PhrasesandExpressionsignitionsystemsparkplugignitionswitchprimarywindingbreakerpointdistributorcapdistributorrotorsecondarywindingstoragebatteryironcoreelectromagneticfieldsecondarycoilmagneticfieldfiringorderdistributorcamadjustingscrewcentreelectrodeearthelectrode

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Whatisthefunctionoftheignitionsystem?Theignitionsystemistocreateanelectricsparkwithhighvoltage,sothatignitestheair-fuelmixture.

ChapterOneEngine

1.9StartingSystem

StudytheimportantWordscurrentrelaysuctionsolenoidplungerbrusharmatureyoketorqueengagedisengagecommutatorconductorshunt

PhrasesandExpressionsstartingsystemneutralsafetyswitchstarterrelaystartermotorstartersolenoidstarterdrivepull-incoilholdingcoiloverrunningclutchpiniongearcrankingmotorringgearfieldcoilshiftleverheavycurrentshuntcoilseriescoilclutchpedal

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Startingsystemistheheartoftheelectricalsystemintheautomobile,beginswiththebattery.Thekeyisinsertedintotheignitionswitchandthenturnedtothestartposition.

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Basically,thissystemincludesthefollowingcomponents:battery,ignitionswitch,startermotor,startersolenoid,starterdrive,cablesandwires.

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StarterRelay

Thestarterrelayisanelectromechanicaldevicethatswitcheselectricalcircuitsonandoff.Itisusedtostartandstoptheheavycurrentthatflowtothestartermotorduringcranking.

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ArmatureArmatureinastartingmotorisarotationalpartthathasmanyloopsofwirewithacommutator.

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Startermotororcrankingmotorelectricallycrankstheengineforstarting.Crankingtheenginemeanstorotatethecrankshaftbyapplyingtorqueonitsothatthepistonmaygetreciprocatingmotion.

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DrivePinionDrivepinionisalsocalledpiniongear.Asthestartersolenoidworks,itwillshiftthedrivepiniontomeshwiththeflywheelringgear.

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Thestartermotorthencrankstheenginesothatthepiston,movingdownward,cancreateasuctionthatwilldrawaair-fuelmixtureintothecylinder,whereasparkcreatedbytheignitionsystemwillignitethismixture.

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NeutralSafetySwitchNeutralsafetyswitchinstalledattheautomatictransmission(AT),(orattheclutchpedal).Itpreventsthestartingsystemfromopeningwhentheautomobile’stransmissionisingear.

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Asmallamountofcurrentthenpassesthroughtheneutralsafetyswitchtoastarterrelaywhichallowshighcurrenttoflowthroughthebatterycablestothestartermotor.

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Startermotor′scomponents:startersolenoid,fieldcoil,armature,brush,commutator,shiftlever,drivepinion,overrunningclutch.

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BrushBrushisusedtomakeelectricalcontactbetweentherotatingarmatureandthestationarybattery.

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Thestartingmotorismountedontheengineflywheelhousing.Thestartingmotorislinkedtotheengineflywheelthroughasetofgears.Apiniongearisattachedtothestarterarmaturewhichdrivesaringgearattachedtotheflywheel.

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SolenoidThesolenoidisamagneticswitchmountedontopofthestartermotor.Ithastwoimportantfunctions:itcontrolstheelectricalcircuitbetweenthebatteryandstartermotoranditshiftsthepiniongearinandout,andthenmesheswiththeringgear.

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NeutralSafetySwitchWhentheautomatictransmissionisnotin“Park”or“Neutral”(orwhenthec