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EmissionsControls
Theburningofgasolineinyour
TheCleanAirAct
drawnintotheengineandburned.
vehicle’sengineproducesseveralby-
products.Someofthesearecarbon
monoxide(CO),oxidesofnitrogen
TheUnitedStatesCleanAirAct
＊
setsstandardsforautomobile
emissions.Italsorequiresthat
EvaporativeEmissionsControl
System
(
NOx),andhydrocarbons(HC).
automobilemanufacturersexplainto
ownershowtheiremissionscontrols
workandwhattodotomaintain
them.Thissectionsummarizeshow
theemissionscontrolswork.
Asgasolineevaporatesinthefuel
tank,anevaporativeemissions
controlcanisterfilledwithcharcoal
adsorbsthevapor.Itisstoredinthis
canisterwhiletheengineisoff.After
theengineisstartedandwarmedup,
thevaporisdrawnintotheengine
andburnedduringdriving.
Gasolineevaporatingfromthetank
alsoproduceshydrocarbons.Con-
trollingtheproductionofNOx,CO,
andHCisimportanttotheenviron-
ment.Undercertainconditionsof
sunlightandclimate,NOxandHC
reacttoformphotochemical‘‘smog.’’
Carbonmonoxidedoesnotcontri-
butetosmogcreation,butitisa
poisonousgas.
＊
InCanada,Acuravehiclescomply
withtheCanadianMotorVehicle
SafetyStandards(CMVSS)for
Emissionsvalidatthetimetheyare
manufactured.
OnboardRefuelingVapor
Recovery
Theonboardrefuelingvapor
recovery(ORVR)systemcaptures
thefuelvaporsduringrefueling.The
vaporsareadsorbedinacanister
filledwithactivatedcarbon.While
driving,thefuelvaporsaredrawn
intotheengineandburnedoff.
CrankcaseEmissionsControl
System
Yourvehiclehasapositive
crankcaseventilationsystem.This
keepsgassesthatbuildupinthe
engine’scrankcasefromgoinginto
theatmosphere.Thepositive
crankcaseventilationvalveroutes
themfromthecrankcasebacktothe
intakemanifold.Theyarethen
345
| Categories | Acura Manuals, Acura TL Manuals |
|---|---|
| Tags | Acura TL |
| Model Year | 2007 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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