2008 Hyundai Coupe Owners Manual

7
EMISSION CONTROL SYSTEMS
EMISSION  CONTROL   SYS-
TEMS
2
SH010A1-E
(Not all models)
DH010B1-E
1. Crankcase Emission  Control
System
When the engine  is running, the fuel
vapors absorbed  in  the canister  are
drawn into the induction system through
the purge control solenoid valve.
Depending upon the market for which
the vehicle  is destined, the emission
control  system will  comprise one  or
more of the following emission control
devices.
The  positive   crankcase   ventilation
(PCV) system is employed to prevent
air pollution caused by blow-by gases
being emitted from the crankcase.
This system supplies  fresh air to  the
crankcase through the air cleaner. In-
side the crankcase, the fresh air mixes
with   blow-by  gases,   then   passes
through the PCV valve into the intake
system.
Purge Control Solenoid Valve
The  purge control  solenoid  valve is
controlled by the ECU (Engine Control
Unit); when  the engine  coolant tem-
perature is  low,  and during  idling, it
closes, so that evaporated fuel  is not
taken into the surge tank. After engine
warm-up,  during  ordinary  driving,  it
opens to introduce evaporated fuel to
the surge tank.
(1)
(2)
(3)
Crankcase  emission control  sys-
tem
Evaporative emission control sys-
tem
Exhaust emission  control system
In order that the proper functioning of
the emission control systems may be
ensured,  it is recommended  that the
vehicle is  inspected  and maintained
by  a Hyundai  authorised repairer  in
accordance   with  the   maintenance
schedule in this manual.
ZH010C1-E
2.
Evaporative Emission
Control System
JH010D1-E
3. Exhaust Emission Control
System
The  Evaporative   Emission  Control
System  is  designed to  prevent  fuel
vapors from  escaping into the  atmo-
sphere.
This  system helps  control oxides  of
nitrogen by  recirculating a portion  of
the  exhaust   gases  into  the  intake
manifold,  thereby  reducing  cylinder
combustion temperatures.
Canister
Whilst the  engine is inoperative, fuel
vapors generated inside the fuel tank
are absorbed and stored in the canis-
ter.
Product Specification
Categories Hyundai Manuals, Hyundai Coupe Manuals
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- 407 pages
Document TypeOwners Manual
LanguageEnglish
Product BrandHyundai, Coupe
Document File TypePDF
CopyrightAttribution Non-commercial
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