Maintenance
9-72
Emission Control System
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained in the Owner's
Handbook & Warranty Information
booklet in your vehicle.
Your vehicle is equipped with an emission
control system to meet all applicable
emission regulations. There are three
emission control systems, as follows:
• Crankcase emission control system
• Evaporative emission control system
• Exhaust emission control system
In order to ensure the proper function of
the emission control systems, it is
recommended that you have your vehicle
inspected and maintained by an
authorized HYUNDAI dealer in
accordance with the maintenance
schedule in this manual.
For the Inspection and Maintenance Test
(with Electronic Stability Control (ESC)
system)
• To prevent the vehicle from misfiring
during dynamometer testing, turn the
Electronic Stability Control (ESC)
system off by pressing the ESC switch
(ESC OFF light illuminated).
• After dynamometer testing is
completed, turn the ESC system back
on by pressing the ESC switch again.
Crankcase emission control
system
The positive crankcase ventilation system
is employed to prevent air pollution
caused by blow-by gases being emitted
from the crankcase. This system supplies
fresh filtered air to the crankcase through
the air intake hose. Inside the crankcase,
the fresh air mixes with blow-by gases,
which then pass through the PCV valve
into the induction system.
Evaporative emission control
system including Onboard
Refueling Vapor Recovery
(ORVR)
The Evaporative Emission Control System
is designed to prevent fuel vapors from
escaping into the atmosphere. The ORVR
system is designed to allow the vapors
from the fuel tank to be loaded into a
canister while refueling at the gas station,
preventing the escape of fuel vapors into
the atmosphere.
Canister
Fuel vapors generated inside the fuel tank
are absorbed and stored in the onboard
canister. When the engine is running, the
fuel vapors absorbed in the canister are
drawn into the surge tank through the
purge control solenoid valve.
Purge Control Solenoid Valve (PCSV)
The purge control solenoid valve is
controlled by the Engine Control Module
(ECM); when the engine coolant
temperature is low during idling, the
PCSV closes so that evaporated fuel is not
taken into the engine. After the engine
warms-up during ordinary driving, the
PCSV opens to introduce evaporated fuel
to the engine.
Hyundai_SX2_en_US.book Page 72
To Next Page
Loading...
Need help?
General
