7
EMISSION CONTROL SYSTEMS2
EMISSION CONTROL SYSTEM
H010B01A-AAT1. Crankcase Emission Control
SystemThe positive crankcase ventilation system
is employed to prevent air pollution caused
by blow-by gases being emitted from the
crankcase. This system supplies 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 and into the induc-
tion system.
H010A01NF-AATYour Hyundai is equipped with an emis-
sion control system to meet all emission
regulations.
There are three emission control systems
which are as follows.
(1) Crankcase emission control system
(2) Evaporative emission control system
(3) Exhaust emission control system
In order to assure the proper function of the
emission control systems, it is recom-
mended that you have your car inspected
and maintained by an authorized Hyundai
dealer in accordance with the maintenance
schedule in this manual.
Caution for the Inspection and Mainte-
nance Test (With Electronic Stability
Control (ESC) system)
o To prevent the vehicle from misfiring
during dynamometer testing, turn the
Electronic Stability Control (ESC) sys-
tem off by pressing the ESC switch.
o After dynamometer testing is com-
pleted, turn the ESC system back on
by pressing the ESC switch again.
H010C01S-AAT2. Evaporative Emission Control (In-
cluding ORVR: Onboard Refuel-
ing Vapor Recovery) SystemThe Evaporative Emission Control Sys-
tem 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 va-
pors into the atmosphere.)CanisterFuel vapors generated inside the fuel tank
are absorbed and stored in the canister.
When the engine is running, the fuel va-
pors absorbed in the canister are drawn
into the induction system through the purge
control solenoid valve.
