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EMISSION CONTROL SYSTEMS
7-1
H010A01A-GAT
EMISSION CONTROL SYSTEM
(Not all models)
Your Hyundai is equipped with an emission
control system to meet all requirements of the
Emission prohibition rules of your province.
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 recommended
that you have your car inspected and main-
tained by an authorized Hyundai dealer in ac-
cordance with the maintenance schedule in this
manual.
ZH000A1-A
7. EMISSION
CONTROL
SYSTEMS
H010B01A-AAT
1. Crankcase Emission Control Sys-
tem
The Positive Crankcase Ventilation System is
employed to prevent air pollution caused by
blow-by gases being emitted from the crank-
case. 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 and into the induction system.
H010D01A-AAT
3. Exhaust Emission Control System
The Exhaust Emission Control System is a
highly effective system which controls exhaust
emission while maintaining good vehicle perfor-
mance.
H010C02A-GAT
2. Evaporative Emission
Control System (Not all models)
The Evaporative Emission Control System is
designed to prevent fuel vapors from escaping
into the atmosphere.
Canister
While the engine is inoperative, fuel vapours
generated inside the fuel tank are absorbed and
stored in the onboard canister. When the en-
gine is running, the fuel vapors absorbed in the
canister are drawn into the induction system
through the purge control solenoid valve.
Purge Control Solenoid Valve
The purge control solenoid valve is controlled
by the ECM; when the engine coolant temper-
ature is low, and during idling, it closes, so that
evaporated fuel is not taken into the engine.
After engine warm-up, during ordinary driving, it
opens so as to introduce evaporated fuel to the
engine.
H020A01A
Catalytic Converter
H020A01A-GAT
CATALYTIC CONVERTER
(Not all models)
The catalytic converter is part of the exhaust
emission control system. Its purpose is to re-
move certain engine emission products from
the engine’s exhaust. It looks something like a
muffler and is located underneath the car in the
exhaust system.
7
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