EMISSION CONTROL SYSTEMS
7-2
Purge Control Solenoid Valve
The purge control solenoid valve is controlled
by the ECU; when the engine coolant tempera-
ture 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.
misfire and result in excessive loading of the
catalytic converter.
o Avoid idling the engine for periods longer
than 10 minutes.
o Your Hyundai should not be either pushed
or pulled to get it started. This can cause the
catalytic converter to overload.
o Take care not to stop your Hyundai over any
combustible material such as grass, paper,
leaves or rags.
o Do not touch the catalytic converter or any
other part of the exhaust system while the
engine is running.
o Remember that your Hyundai dealer is your
best source of assistance.
JH010D1-E
3. EXHAUST EMISSION CONTROL
SYSTEM
EGR system ; For a Petrol Engine
This system helps control oxides of nitrogen by
recirculating a portion of the exhaust gases into
the intake manifold, thereby reducing cylinder
combustion temperatures.
YH040A2-E
CATALYTIC CONVERTER
; For a Petrol Engine
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.
YH040B1-E
About the Catalytic Converter
; For a Petrol Engine
Exhaust gases passing through the catalytic
converter cause it to operate at very high tem-
peratures. As a result, the introduction of large
amounts of unburned petrol may cause it to
overheat and create a fire hazard. This can be
avoided by observing the following:
o Use only unleaded fuel.
o Maintain your engine in good condition. Ex-
tremely high converter temperatures can re-
sult from improper operation of the electri-
cal, ignition or M.P.I. system.
o If your engine stalls, pings, knocks, or is
hard to start, take your car to your Hyundai
dealer as soon as possible and have the
difficulty corrected.
o Avoid driving with a very low fuel level. If you
run out of petrol, it could cause the engine to
H020D01S-GAT
CATALYTIC CONVERTER
; For a Diesel Engine
All Hyundai vehicles are equipped with oxida-
tion type catalytic converter to reduce the car-
bon monoxide, hydrocarbons and particulate
contained in the exhaust gas.
H020C01HP-EAT
EGR SYSTEM
; For a Diesel Engine
This system helps control oxides of nitrogen by
recirculating a part of the exhaust gas into the
engine, there by reducing cylinder combustion
temperature.
The EGR system helps reduce Nox (Oxides of
Nitrogen) emission gasses.
Catalytic Converter
H020A01HP
