Hyundai Sonata: Catalytic Converter. Description and Operation
Description
The catalytic converter of the gasoline engine is a three way catalyst.
It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from
the oxides of nitrogen (NOx).
There are two types of three-way catalyst; Palette type and Monolith type.
[SULEV]

[ULEV]

Description and Operation
Description
Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine
modifications and the addition of special control components.
Modifications to the combustion chamber, ...
CVVT (Continuously Variable Valve Timing) System. Description and Operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the
valve timing of the intake and exhaust valve in accordance with the ECM control
signal which is calculated ...
See also:
Air bag warning label (if equipped)
Air bag warning labels, some required by the U.S. National Highway Traffic Safety
Administration (NHTSA), are attached to alert the driver and passengers of potential
risks of the ...
Changing the coolant
Have coolant changed by an authorized HYUNDAI dealer according to the Maintenance
Schedule at the beginning of this section.
CAUTION
Put a thick cloth or fabric around the radiator cap before refi ...
Normal maintenance schedule
The following maintenance services must be performed to ensure good emission
control and performance. Keep receipts for all vehicle emission services to protect
your warranty. Where both mileage a ...
