Hyundai Tucson: Exhaust Emission Control System - 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, intake manifold, camshaft and ignition system consist the basic control system.
These items have been integrated into a highly effective system which controls exhaust emissions while maintaining good drivability and fuel economy.
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).
WCC
Removal and Installation
Catalytic Converter (WCC)
- Remove the exhaust manifold.
(Refer to Engine Mechanical System - "Exhaust Manifold")
Installation
- Install in the reverse order of removal.
Description
The Gasoline Particulate Filter (GPF) system prevents Particulate Matter (PM) from being discharged to the atmosphere and consists of a filter assembly, two Exhaust Gas Temperature Sensors (EGTS).
The filter is integrated in the catalytic converter assembly and has honeycomb cell structure which can filter the PM in the exhaust gas. While the exhaust gas passes the GPF, This gathered PM in GPF is called "soot".
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GPF Regeneration
This procedures is to forcibly regenerate the GPF with scan tool when the GPF
doesn't have been regenerated during driving. For
example, if the vehicle has repeated "Low speed driving" or "Short distance
driving", the GPF
GPF Regeneration - Removal
Removal
Turn the ignition switch OFF and disconnect the battery negative (-)
cable.
Lift up the vehicle.
Remove the floor under cover front RH.
Disconnect the Exhaust Gas Temperature Sensor (EGTS) Front (A) and Rear
(B).
Rem
GPF Regeneration- Description
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 by the engine speed and load.
By controlling CVVT, th
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Changing a tire with TPMS
If you have a flat tire, the Low Tire
Pressure and Position telltales will come
on. We recommend that you have the flat
tire repaired by an authorized HYUNDAI
dealer as soon as possible or replace the
flat tire with the spare tire.
NOTICE
It i
Mass Air Flow Sensor (MAFS)
Description
MAFS uses a hot-film type sensing element to measure the mass of intake air
entering the engine, and
send the signal to ECM.
A large amount of intake air represents acceleration or high load conditions
while a small amount of
in
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual
