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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Parking Brake Adjustment
WARNING
After disassembling/assembling the caliper body or replacing the
caliper, parking brake cable or brake
disc, re-adjust the parking brake.
Remove the floor console assembly.
(Refer to Body - "Floor Console Assembly")
For
On vehicle inspection
Inspection
Accelerate the engine to about 3,000 rpm 3 times or more.
Remove the spark plug.
(Refer to Spark Plug - "Removal")
Check the spark plug visually.
If the electrode is dry, the spark plug is normal.
If the
Information
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- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Owner's Manual
- Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual
