Hyundai Accent: Description and Operation

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 form 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.

The GDI system uses signals from the heated oxygen sensor to activate and control the injector installed in the manifold for each cylinder, thus precisely regulating the air/fuel mixture ratio and reducing emissions.

This in turn allows the engine to produce exhaust gas of the proper composition to permit the use of a three way catalyst. The three way catalyst is designed to convert the three pollutants [hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx)] into harmless substances. There are two operating modes in the GDI system.

Exhaust Emission Control System

...

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). ...

See also:

Power Door Lock Actuators. Repair procedures
Inspection Front Door Lock Actuator Inspection 1. Remove the front door trim. (Refer to the BD group - "Front door") 2. ...

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 ref ...

Components and Components Location
Components Location [Vehicle Components] 1. Automatic transaxle 2. Transaxle control module (TCM) 3. Shift lever 4. (DLC) [Transaxle Components ...