Kia Cee'd: Exhaust Emission Control System / 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.

Air/Fuel Mixture Control System [Multiport Fuel Injection (MFI) System]

The MFI 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 MFI system.

Exhaust Emission Control System

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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 nit ...

Other information:

Kia Cee'd JD Service Manual: Troubleshooting
Troubleshooting Problem Symptoms Table Use the table below to help you find the cause of the problem. The numbers indicate the priority of the like cause of the problem. Check each part in order. If necessary, replace these parts.   Symptom ...

Kia Cee'd JD Service Manual: Battery Description and operation
Description 1. The MF(Maintenance Free) battery is, as the name implies, totally maintenance free and has no removable battery cell caps. 2. The MF(Maintenance Free) battery does not require water replenishment for the repair. ...