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 nitrogen (NOx). ...

See also:

Seat belt warning (for front passenger’s seat)
Type A Type B The front passenger's seat belt warning light will activate to the following table when the ignition switch is in "ON" position. *1 The seat belt warning lig ...

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Components 1. Door module 2. Window glass 3. Outside handle 4.Outside handle cover 5.Door handle pad 6. Door checker 7. Door speaker 8.Hole plug ...

Automatic Transaxle. Repair procedures
Removal 1. Remove the following items; A. Air duct (A) and engine cover (B). (Refer to "Intake and Exhaust system" in EM group. ...