Hyundai Santa Fe: 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 nitrogen (NOx)...

Other information:

Hyundai Santa Fe (TM) 2019-2025 Owner's Manual: Limitations of the system

Reverse Parking Collision-Avoidance Assist may not assist braking or warn the driver even if there are pedestrians or objects under the following circumstances: Any non-factory equipment or accessory is installed Your vehicle is unstable due to an accident or other causes Bumper height or rear ultrasonic sensor installation has been modified Rear view camera or rear ultrasonic sensor(s) is damaged Rear view camera or the rear ultrasonic sensor(s) is stained with foreign material, such as snow, dirt, etc...

Hyundai Santa Fe (TM) 2019-2025 Service Manual: Components and components location

Component Location (1) 1. Integrated Body Control Unit (IBU) 2. Buzzer 3. Door outside handle 4. Interior antenna 2 5. Door module antenna 6. Interior antenna 1 Component Location (2) 1...