Hyundai Santa Fe (DM): Description and Operation
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 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.
| 1. |
Open Loop air/fuel ratio is controlled by information programmed
into the ECM.
|
| 2. |
Closed Loop air/fuel ratio is adjusted by the ECM based on information
supplied by the oxygen sensor.
|
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). [WCC] [UCC] ...
See also:
Valve Body. Components and Components Location
Component Location 1. Automatic transaxle 2. Valve body assembly 1. Pressure Control Valve(PCV) adjust screw 2. Solenoid valve bracket 3. Oil temperature sensor 4. Line Pressure Control Solenoid Valve ...
Seat belts
This section describes how to use the seat belts properly. It also describes some of the things not to do when using seat belts. Seat belt safety precautions Always fasten your seat belt and make sure ...
Erasing HomeLink® buttons
Individual buttons cannot be erased. However, to erase all three programmed buttons: 1. Press and hold the two outer HomeLink® buttons until the indicator light begins to flash-after 20 seconds. 2. Release ...
