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:
Water pump. Components and Components Location
Components 1. Water pump pulley 2. Water pump 3. Water pump gasket 4. Water pump housing 5. Water pump housing gasket 6. O-ring 7. Water inlet pipe ...
Seat Belt Pretensioner (BPT). Components and Components Location
Components ...
Engine compartment
Gasoline Engine (Theta II 2.4L) - GDI Gasoline Engine (Theta II 2.0L) - T-GDI ❈ The actual engine room in the vehicle may differ from the illustration. 1. Engine coolant reservoir 2. Engine oil ...
