Kia Optima: 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 pre-programmed into the ECM. |
| 2. | Closed Loop air/fuel ratio is constantly 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).
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See also:
Inspection
1.
Connect the GDS on the Data Link Connector (DLC).
2.
Measure the output voltage of the FTPS.
Specification:
Refer to "Specification"
...
Installation
1.
The key of crankshaft should
be aligned with the mating face of main bearing cap. As a result of this,
the piston of No.1 cylinder is placed at the top dead center on compression ...
If engine turns over normally but
does not start
1. Check fuel level.
2. With the ignition switch in the LOCK
position, check all connectors at the
ignition coil and spark plugs.
Reconnect any that may be disconnected
or loose.
3. Check th ...
Categories
Kia Optima Manuals
- Kia Optima DL3 2019-2026 Owners Manual
- Kia Optima DL3 2019-2026 Service and Repair Manual
- Kia Optima TF 2011-{2019} Owners Manual
- Kia Optima TF 2011-2026 Service Manual
- Kia Optima MS/Magentis 2000-2005 Owners Manual
