Kia Optima Hybrid: 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.
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. |
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:
Inspection with GDS Initialization and diagnosis sequence by using GDS equipment. Below content summarize the procedure for A/S using GDS. No.Procedure1Locate vehicle to flat plane2Tire check3IGN1 ON4Head lamp Low Beam ON5Connection with diagnostic tool6Initial command by diagnostic tool7Clear DTC Code8IGN1 ...
Calibration Procedure If the compass has been calibrated or set to variance zone number incorrectly, or you are driving in specific places (tunnel, parking lot in building, underground parking lot, near transformer substation, etc.), the below conditions may occur. • The display read "C". • The compass ...
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