Oxygen Sensor - Daewoo G424 Gasoline Service Manual

Oxygen Sensor

Cover
Sensor device
Stoichiometric ratio
Rich
Air/fuel ratio
Performance of
Three-Way Catalytic Converter
Operating window for converter
Stoichiometric Point
G424 Service Manual
Housing
Lean
6EN2144
CO
CxHy
NOx
Air/Fuel Ratio
6EN2145
Lead wire
The oxygen sensor installed on the exhaust manifold
makes use of the principles of a solid electrolyte oxygen
concentration cell. The oxygen concentration cell is
characterized by a sharp change of the output voltage in
the vicinity of the stoichiometric air/fuel ratio.
Using such characteristics, the oxygen sensor senses
the oxygen concentration in the exhaust gas and feeds
it to the engine control unit. The engine control unit then
determines if the air/fuel ratio is richer or leaner as
compared to the stoichiometric ratio and provides
feedback control to adjust the air/fuel ratio to the
stoichiometric ratio where the emission purification rate
of the three-catalyst convector is optimum.
94 LPG Fuel System(Low Emission Version)
Connector
6EN2146