Wide Band Oxygen Sensor - SSANGYONG Korando 2012 Manual

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(7) Wide band oxygen sensor

For diesel engine, combustion is not performed at the optimum (theoretically correct) air-fuel ratio and

the oxygen concentration is thin in most cases. So the wide-band oxygen sensor is used for this kind of

engine, and this sensor is a little different from the one that used for gasoline engine. The combustion in

diesel engine is controlled by fuel injection volume. Therefore, the wide band oxygen sensor should be

used in diesel engine. This sensor measures the air-fuel ratio in very wide range, and is also called full

range oxygen sensor.

The wide band oxygen sensor measures the oxygen density in exhaust gas and sends it to ECU to

control the EGR more precisely.

b. Components

throttle body

Injector (C3I)

Coolant temp.