Oxygen sensor

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Oxygen sensor

1- please any body tell me ho i can know is my engine type
WU TWC equipped or not (Warm Up Three-Way Catalytic Converter)?????

my car baleno 1998 engine G13BB

2- what the diiferent between oxygen sensor and heated oxygen sensor

3- is my car contain oxygen sensor???? if yes please where the oxygen sensor in my picture???

What is the name of the piece found in the red circle No. 1

Gari.pk User 3136 asked on 01 Jul 2010 13:30:56 pm

1 Answer

317 views |

Zayan - on 01 Jul 2010 13:31:07 pm

Heated oxygen sensors have an internal heater circuit that brings the sensor up to operating temperature more quickly than an unheated sensor. An oxygen sensor must be hot (about 600 to 650 degrees F) before it will generate a voltage signal. The hot exhaust from the engine will provide enough heat to bring an O2 sensor up to operating temperature, but it make take several minutes depending on ambient temperature, engine load and speed. During this time, the fuel feedback control system remains in "open loop" and does not use the O2 sensor signal to adjust the fuel mixture. This typically results in a rich fuel mixture, wasted fuel and higher emissions.
By adding an internal heater circuit to the oxygen sensor, voltage can be routed through the heater as soon as the engine starts to warm up the sensor. The heater element is a resistor that glows red hot when current passes through it. The heater will bring the sensor up to operating temperature within 20 to 60 seconds depending on the sensor, and also keep the oxygen sensor hot even when the engine is idling for a long period of time.

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