E 63 AMG Sedan (211.077) V8-6.3L (156.983) (2007)
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ceramic body from mechanical stresses and from temperature jumps.
The balance resistor (6) is dependent on the overall length (L) and on the type of sensor.
While changing the wideband oxygen sensor, the balance resistor is already fitted on the new sensor and must not be changed (resistance depends on the
sensor).
The sensor element consists of a combination of a Nernst concentration cell (sensor cell) and an oxygen pump cell which transports (pumps) the oxygen
ions. The pump action is a purely physical process.
When operating in combination with control electronics which are housed in the ME-SFI [ME] control unit N3/10, the wideband oxygen sensor can be
measured exactly in a further lambda range ( (Lambda) 0.7 to 4.0).
Sensor heating
An integrated sensor heater ensures that it remains at the required operating temperature of approx. 750 °C. In order achieve the sensor function while
the engine is running, wideband oxygen sensors are heated constantly with a heat output of about 10 W.
The sensor heaters are actuated by the ME-SFI [ME] control unit by means of a ground signal.
