Oxygen Sensor
Working Principle of Oxygen Sensor
Oxygen sensor can be used to detect the oxygen
content in the waste gas of engine exhaust pipe for
internal fuel closed loop control of ECU, thus
maintaining engine combustion at the most reasonable
state of air and fuel ratio (14.7).
Appearance of Oxygen Sensor
See the figure below
Technical Parameters
Partially thick limit of air-fuel ratio: ＞750
mVDC
Partially thin limit of air-fuel ratio: ＜120
mVDC
Power of oxygen sensor heater: 7.0W
(The above parameters are measured at
engine bench, the working conditions: exhaust
gas temperature: 450°C; duty cycle: 70%;
10Hz; voltage: 13.5V).
The resistance of heater is: 9.6±1.5Ω (measured at
21°C)
Operating temperature range: 260-850°C
Installation Requirements
Installation angle (angle with the horizontal
plane): ≥10 degrees
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