Functional description
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The ethanol sensor measures the ethanol content and temperature of the fuel. The dielectric conductivity (= conductivity of a material regarding electrical fields) as well as the electrical conductivity and temperature are determined to achieve a result. After the ethanol content has been calculated, it and the temperature are communicated to the engine management ECU by means of a PWM signal.
2 electrodes form a sensor cell that detects the dielectric conductivity when a current is applied.
| Item | Explanation |
|---|---|
| 1 | Ethanol sensor |
| 2 | three-pin plug connection |