| 摘要 |
The present invention relates to an exhaust gas sensor operating method. The exhaust gas sensor includes at least one heating element for heating an inner measurement cell of the exhaust gas sensor to be at a nominal temperature. A heating output is controlled for stabilizing the temperature of the inner measurement cell. A sensor voltage is set by using an electrical circuit of the inner measurement cell. Output signals irrelevant to the temperature of the exhaust gas are generated according to the present invention, and a Nernst voltage measurement cell capable of being controlled without the electrical circuit is calculated at a first step using the inner sensor resistance and the measured sensor voltage. At a second step, the Nernst voltage calculated at the first step is converted into a Nernst voltage at the nominal temperature. If the difference between the temperature of the measurement cell and the nominal temperature is small, a Nernst voltage at a direct nominal temperature is set. Furthermore, the present invention relates to a device corresponding to the performance of the exhaust gas sensor operating method. The output signals irrelevant to the temperature of the exhaust gas sensor are generated even in the operation steps whereby an actual ceramic temperature of the measurement cell is different from the nominal temperature using the method and the device for the same so that an accurate lambda control of a lambda sensor can be possible by using the exhaust gas sensor. As a result, switching-on conditions of the lambda control can be less restrictively set. Therefore, the lambda control can be activated more frequently, and this can be helpful in reducing energy consumption and reduce the discharge of harmful materials. |
