| 摘要 |
PROBLEM TO BE SOLVED: To provide a controller for gas concentration sensor that can accurately control the concentration of a gas to be detected even when noise is superimposed upon a detected element resistance value. SOLUTION: This controller for a gas concentration sensor which outputs the current signal corresponding to the concentration of the gas to be detected limits the variation of the element resistance detected by means of the gas concentration sensor. Consequently, it is prevented that the noise produced from the operating state of an internal combustion engine or the wired state of sensor signals is superimposed upon the detected element resistance value and makes the resistance value largely different from its true value. |
