| 摘要 |
<p>The apparatus for judging on deteriorations of a catalyst device and an oxygen content sensing device according to the present invention includes: a cooling water temperature sensing member for sensing a cooling water temperature, a throttle valve opening degree sensing member for sensing a throttle valve opening degree, an engine revolution speed sensing member for sensing an engine revolution speed, a catalyst device for purifying harmful exhaust gases (discharged through an exhaust tube) into non-harmful gases based on oxidizing and reducing reactions, a first oxygen content sensing member installed on a discharge tube in front of the catalyst device, to output relevant signals by sensing an oxygen content of exhaust gases for an air fuel ratio feedback control operation, a second oxygen content sensing member installed on an exhaust tube behind the catalyst device for judging a deterioration of the catalyst device, and for sensing an oxygen content of the exhauts gas (which has passed through the catalyst device), an automobile velocity sensing member for sensing an automobile velocity, and an idle switch for sensing an idle state of an engine.</p> |
