| 摘要 |
<P>PROBLEM TO BE SOLVED: To protect exhaust gas sensors from thermal shocks, in an internal combustion engine control device, wherein an air-fuel ratio feedback control is executed on the basis of detected results at an active state of the exhaust gas sensors and current conduction to heaters is stopped at a point of time elapsed by a designated period from operation stop of the internal combustion engine when the internal combustion engine stops its operation. <P>SOLUTION: The control device 10 sets up timing for stopping current conduction to the heaters 8A, or 9A of the exhaust gas sensors 8, or 9 at either of a point of time developing the setting time set on the basis of a temperature of the open air and a point of time wherein a temperature of coolant in the internal combustion engine 3 is reduced to the designated temperature. <P>COPYRIGHT: (C)2012,JPO&INPIT |
