| 摘要 |
A misfire detecting method wherein, when a judgement that an internal combustion engine is operated in a special condition in which a load on the internal combustion engine suddenly varies is made, the detection of misfire is prohibited, to prevent the occurrence of erroneous detection. When a judgement that the current time is immediately after an engine has been started is made (S3), or when a judgement that the current time is immediately after an ignition key has been turned off is made (S4), or when a judgement that a deceleration operation of the engine, a speed changing operation of a transmission or the rough load running of a vehicle is carried out is made (S5-S7), a processor repeatedly performing misfire detecting processes aborts a misfire detecting process in the present cycle immediately to avoid the occurrence of erroneous detection which is liable to happen when the vehicle runs on a rough road and so on. <IMAGE> |
