| 摘要 |
The invention discloses pinking control in a spark-ignition internal combustion engine with a short-time control in which, when pinking occurs, the value of an actual spark timing is retarded (SK) from a predetermined value of a characteristic field ( alpha V) in the direction "ignition retardation". In the absence of pinking, the actual spark timing is advanced to the predetermined value of the characteristic field (FK) in the direction "ignition advance". The invention provides a longtime adaptation whereby, when pinking (K) occurs, the characteristic field value ( alpha V) is reduced or modified by an adaptation value (LZW or LZK) of the pinking limit so that the short-time control is referred to a new predetermined spark timing value or another level ( alpha LZW or alpha LZK). Adaptation values (LZW) are determined or changed only when the internal combustion engine has warmed up or has reached a temperature above a given threshold temperature (TS). At temperatures below the threshold temperature (TS), the adaptation values (LZW) are evaluated and reduced, preferably independently of temperature. The pinking control is thus adapted to a lower pinking tendency of the internal combustion engine after a cold start. |
