| 摘要 |
PROBLEM TO BE SOLVED: To properly control ignition timing while accurately determining the presence/absence of knocking. SOLUTION: An engine ECU implements a program which includes a step (S210) of determining whether a strength value LOG(V) of N(1)=150 cycle/min or more, e.g., is extracted or not, where N(1) is a natural number, a step (S212) of determining whether an engine speed is in a low speed region, in a medium speed region or in a high speed region when the strength value LOG(V) of N(1) cycle/min or more is extracted (YES in S210), and a step (S214) of setting a correction amount H of a determined value V(KX) to be greater when it is determined to be in the low speed region (low in S212). By comparing the determined value V(KX) with knocking strength, knocking is determined and ignition timing is advanced or delayed. COPYRIGHT: (C)2007,JPO&INPIT |
