| 摘要 |
PROBLEM TO BE SOLVED: To suppress worsening of knock determination accuracy due to the influence of noise caused by operation of an injector. SOLUTION: Under engine operation condition in which a knock determination period of default setting is overlapped on a fuel injection period from the injector, the knocking determination period is made shorter than the default setting, and a fuel injection time and the knocking determination period are set by relating them mutually to eliminate overlapping of the fuel injection period and the knocking determination period. Consequently, it is possible to avoid that noise generated by operation of the injector rides on an output signal of a knocking sensor in the knocking determination period and suppress reduction of knocking determination accuracy caused by the noise. COPYRIGHT: (C)2004,JPO&NCIPI
|
