| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that, in a vehicle packaging high-octane fuel and low-octane fuel therein, the high-octane fuel is used for canceling knocking but since it is necessary to invest the high-octane fuel equal to or more than required for actual knocking cancellation, efficiency is not high in some cases.SOLUTION: An engine system comprises a high-octane fuel tank, a low-octane fuel tank, a high-octane fuel injector communicated with the high-octane fuel tank, a low-octane fuel injector communicated with the low-octane fuel tank, a knocking sensor, and a control device connected with the knocking sensor, the high-octane fuel injector and the low-octane fuel injector. When knocking is detected, the control device performs control to retard ignition timing by increasing a ratio of fuel injection from the high-octane fuel injector. |
