| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an operating system for an internal combustion engine, which is configured to operate the internal combustion engine by using a first fuel and a second fuel separated from a mixed fuel and is capable of operating the internal combustion engine, while inhibiting the consumption of a high-octane fuel having a higher octane number, by properly setting the concentration of the high-octane fuel contained in the first fuel. <P>SOLUTION: A fuel separation device 25 is configured to separate the first fuel from the mixed fuel to have a concentration of the high-octane fuel not more than a prescribed upper limit value. The prescribed upper limit is defined that a consumed amount of the high-octane fuel measured under the condition that the internal combustion engine 1 is operated at an operation mode including a state in which a fuel injection amount from a first fuel injection valve 24a for the first fuel is equal to a lower injection amount limit by using the first fuel and the second fuel separated by the fuel separation device 25 is less than a consumed amount of the high-octane fuel measured under at the above operation mode of the internal combustion engine 1 by using the first fuel and the second fuel having the concentration of the high-octane fuel at 100% and 0%, respectively, by a prescribed amount or more. <P>COPYRIGHT: (C)2012,JPO&INPIT |
