Control device for adjusting first and second fuel ratios

A control device for an internal combustion engine, the control device comprising:

• an engine control unit being configured to:
• calculate a first level ratio of an amount of a first fuel stored in a first tank to a full tank capacity of the first tank;
• calculate a second level ratio of an amount of a second fuel stored in a second tank to a full tank capacity of the second tank, an octane number of the second fuel being higher than an octane number of the first fuel;
• adjust a first fuel ratio of the first fuel in a supplied fuel which is supplied to the internal combustion engine and a second fuel ratio of the second fuel in the supplied fuel based on a degree of deviation between the first level ratio and the second level ratio such that the degree of deviation is within a predetermined range;
• and
• control an injection valve based on the adjusted first fuel ratio or the adjusted second fuel ratio.

A control device for an internal combustion engine, the control device comprising:

• a first level ratio obtaining means for calculating a first level ratio of an amount of a first fuel stored in a first tank to a full tank capacity of the first tank;
• a second level ratio obtaining means for calculating a second level ratio of an amount of a second fuel stored in a second tank to a full tank capacity of the second tank, an octane number of the second fuel being higher than an octane number of the first fuel;
• and
• an adjusting means for adjusting a first fuel ratio of the first fuel in a supplied fuel which is supplied to the internal combustion engine and a second fuel ratio of the second fuel in the supplied fuel based on a degree of deviation between the first level ratio and the second level ratio such that the degree of deviation is within a predetermined range, wherein
• the control device is configured to control an injection valve based on the adjusted first fuel ratio or the adjusted second fuel ratio.