| 摘要 |
PROBLEM TO BE SOLVED: To provide an air-fuel ratio prediction device of a mixed-fuel vehicle which can quickly estimate an alcohol concentration by performing feedback by using an actual learning value, stopping a purge according to the learning value, and observing a change of the learning value after the stop.SOLUTION: When starting an engine 28A, a first control part 112A acquires a learning value KO2REF by operating a purge execution control part 104A, and if the learning value KO2REF deviates from a preset threshold Kth, the first control part 112A stops a purge once. After the stop, the first control part 112A determines whether or not an alcohol concentration is changed according a change of the learning value KO2REF, and selects a fuel injection map part adapted to the alcohol concentration. |
