| 摘要 |
PROBLEM TO BE SOLVED: To perform a fuel-efficient driving evaluation adapted for an actual driving state through a simple processing also in view of a state in which it is out of the optimal gear stage in reference to a fuel consumption. ! SOLUTION: This invention comprises: an engine; a transmission; a driving time calculation part 10 for calculating a time ranging from starting of the engine to its stopped state; a gear change instruction part 11 for instructing a speed change for the transmission in such a way that the optimum gear stage for the fuel consumption on the basis of a running state of a vehicle may be attained; a gear change instruction display part 12 for displaying the gear change instruction for the transmission by the gear change instruction part; a gear change instruction display accumulative time-calculating part 13 for calculating the gear change instruction display accumulative time from engine starting to its stopped state; a fuel consumption driving evaluation part 14 for evaluati |
