| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a working machine which contributes to enabling an administrator to determine the time to exchange a battery. <P>SOLUTION: A working machine includes an actuator 3 driven by either driving force of an engine 7 or electric energy stored in a battery 15, or by both of the two. The working machine also has: a level of degradation change calculation section 222 which calculates a change in a future level of degradation of the battery based on a current level of the degradation of the battery; a fuel efficiency improvement rate calculation section 223 which calculates the change in a future fuel efficiency improvement rate by the battery based on the change in the level of degradation; a running cost calculation section 224 which calculates the change in a cumulative running cost for respective cases of exchanging the battery with many different types of exchange cycles based on the change in the fuel efficiency improvement rate; and a monitor 23 which displays the changes in the cumulative running cost calculated for the respective exchange cycles of the battery. <P>COPYRIGHT: (C)2012,JPO&INPIT |
