| 摘要 |
PROBLEM TO BE SOLVED: To accurately calculate and display a remaining time for cooling by a cooling action with a cold storage unit when an economical running is stopped. SOLUTION: A first remaining time for cooling t×1 is calculated from a remaining cold heat storage amount of a cold storage material in a cooling mode (S100). Then, a second remaining time for cooling t×2 is calculated from variation in the temperature of the cold storage unit, and when the temperature of the cold storage unit rises to an upper limit temperature for cooling, the second remaining time for cooling t×2 is made zero (S110). In the cooling mode, when the temperature of the cold storage unit is lower than temperatures in the vicinity of a setting point of the cold storage material, the first remaining time for cooling t×1 is selected (S120, S130), and when the temperature of the cold storage unit is higher than temperatures in the vicinity of a setting point of the cold storage material, the second remaining time for cooling t×2 is selected (S120, S180). COPYRIGHT: (C)2004,JPO
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