| 摘要 |
PROBLEM TO BE SOLVED: To suppress the lowering of fuel economy.SOLUTION: A fluid temperature control device comprises: a first heat exchanger 5 which can perform heat exchange between engine oil and transmission oil; a second heat exchanger 6 which can perform heat exchange between engine cooling water and the transmission oil; a first flow regulator 40 which regulates a flow-in amount of the engine cooling water to the second heat exchanger 6; and a second flow regulator 50 which regulates a flow-in amount of the engine oil to the first heat exchanger 5. When a water temperature of the engine cooling water is lower than a water temperature at the finish of the warmup of an engine ENG, the first flow regulator 40 decreases the flow-in amount of the engine cooling water to the second heat exchanger 6 compared with the case that the water temperature of the engine cooling water is equal to or higher than the water temperature at the finish of the warmup, and when an oil temperature of the transmission oil is equal to or higher than an oil temperature at the full-warmup of a drive system, the second flow regulator 50 decreases a flow-in amount of the engine oil to the first heat exchanger 5 compared with the case that the oil temperature of the transmission oil is lower than the oil temperature at the full-warmup of the drive system.SELECTED DRAWING: Figure 1 |
