| 摘要 |
PROBLEM TO BE SOLVED: To improve the cooling performance of a rotary electric machine in a rotary electric machine cooling system regardless of changes of the quantitative relation of discharge amounts of an electrically driven oil pump and a mechanical oil pump.SOLUTION: A rotary electric machine cooling system 10 includes: a second motor generator 20, an electrically driven oil pump 44, and a mechanical oil pump 42 which are mounted on a hybrid vehicle; and a control part 80. The control part 80 includes an oil pump driving control part 68, and the oil pump driving control part 68 compares refrigerant discharge amounts of the mechanical oil pump 42 and the electrically driven oil pump 44 to drive the mechanical oil pump 42 or the electrically driven oil pump 44 as a driving side refrigerant pump. |
