| 摘要 |
<P>PROBLEM TO BE SOLVED: To decrease power consumption of a pump when an engine is under suspension, and an inverter is driving. <P>SOLUTION: A cooling water circulation path 10 passes an engine 14 and an inverter 12 in series, and cooling water that cools the engine 14 and the inverter 12 circulates. An electric pump 26 makes the cooling water circulate in the cooling water circulation path 10. A bypass path 40 is connected with the cooling water circulation path 10, and makes the cooling water flow bypass the engine 14. A switching valve 42 switches a first state in which the cooling water in the cooling water circulation path 10 does not flow in the bypass path 40 and a second state in which the cooling water in the cooling water circulation path 10 flows in the bypass path 40. An ECU 50 controls the switching valve 42. The ECU 50 makes the switching valve 42 the second state when at least the engine 14 is under suspension and the inverter 12 is driving. <P>COPYRIGHT: (C)2012,JPO&INPIT |
