| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To increase temperature of an exhaust heat recovery medium to increase a heat accumulation capacity for recovered heat while increasing exhaust heat recovery efficiency of an engine. <P>SOLUTION: An exhaust heat recovery device includes a control means 22, which can execute a first operation state and a second operation state and which controls to switch between the first operation state and the second operation state. In the first operation state, after engine cooling water W is circulated in an exhaust gas heat exchanger 27, the water is circulated in an engine cooling part 30. The second operation state is any one operation state of: an operation state in which after the engine cooling water W is circulated in the engine cooling part 30, the water is circulated in the exhaust gas heat exchanger 27; and an operation state in which the water is circulated, in parallel, in the engine cooling part 30 and the exhaust gas heat exchanger 27. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
