| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an exhaust heat utilization system for an engine in which a rise of pressure in a circulation passage circulating a heat transport medium can be suppressed and which appropriately heats a warmup portion. <P>SOLUTION: An exhaust heat utilization system 1 for an engine includes an exhaust heat collector 11, supply piping 12, return piping 13, a control valve 14 and an ECU 50. The exhaust heat collector 11 performs heat exchange between the exhaust gas of an engine 20 and a heat transport medium to collect heat from the exhaust gas and evaporates the transport medium. The supply piping supplies the evaporated transport medium from the exhaust heat collector 11 to a crank cap. The return piping returns the transport medium supplied to the crank cap to the exhaust heat collector. The control valve is provided in the return piping 13 and controls a flow of the transport medium. The ECU performs control to close the control valve 14 at latest in a state that the warmup of the engine 20 is completed. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
