EXHAUST HEAT RECOVERY SYSTEM

摘要

PROBLEM TO BE SOLVED: To lessen the influence of heat of a heat medium and make it possible to switch over between the execution of exhaust heat recovery and the non-execution of exhaust heat recovery.SOLUTION: A heat recovery unit 26 is provided in a second pipe 18 branched off from a first pipe 16 in which exhaust gas from an engine 14 flows. An actuator 36 driving a valve member 34 of the first pipe 16 is disposed in a manner of noncontact with a recovery pipe 32 in which engine cooling water serving as a heat medium flows and the heat recovery unit 26. It is thereby possible to lessen the influence of heat from the engine cooling water on a change in the volume of wax in the actuator 36 by heating the wax by carrying a current.