| 摘要 |
PURPOSE:To prevent a catalyst supporter from heat damage due to excessive increase of temperature of catalyst, when heated hot, and also prevent the catalyst from damage due to vibration via a heat transmitting member by the effect of exhaust gas which is cooled by a heat exchanger. CONSTITUTION:Since a waste heat recovery device 6, when cool prevents heat disperse of a catalyst 14, it becomes hot by the effect of hot exhaust gas which is fed from an engine 1, thereby performing quick reburning of exhaust gas. When the waste heat recovery device 6 stays hot, exhaust gas which becomes hot due to reburning by the catalyst 14 is heat-exchanged by a heat exchanger R to be cooled to a temperature lower than that of the catalyst 14 and then sent through a connection pipe 45 into a cooling chamber 26 inside an external cylinder 10. The exhaust gas of a relatively low temperature cools the catalyst 14 via an intermediate supporter 15, heat transmission member 25 and a catalyst supporter 15, hence preventing the catalyst 14 and the catalyst supporter 15 from being heated excessively. |
