| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a structure capable of reducing exhaust pressure losses and manufacturing costs by providing a built-in catalyst without complicating an exhaust gas passage. <P>SOLUTION: An engine exhaust gas heat exchanger 1, which performs recovery of the heat between the engine exhaust gas and an engine coolant, includes a built-in engine exhaust gas purification catalyst 2. The engine exhaust gas purification catalyst 2 is arranged on an exhaust gas flow passage in an exhaust gas inflow section, and a part or the whole of the catalyst 2 is housed in a housing member 3 provided with a plurality of nozzle holes 30 in a peripheral wall thereof facing an inner wall 41 of the heat exchanger 4, and an engine coolant passage is formed between the inner wall 41 of the heat exchanger 4 and the outer wall 42 of the heat exchanger 4. A catalyst support 21, which is bonded to the periphery of the catalyst 2, is provided with one or more cutouts 21b that allow gas to pass through. This energy supply device uses the engine exhaust gas heat exchanger 1 in the exhaust gas passage of the engine. <P>COPYRIGHT: (C)2011,JPO&INPIT |
