| 摘要 |
<P>PROBLEM TO BE SOLVED: To decrease fuel gas concentration in exhaust gas to a prescribed reference value or lower. <P>SOLUTION: A dilution device 50 is installed at meeting point A of an exhaust passage 37 through which fuel offgas is intermittently exhausted and an exhaust passage 23 of oxidative offgas, or its upstream side, and equipped with an expansion and contraction vessel 52 expanding or contracting the inner volume according to the gas pressure on the inside and an elastic body 53 installed adjacently to the expansion and contraction vessel 52, and the expansion and contraction vessel 52 has a fuel offgas introduction port 52a communicating with the upstream side of the exhaust passage 37 and a fuel offgas exhaust port 52b communicating with the downstream side of the exhaust passage 37 or an exhaust passage 23, and the elastic body 53 adds recovering force corresponding to the expansion of the inner volume of the expansion and contraction vessel 52 to the expansion and contraction vessel 52. <P>COPYRIGHT: (C)2008,JPO&INPIT |
