| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve reforming efficiency in a reformed gas internal combustion engine, by disposing a low temperature reforming part to a reforming part utilizing exhaust heat. <P>SOLUTION: In an internal combustion engine acquiring reformed gas containing hydrogen by executing steam reforming of reforming raw material, the low temperature reforming part 30, such as a Cu catalyst, high in reforming efficiency and lower in upper limit of activation temperature than a normal exhaust gas temperature is adopted, and ether or both of a high temperature reforming part 32 or/and a supercharger 50 using a catalyst higher in upper limit of the activation temperature than the low temperature reforming part 30 or/and a supercharger 50 is disposed to the upstream of an exhaust passage. Since the high temperature reforming part 32 is disposed upstream of the exhaust passage, an exhaust gas temperature can be decreased by utilizing the exhaust heat for the steam reforming as endothermic reaction. Since the supercharger 50 is disposed upstream the low temperature reforming part 30, thermal energy of exhaust gas is surely deprived to decrease an exhaust temperature, heat deterioration of the low temperature reforming part 30 is prevented and, at the same time, supercharging of air to an intake pipe 20 is executed so as to obtain high output. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
