| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent damages on a turbine blade of a turbocharger and to efficiently reform a part of fuel into hydrogen by use of a reforming catalyst with an addition of a relatively small amount of the fuel from a fuel addition means to the reforming catalyst. <P>SOLUTION: A reforming catalyst 24 disposed in an exhaust manifold 17 reforms a fuel 25 of an engine 11 into hydrogen; while a fuel addition means 27 supplies the fuel to the reforming catalyst. A selective reduction type catalyst 39 disposed in an exhaust pipe 18 at a downstream side of the exhaust gas than a turbine housing 19b of a turbocharger 19 reduces NOx in the exhaust gas by using the hydrogen as a reducing agent. A waste gate valve 52 disposed in a bypass pipe 51 that bypasses the turbine housing adjusts opening of the bypass pipe to adjust a flow volume of the exhaust gas flowing into the turbine housing. A controller 61 controls the fuel addition means based on the operation condition of the engine and also controls the waste gate valve based on the detection output of a temperature sensor 53 that detects an entrance temperature of the turbine housing. <P>COPYRIGHT: (C)2013,JPO&INPIT |
