To provide an exhaust gas reforming system accurately starting a recovering operation or a reforming operation while improving the fuel economy of an internal combustion engine.
A first exhaust gas reforming system (300) includes: an air-fuel ratio adjusting means (40) for adjusting the air-fuel ratio of exhaust gas of the internal combustion engine (10); a reforming means (100); a heating temperature detecting means (170) for detecting the temperature of a heating medium required for heating a reforming chamber; a catalyst bed temperature detecting means (175); and a control means (200) for controlling the air-fuel ratio adjusting means (40) and a fuel injection means so that the reforming operation is stopped and the recovery operation for recovering a catalyst from catalyst poisoning based on the detection result of the heating temperature detecting means and the detection result of the catalyst bed temperature detecting means after the air-fuel ratio adjusting means and the fuel injection means are controlled to start the reforming operation for generating reforming gas from the reforming chamber.
COPYRIGHT: (C)2010,JPO&INPIT
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Toshiyuki Hatta
High Yoshitaka Hayashi