| 摘要 |
According to the present invention, an exhaust purification device for an internal combustion engine (11) is provided with a storage catalyst (21), a sensor (23) and a determination unit (30). The storage catalyst (21) stores predetermined components of the exhaust gas via a storage reaction wherein the predetermined components react with a storage material. The sensor (23) detects information that changes in response to the state of the storage reaction. The determination unit (30) determines a state immediately preceding saturation on the basis of the output of the sensor (23). The state immediately preceding saturation means a state in which the storage amount of the storage catalyst (21) is approaching saturation and the storage reaction is in decline. |
