| 摘要 |
PROBLEM TO BE SOLVED: To provide a reducing agent supply device capable of estimating a remaining amount of a reducing agent while preventing the reducing agent supply device from getting larger through a simple configuration and to provide an exhaust gas purification device mounted with the reducing agent supply device and a method for estimating the remaining amount of the reducing agent.SOLUTION: A reducing agent supply device 10 comprises: ammonia occlusion cylinders 11a and 11b; heaters 12a and 12b which externally heat the respective ammonia occlusion cylinders 11a and 11b; and an injection nozzle 13, which is installed in an exhaust pipe 2 between a DPF 4 and an SCR catalyst 5, to supply ammonia. An ECU 21 estimates a remaining amount of the ammonia inside the ammonia occlusion cylinders 11a and 11b on the basis of power consumption of the heaters 12a and 12b. |
