| 摘要 |
In an exhaust gas purification system 1 in which a DPF 19b is disposed in an exhaust passage 13 of an internal combustion engine 10, a surface filtration cake layer formation enhancement control or a PM generation amount reduction control is temporarily performed immediately after a forced regeneration treatment on the DPF 19b. Thus, an exhaust gas purification system and an exhaust gas purification method are provided which are directed to a PM slip-through phenomenon in which the PM slip-through amount temporarily increases immediately after PM re-combustion in a forced regeneration treatment on the DPF in the exhaust gas purification system comprising the DPF disposed in the exhaust passage of the internal combustion engine, and which reduce the total amount of PMs emitted to the atmosphere by reducing the total amount of PMs emitted to the atmosphere immediately after the PM re-combustion in the forced regeneration treatment on the DPF. |
