Control method for an exhaust gas purification system and an exhaust gas purification system

The invention claims a tail gas purifying system and control method and tail gas purifying system; the tail gas purifying system with DPF device for tail gas purifying system, relating to the heat of DPF device, wherein the flat according to the forced regeneration of interrupts and a to force to regenerate, a combustion driven disc is PM according DPF separation and product is kept. Moreover, capable regenerate DPF effectively. The forced interrupt regeneration of the flat of a gas separation, there area Rpj of (32C) is examined of the separation there area detection mechanism is a separation number of the rubber-pipe other end is separation Rpj area and separation two regions, or a travel the travel (33C) from the area detection mechanism is Rmj area of the travel distance of the rubber-pipe other end of the guide Rmj area of the travel of region, at least and a side, and a end of the forced to regenerate in the first, wherein the outer flat hole, and forced heat, a time delay force to regenerate the control surplus secondary end of the forced to regenerate.