Kusinthikanso kwa Passve: Chonyamulira cha DPF chakutidwa ndi chosanjikiza chachitsulo chamtengo wapatali.Pansi bwino kutentha, ndi NO2 opangidwa ndi DOC unit amachitira mankhwala ndi C mu DPF, ndi equation mankhwala anachita motere.
C+2 NO2=CO2+2 AYI
C+O2=CO2
Ma equation of chemical reaction pakuchotsa CO ndi HC mu gawo la DOC
4HC+5O２= 2H2O+4CO
SQF+O2=H2O+CO
2CO+ O2= 2 CO2
2 NO+O2= 2 NO2
C+O2=CO2
