Numerical Investigation on Regeneration Performance of DPF

A regeneration model of the Innovation diesel particle filter (DPF) is established by GT-Power software. The influence of flow rate and soot loading on the DPF regeneration performance is numerically investigated. The performance parameters include: filtration pressure drop, substrate temperature, temperature gradient and regeneration efficiency. The results show that: with the increase of flow rate and soot loading, the pressure drop nearly increases linearly; the maximum temperature and maximum temperature gradient are appeared in the end place of DPF channel in middle zone of filter; with the increase of flow rate, the maximum temperature, maximum temperature gradient and regeneration efficiency increase firstly and then decrease; with the increase of soot loading, the maximum temperature and maximum temperature gradient increase rapidly in low soot loading and then increase slowly in high soot loading, while the regeneration efficiency increase firstly and then decrease with the increase of soot loading.