Abstract
This study examined a diesel particulate filter (DPF) system as a future diesel exhaust control technology, focusing in particular on regeneration performance that is always an issue when a filter is used. Two regeneration methods were examined, one using NO2 and the other using O2. For the method employing O2, it found that the amount of PM accumulation and oxygen concentration are important factors in filter regeneration; for the method using NO2, it was found that the balance between NO2 and PM at the DPF inlet is important. Furthermore, an aftertreatment system incorporating a DPF was combined with a Modulated Kinetics (MK) diesel engine with the aim of substantially improving the trade-off between NOx and PM due to the lower pre-mixed combustion temperature. It was found that an ultra-clean diesel engine system can be built with this