DPF Soot Loading Estimation Strategy Based on Pressure Difference

The China V emission standard for light duty vehicles, starting to be effective from January 1, 2018, is the first time to set particulate number (PN) emission limits. This necessitates diesel particulate filters (DPFs) to be equipped for diesel powered pick-up trucks. A DPF soot load estimation model based on the DPF pressure drop is established to support the regeneration time selection and DPF applications and management. The accuracy of the model is validated through the engine dynamometer testing and on-vehicle road tests.