The evaluation of fuel borne catalyst (FBC’s) for DPF regeneration

• FBC additives containing iron, cerium zinc, potassium and cobalt were evaluated.
• Bench test for the evaluation of the FBC additives effectiveness was evaluated.
• Based on the tests results, the two most effective additives were manufactured.

Even though diesel particulate filters (DPFs) have been in commercial production for many years, there is still much optimisation activity, especially in the field of the regeneration strategy of these filters.A method for obtaining organosoluble substances with an iron content of 10–15 wt% and composition containing iron additives and other selected substances has been developed. These organosoluble substances form the basis for the development of various additives of the fuel borne catalyst (FBC) type for passive regeneration of DPF’s.To test and evaluate the effectiveness of the regeneration process supported by the developed FBC additives, a novel multistage procedure consisting of three separate engine tests, which allow a comprehensive examination of additives, has been implemented. Each additive had been rated in this engine procedure at different dosage levels in a specified order. This rating allowed reliable assessment of the operational properties of the additives under the conditions of dynamometer engine testing.As a result, from a wide range of FBC-type additives developed and then rated in the engine bench test procedure, the best two additives were selected. These additives achieved a much better operational performance than the commercial additives from two of the reputed manufacturers.The studies that we have performed present evidence of the high operational performance potential of FBC additives in the effective passive regeneration supporting of DPF’s.