Experimental Study on Vehicle Integration of a Compound Regeneration System for Diesel Particulate Filter

A compound regeneration system has shown potential in DPF regeneration. The system consists of FBC, burner and DOC to adapt to high sulfur in China. An aging test of 60,000 km and environmental compatibility test in cold zone, tropical zone and plateau is carried out, with the system integrated on Foton BJ1049V9JD6-SB light duty diesel. Statistics show aging of DPF promotes filtration efficiency because of microstructure change. Both DOC and engine aging are important elements of HC and CO increase. The working effect in cold zone and tropical zone and adaptability of regeneration device in plateau are discussed. The results reflect strong adaptability of regeneration device and discover the main difficulty for system application, which refers to overproof emissions due to aged DOC.