Regeneration Behavior of Ceramic Foam Particulate Trap for Automotive Diesel Engines 891243
A ceramic foam particulate trap for reducing automotive diesel engine particulate emission was developed. With its trapping efficiency 50-70 %, the trap is also reliable and durable. However, under practical automotive cruising conditions with exhaust temperature 400-650 K, particulates deposited in trap element cannot be burned up spontaneously to regenerate the element. The thermal regeneration temperature is 750-800 K. Adding organic compounds of copper, cerium or other metals in diesel fuel in concentrations 0.1-0.2 g/L (on the effective metal ion basis) reduces the regeneration temperature by about 100 K which is not enough to make the trap regenerate reliably in practical automotive application of particulate trap. A Simple diesel fuel burner developed regenerated the ceramic element completely in 1-3 minutes, providing a promising future for the practical utilization of the diesel particulate trap.
Ji Yu, Liu Xunjun, Xiao Zongcheng, Xu Yun, Zhang Hua
Jilin University of Technology China
5th International Pacific Conference on Automotive Engineering