Development and In-Field Application of a New Type of Partial Filter System for Diesel Retrofit

This paper describes the development and in-field application of a new type of metallic partial filter. The unique design of the filter is described. The performance of a complete system, consisting of an oxidation catalyst upstream of the new partial filter, is described, demonstrating the ability of the system to achieve over 70% particulate matter (PM) conversion. Finally, a field demonstration of the system retrofitted to different vehicles running in Seoul is described, demonstrating the performance and physical durability of the system is retained over 30,000 km of real-world operation.