PM Reduction in Diesel Exhaust Gases with a Photocatalytic DPF Reactor 18ICES/057
Authors
Geon Seog Son - Neophotech Inc.
Cheon Seog Gwak - Neophotech Inc.
Eui Rak Choi - Neophotech Inc.
Kwi Young Lee - Neophotech Inc.
Soongkee Kim - GM Daewoo Auto & Technology
Byoung Chul Coi - Chonnam University
Abstract
In this study, Photocatalyst-Plasma and Honeycomb (PPH) is proposed as an active regeneration system of DPF. For the system, TiO2 photocatalysts are coated on a SiC substrate and non-thermal plasma is generated through the cells to activate the photocatalsyts since major wave lengths of plasma are ultra violet. The characteristics of plasma and photocatalyst activation are checked on a test rig. To show the reality of PPH systems on the reduction of PM emissions, regeneration studies are done on an engine bench with a O-PPH + PP-DPF converter. The system is using the oxidation power of photocatalyst directly on a DPF. For the system, photocatalysts are coated on a SiC DPF (PP-DPF) directly and non-thermal plasma is generated on the cells. The regeneration efficiency is checked with a differential pressure meter measuring pressure between inlet and outlet of the DPF during engine dynamometer tests. During 5 successive mode tests, the differential pressures, temperatures and power consumptions are recorded on a data logger. The results show a good feasibility of PPH system for PM regeneration with lower power consumption without an increasing pressure on the DPF.