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조형제(Hyungjei Cho),김연승(Yoneseung Kim),최광옥(Kwangok Choi),지태한(Taehan Jee) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
To fulfill the future stringent emission legislations, new exhaust gas aftertreatment systems must be developed. The investigations on plasma system started with the aim to test an alternative system for exhaust gas aftertreatment to overcome the catalyst technology limits. Especially due to the lower weight of a passenger diesel car and the lower temperature of exhaust gas, it becomes more difficult to develop the diesel oxidation catalyst system for CO and THC reduction. In this work. the plasma system was tested in order to show the feasibility of diesel emission treatment and research the effects of several parameters. This study shows the plasma system has a potential candidate for diesel emission treatments.
플라즈마 버너를 이용한 복합재생방식 DPF 시스템 개발
지태한(Taehan Jee),송영래(Youngrae Song),조형제(Hyungjei Cho),임기성(Gisung Lim),권해붕(Haeboung Kwon),박용성(Youngsung Park),이정기(Jungki Lee),곽민환(Minhwan Kwak) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As soot particles are loaded in a diesel particulate filter, the filter should be regenerated periodically or continuously in the exhaust system. For the passive DPF system with catalysts, chemical reactions make a continuous regeneration of the filter. But the use of this fully passive DPF system is practically limited to high engine loads condition. Especially for the low engine loads driving pattern, there is no regeneration method in the passive DPF system. The active DPF system with a burner is an attractive alternative because the regeneration of the filter at all the engine condition could be possible. This study describes the development of the active DPF system using a plasma assisted burner regeneration considering the stability of flame, efficiency of the burner and control logic of the system. Engine bench tests are performed to verify these performances of the burner system. Results from these tests show that increased exhaust gas temperature leads to faster regeneration. Also high efficiency of the plasma assisted burner is shown.
곽민환(Minhwan Kwak),용부중(Boojoong Yong),권해붕(Haeboung Kwon),박용성(Yongsung Park),이정기(Jungki Lee),지태한(Taehan Jee),조형제(Hyungjei Cho) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
When the PM in diesel engine out gas are loaded in a DPF system, the DPF filter is needed to regenerate. To find a regenerative solutions, this study describes the effects of catalyst coating quantity on NO₂ conversion and BPT(balance point temperature) characteristics. And the regenerative performance tests for plasma burner are conducted. As a result, the active DPF system with a plasma burner will be a useful method to regenerate the DPF filter especially at low exhaust temperature.