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열선 점화를 이용한 디젤 입자상 트랩의 자력 재생에 관한 수치적 시뮬레이션
정수훈(S. H. Chung),박정규(J. K. Park),정인승(I. S. Chung) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_2
A mathematical model for self-supporting regeneration of diesel particulate filter was developed here in order to describe the processes which take place in the fi1ter after ignition by electric wire heating. The soot is ignited by heating wire at front part of the channel, the flame is propagated and the soot is burned through the channel, In the model, the heating by the electric wire was treated as uniform heat source. Various numerical tests were performed to demonstrate how regeneration factors affect regeneration process and obtain data which need to filter.
세라믹 모노리스 필터 내의 SOOT 포집량 추정 알고리즘의 실제적 적용
손영진(Y.J.Son),서종만(J.M.Seo),윤보숭(B.S.Yoon),정인승(I.S.Chung) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
The development of electronic control unit of particulate trap system using ceramic monolith filter requires a method for estimation of the accumulated mass of . T PM(total particulate malter) to control the proper timing of regeneration so as to avoid the thermal crack due to overloaded soot in the ceramic filter. Darcy's law for low Reynolds' number flow can offer a criterion to predict the accumulate mass of TPM by measuring intake airflow rate. exhaust gas tern perature. and differential pressure between the front and rear side of filter. The control algorithm adopting Darcy's law was evaluated in the engine bed test and vehicle test. The test results demonstrate the control algorithm successfuly predicts the accumulated mass of TPM by referring to look-up tables of pressure loss coefficients calculated for the engine operation conditions according to Darcy's law.<br/>
조경국(K.K.Cho),정인석(I.S.Jeung),정인승(I.S.Chung) 한국자동차공학회 1981 오토저널 Vol.3 No.3
The combustion phenomena of the stratified charged model combustion chamber under the initial conditions of the room temperature and the atmospheric pressure were investigated by using pressure record and high speed Schlieren motion picture in comparison with that of the uniformly charged case.<br/> The results show that the total burning time is strongly dependent on the turbulent spouting flame jet speed which promotes the combustion process inside the chamber, and the pressure rise-up of strntified charged combustion is rather faster and higher than that of uniformly charged combustion, which can be resulted in the energy saving.