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차량 주행조건에 따른 DPF의 재생 특성을 예측하기 위한 1-D Simulation 개발
노영창(Young-Chang Noh),박영준(Young-Joon Park),김득상(Duk-Sang Kim),조용석(Yong-Seok Cho),김현옥(Hyun-Ok Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This study predicts regeneration characteristics of Diesel Particular Filter on vehicle driving condition through 1-D simulation. This simulation includes two major algorithm. First, the algorithm of soot loading was designed by preliminary test of pressure drop characteristics according to mass of soot loading and flow rate. Second, the algorithm of regeneration was designed by referencing other result of DPF regeneration. In order to calculate rate of soot oxidation in soot loaded DPF, the simulation uses NOx & O₂ concentration, exhaust gas temperature and exhaust gas flow rate according to engine speed and load condition. At last, mass of soot loading was calculated by incorporating these algorithm. And we verified propriety of the simulation with simple driving mode. Then it is possible that predicting mass of soot loading, pressure drop and regeneration characteristics in DPF according to driving condition. Also real urban driving mode was analyzed using the simulation.
노영창(Young-Chang Noh),유상훈(Sang-Hoon Yoo),박영준(Young-Joon Park),김득상(Duk-Sang Kim),조용석(Yong-Seok Cho) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A diesel engine is more excellent than an SI engine in aspects of specific fuel consumption and CO₂ reduction. But, compliance with emission standards for diesel powered vehicles is likely to require the development of emission control device, such as particulate filters, because diesel engine exhausts much PM and NOx. This paper presents CFD analysis of a two dimensional model for soot distribution according to each pressure drop and predicts what factor is continuous with the distribution in the over wall flow honeycomb DPF.
노영창(Young Chang Noh),박경민(Kyung Min Park),오병걸(Byoung Gul Oh),고민석(Min Seok Ko),김낙인(Nag In Kim) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.4
건설기계 산업에서 배기 및 연비 규제를 만족하기 위하여 엔진 시스템이 점차 전자제어화 되고 있으며, 이를 제어하기 위한 EMS(Engine Management System)의 복잡도 또한 증가하고 있다. 본 연구에서는 EMS function 개발 시, 비용 및 개발기간의 단축을 위한 HiLS(Hardware in the Loop Simulation) 시스템을 개발하였다. HiLS 에 내장된 엔진 모델은 크게 Air, Fuel, Torque 및 동력계 모델로 구성되어있고 실시간 엔진 모사를 위하여 Mean value modeling 방법을 적용하였다. 이 연구를 통하여 개발한 HiLS 시스템은 EGR(Exhaust Gas Recirculation) 시스템과 Turbocharger 가 장착된 건설기계용 디젤엔진을 이용하여 정확성을 검증하였고, 테스트 결과 실 엔진 대비 90% 이상의 정확도를 얻었다. Recently, the portion of electronic control in an engine system is getting increased in order to meet emissions and fuel efficiency of engine system in the construction machinery industry. Correspondingly, complexity of EMS (Engine Management System) is increased. This study developed an engine HiLS system for reducing cost and time during EMS function development. The engine model for HiLS is composed of Air, Fuel, Torque and Dynamometer model. And the Mean value approach is applied to the model. The developed HiLS engine model was validated with heavy duty diesel engine equipped with EGR system and Turbocharger. The test results showed the accuracy better than 90% and it shows feasibility of the virtual calibration process.
노영창(Young Chang Noh),박경민(Kyung Min Park),오병걸(Byoung Gul Oh),고민석(Min Seok Ko),김낙인(Nag In Kim) 대한기계학회 2015 大韓機械學會論文集A Vol.39 No.2
건설기계 산업에서 배기 및 연비 규제를 만족하기 위하여 엔진 시스템이 점차 전자제어화 되고 있으며, 이를 제어하기 위한 EMS(Engine Management System)의 복잡도 또한 증가하고 있다. 본 연구에서는 EMS function 개발 시, 비용 및 개발기간의 단축을 위한 HiLS(Hardware in the Loop Simulation) 시스템을 개발하였다. HiLS 에 내장된 엔진 모델은 크게 Air, Fuel, Torque 및 동력계 모델로 구성되어있고 실시간 엔진 모사를 위하여 Mean value modeling 방법을 적용하였다. 이 연구를 통하여 개발한 HiLS 시스템은 EGR(Exhaust Gas Recirculation) 시스템과 Turbocharger 가 장착된 건설기계용 디젤엔진을 이용하여 정확성을 검증하였고, 테스트 결과 실 엔진 대비 90% 이상의 정확도를 얻었다. Recently, the portion of electronic control in an engine system has been increasing with the aim of meeting the requirements of emissions and fuel efficiency of the engine system in the construction machinery industry. Correspondingly, the complexity of the engine management system (EMS) has increased. This study developed an engine HiLS system for reducing the cost and time required for function development for the EMS . The engine model for HiLS is composed of air, fuel, torque, and dynamometer models. Further, the mean value method is applied to the developed HiLS engine model. This model is validated by its application to a heavy-duty diesel engine equipped with an exhaust gas recirculation system and a turbocharger. Test results demonstrate that the model has accuracy greater than 90 and also verify the feasibility of the virtual calibration process.