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DoE를 이용한 승용디젤엔진의 Emission 매핑 최적화
조청훈(Chunghoon Jo),윤금중(Kumjung Yoon) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
To cope with the more stringent emission regulations, now diesel engines for passenger car adopt various tools like variable geometry Turbocharger, EGR, variable swirl system and multiple injection FIE system. On the other hands, these new tools cause difficulties to optimize so many mapping parameters which affect performance and emissions, at the same time. This paper presents the process of mapping optimization using DoE method and optimized result of passenger car diesel engine.
저압 EGR 시스템을 이용한 V6 3.0ℓ엔진의 연비 최적화 개발
이해욱(Haewook Lee),조청훈(Chunghoon Jo),남기훈(Kihoon Nam),이세영(Seyoung Lee),이은현(Eunhyun Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
As the markets require more environmentally friendly and high fuel consumption vehicle, we have to satisfy bilateral target. Though many new after-treatment techniques like LNT, SCR are investigated to meet both strong emission regulations and low fuel consumption, high cost of these techniques should be solved to adopt widely. This paper describes how to optimize the dual loop EGR as a tool to reduce CO2 emission of a HSDI diesel engine in the passenger car application. Focus is not only on the optimization to obtain the maximum CO2 reduction but also on how to assess and overcome various side effects. As a result of careful optimization, as much as 6% CO2 reduction was achieved by introduction of low pressure EGR loop, maintaining the same boundary conditions as those with high pressure EGR loop only. Not only the dual EGR system but also further improvement was applied such as combustion improvement, friction reduction and many others to achieve as much as 20% total CO2 reduction. The dual loop EGR was proven to be an effective solution to reduce CO2 and therefore it is considered to be one of the core technologies in the passenger diesel applications of Hyundai-Kia Motors to meet the future CO2 regulation.
이해욱(Haewook Lee),추정범(Jungbum Choo),조청훈(Chunghoon Jo),지요한(Yohan Ji),윤금중(Kumjung Yoon) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, 'Clean Diesel' is rising for a countermeasure of high oil prices and global warming. And it accelerates the extension of the passenger car diesel engine market in North America as well as in Europe. We need to contrive the emission of engine for more dynamic driving mode than FTP75 and US06, which are the test cycle of US emission regulation as well as NEDC, which is that of European emission regulation. Existing emission development based on dynamometer by mapping of steady state 14-mode which simulates NEDC, relatively mild driving condition, has limitation because it cannot fully simulate vehicle driving motion. In this research, it is introduced a necessary simulation of vehicle motion, test conditions, test method for developing vehicle emission by using dynamic dynamometer. In addition, the difference of test results is compared and the methods for more accurate simulation are proposed.