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전제록(Jerok Chun),윤금중(Kumjung Yoon) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Injector modification, Oil ring tension reduction and Oil pump rotor re-matching with optimization of relevant control parameters drived fuel consumption reduction of HSDI diesel engine. Injector was modified and evaluated in view of fuel economy and emission trade-offs. With introducing smaller nozzle hole diameter PM (particulate matter) was enormously decreased in lower rpm/lower BMEP area. Some hardware were modified for reducing mechanical friction and proved to be better fuel economy. Specially ECU data optimization was a great help to 1ow fuel consumption. The influence of calibration parameters including pilot quantity, pilot interval, air mass and main injection timing on fuel economy, smoke and NOx has been evaluated in the typical 14 points from NEDC cycle. The fuel consumption was proved to 7% improvement in the engine bench and 3.7% in the vehicle.
HSDI 디젤엔진에 있어서 Multiple Injection에 따른 연비 및 Emissions에 대한 연구
표순찬(Soonchan Pyo),전제록(Jerok Chun),윤금중(Kumjung Yoon) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_1
The intluence of double pilot on combustion noise, soot, NOx and BSFC has been confirmed on a 2.0L HSDI diesel engine equipped with a common rail fuel injection system. By examining the exhausted gases of NEDC emission cycle on chassis roller test and by measuring of part load test on engine lest bed, extremely higher values of NOx and soot show on acceleration range and EUDC area of NEDC cycle. Optimal multiple injections strategy in viewpoint of the combustion noise and soot reduction was proposed, by inspecting post2 timing and quantity swing Multiple injections can be utilized to reduce soot and combustion noise without deteriorating fuel economy and NOx.
디젤 매연 필터에서 퇴적되는 입자상 물질의 퇴적량 예측
유준(Jun Yu),김영직(Youngjik Kim),전제록(Jerok Chun),홍현준(Hyunjun Hong) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Diesel particulate filter (DPF) has been developed to optimize engine out emission, especially particulate material (PM). One of the main important factors for developing the DPF is estimation of soot mass being accumulated inside the DPF. Monitoring of pressure drop over the DPF is a simple way to evaluate the accumulated soot mass but its accuracy is known to be limited to a certain vehicle operating condition. To compensate drawback of the method is adoption of integrating time history of the engine out PM and burning soot. Present study demonstrates current status of the soot estimation methods including the results from the engine test benches and vehicles.
CO₂ 규제 대응을 위한 다운사이징 개념의 1.7 Liter EU5 디젤엔진 개발
박성근(Sung Geun Park),허행표(Haeng Pyo Heo),윤석진(Seog Jin Yoon),전제록(Jerok Chun) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
In order to reach the goal of CO2 emission regulation in European market by 2012, Hyundai-Kia Motor has been developed the new diesel engine with downsizing concept for the purpose of substitution of 2.0 L engine on D-segment vehicles. The main development strategy is to find the optimized combustion matching with new chamber design, optimal injection- and enhanced turbocharging system including advanced intake management. Also extensive hardware investigation from aspects of friction reduction and thermal management has been performed to improve the fuel consumption. Through the sharing and modulation of parts with series platform it was possible to spread strategy with maximized synergies and also cost reduction. The new small displacement diesel engine with low fuel consumption characteristic is able to achieve the attractive driving performance, fulfill EURO-V emission regulation and also enough to estimate the potential of future emission standards.
실린더 압력 분석을 이용한 터보 디젤 엔진의 밸브 타이밍 최적화
강용석(YongSeok Kang),이형상(HyeongSang Lee),김영호(YoungHo Kim),팽정환(JeongHwan Paeng),전제록(JeRok Chun) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
The intake and exhaust valve timing were optimized in order to improve low-end torque without rated power decrease in both R-2.0L and R-2.2L turbocharged diesel engines which shares head assembly in common. The variants for engine test were determined by the simulation using GT-power. Intake and exhaust cam profile were varied from the base configuration up to -4% in IVC (early direction) and +6% in EVO (early direction). As a result of valve timing optimization, -4%(IVC) and +5%(EVO), low-end torque was improved by 4.6% in R-2.0L and 3.1% in R-2.2L without any decrease in overall performance.