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주민구(Minku Joo),장영기(Youngki Jang),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
This test evaluates noise characteristics of a torque converter for different types of drive plates. The torque converter consists of the hydrodynamic clutch device and the lock-up clutch device. This prat is connected directly between an engine and an automatic transmission for the high efficiency and the low fuel consumption. Engine and torque converter are combined by a flexible drive plate, and engine power is passed to an automatic transmission. By applying different types of drive plates of torque converter, we can be found a change of the noise characteristics. As a result, the torque converter with the drive plate optimization is good for noise reduction.
드라이브 플레이트의 고속 회전 시험 후 소성변형 예측에 관한 연구
주장혁(JangHyuk Joo),황범철(BeomCheol Hwang),장재덕(JaeDuk Jang),주인식(InSik Joo) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, concerns about optimum design with the CAE analysis are rising in a Automotive industrial. The CAE is given a great deal of weight on the design process and the growing dependence on CAE could result in increasing the number of CAE engineers in Automotive Industrial. In this study a drive plate is analyzed to predict the number of appropriate welding beads at 7,00rpm, 8,000rpm, 9,000rpm, the result is presented as a basis for optimum design. By analyzing the drive plate, it is predicted whether the Sender Drive Plate which generate the output waveform of crank angle sensor deforms plastically or not. According to analysis results and test results it is found that the plastic deformation could be occurred at all range on 6 places weld, at 8,000rpm on 9 places weld but it could not be occurred at all range on 12 places weld. Therefore the number of appropriate welding beads is more than 9.
슬립 제어 토크 컨버터 냉각 홀에 의한 소음 특성 연구
주민구(Minku Joo),이성일(Sungil Lee),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
A torque converter consists of the hydrodynamic clutch device and the lock-up clutch device. The lock-up clutch connects directly between an engine and an automatic transmission for the high efficiency and the low fuel consumption. Recently, lock-up clutch is changed slip control instead of on-off control. The slip control of lock-up clutch is necessary for the better fuel economy. But slip control of lock-up clutch system has high thermal resistance and durability problem. The lock-up capacity and cooling flux are very important for solution of high temperature and durability. This test evaluates noise characteristics by the cooling hole of the slip controlled torque converter.
자동 변속기유 용량이 토크 컨버터 록업 클러치 마찰재 내구 수명에 미치는 영향
박지열(Jiyeol Park),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
Friction plate which is main torque transfer element in lock-up clutch system is made of wet friction material that is consisted of synthetic fiber. Factors that decide characteristics of friction material are material composition, surface of steel plate, ATF oil and control condition. Particularly, ATF volume capacity is a important factor for friction characteristics and durability of friction material. The analysis of friction and wear characteristics of friction plate is investigated by using LVFA machine. This study provides applicable ATF Volume capacity for lock-up clutch system.
박태준(Taejun Park),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper discussed deformation of torque converter at lock-up mode. It was mainly verified by high spin experiment, so this paper made an attempt to analyze high spin experiment by structural analysis. To analyze high spin experiment, 1/4 FEM model was made. And, cyclic symmetry condition and pressure included the centrifugal force were used. By analysis results. it showed that analysis results agree with experiment results at less than 3000rpm. And, because of plastic deformation at more than 3000rpm, analysis results make a difference with experiment results.
dsPIC를 이용한 전기자전거의 속도에 따른 회생제동에 관한 연구
김준성(Junseong Kim),이경환(Kyunghoan Lee),장재덕(Jeaduk Jang),주인식(Insik Joo) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Due to the environmental pollution and exhausted resources, these days, a research is in progress to find renewable energy which will substitute or reduce using of fossil energy. To correspond with HEV has been developing actively. Regenerative braking is widely applied for fuel efficiency improvement, stability of vehicle and reducing energy in HEV. This paper demonstrate the superiority of brake and regeneration in low-speed(5㎞/h), middle-speed(10㎞/h) and high-speed(15㎞/h), applying the regenerating system which widely used to HEV to electric bicycle. The efficiency is confirmed using Microchip"s dsPIC30F6015 by controlling 300W BLDC motor with recognized the electric bicycle.
CFD를 활용한 토크컨버터 유동성능 해석의 최적기법 연구
김희연(Heeyeon Kim),권의섭(Eausyb Gwon),김진문(Jinmoon Kim),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Torque converter located in automatic transmission is important role that absorb the vibration of the engine and torque conversion. To improve vehicle performance, development of the torque converter matching to advanced engine performance is essential. The torque converter consist of impeller, turbine ,reactor and complex three dimensional shape. In order to implement a fluid performance according to the characteristics of the vehicle. Final shape is determined through repeated analysis. Flow analysis of the torque converter is essential. Time required for the analysis and accuracy of the analysis is most important. The paper proves that how to minimize the space and analysis method for determining the size of the grid to maintain the accuracy of the interpretation.
토크 컨버터용 댐퍼 시스템의 드리븐 플레이트 후크 충격량에 관한 연구
이헌봉(Hunbong Lee),이재용(Jaeyong Lee),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Torque converter in automatic transmission transfers the engine power to transmission by ATF and lock-up clutch. The lock-up clutch connects the engine torque directly to transmission. At this moment, the relative rotational speed difference between engine and transmission, so the impact may occur. The hook of the driven plate can bear the impact and durability is necessary. In this study, it was checked impact force of driven plate"s hook. Load sensor was bonded in driven plate"s hook. Impact sensor was measured impact force during operating mechanical stopper.
구조해석을 통한 T/CON 피스톤 처짐량 및 피로수명에 대한 연구
임상우(Sangwoo Lim),이웅철(Woongchul Lee),권의섭(Eaisub Kwon),신순철(Sooncheol Shin),주인식(Insik Joo) 한국자동차공학회 2013 한국자동차공학회 학술대회 및 전시회 Vol.2013 No.11
Torque converter consists of fluid clutch and lock-up clutch. When the lock-up clutch activates, piston operation transfers the engine power to the transmission. In recent times, in order to meet the requirements for light weight and stability, Torque converter requires optimized design using structural analysis considering maximum load. The most effective parts to lightweight is piston of lock-up clutch which is necessary design criteria. In addition, study for life optimization was conducted. For analysis, piston shape is of single facing clutch type. In the future, this study will aid for structural design of piston.
박재현(Jaehyun Park),전효찬(Hyochan Jeon),홍순석(Soonsuk Hong),장재덕(Jaeduk Jang),주인식(Insik Joo) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
More than five pulleys are used in an automobile, such as crankshaft, water pump, air-con compressor, fan and power steering pump pulley. Although the shape of pulley is simple, the design evaluation of a pulley is difficult because of composite boundary conditions such as the thickness of a pulley, the tension force of a v-belt, the tightening torque of bolts and the shape of the bracket. To analyze pulley system with dynamic stress, numerical simulation was carried out using DAFUL and it’s compared with static analysis. As a result, the result of dynamic analysis is lower than static analysis..