http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
육상덕(Sangduck Youk),오염락(Yumrak Oh) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Hydroplaning is a the term used to describe the condition when a vehicle's tires lose effective contact with the pavement surface due to excessive depth of water on the road surface. It is such a critical factor for vehicle safety and performance that many automotive industries are trying to understand this phenomenon. In the present work, hydroplaning performance according to the tire air pressure change is analyzed using the wheel slip ratio (on a straight road) and curve point, Δlateral acceleration, Δyaw rate (on a curved road). It was found that reducing the front or front & rear air pressure by 10% resulted 4~5% less effective performance comparing with the F30R30 condition in a straight region. In addition, the lower air pressure caused the worse performance on a curved road as well, and strong correlation between the hydroplaning and the wet braking and wet handling were observed.
육상덕(Sangduck Youk),김수상(Soosang Kim),조봉근(Bonggeun Cho),하성필(Seongpil Ha) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
Braking characteristics are a very important element in vehicle performance. In this regard, the most common technology used to date is to obtain the maximum friction between the tyre and the road surface through the ABS control. However, most of the ABS developments have been carried out on vehicles. These developments have temporal / spatial limitations. Using simulation techniques as an alternative to resolving problems, this paper is used to execute the ABS through the simulation technique and demonstrate that the results have been correlated.
고도에 따른 엔진 출력 변화를 고려한 TCS 성능 최적화
황의찬(Euichan Hwang),강민구(Mingu Kang),육상덕(Sangduck Youk),명재상(Jaesang Myung) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
In order to reduce vehicle accidents, ESC is installed in many contries as a standard. Among ESC, TCS is to request the engine torque increase when the driver press the accelerator pedal while driving. Generally, the speed increase of the vehicle can be predicted by the degree of the force applied to the accelerator pedal. However, the torque does not increase as much as the intention of the driver due to the low friction, gravel road, driving on road which friction ratio ratio are smaller than grips, and many other reasons. In this paper, the engine torque degradation due to the difference of oxygen partial pressure according to the altitude of the internal combustion engine has studied. In addition optimization model has applied to TCS control to maintain aceeleration and compensate the engine torque.