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[동력전달계부문] 무단 변속기 장착 병렬형 하이브리드 차량의 다중모드 주행제어 알고리즘
전순일(Soonil Jeon),조성태(Sungtae Jo),박영일(Yeongil Park),이장무(Jangmoo Lee) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Vehicle performances such as fuel consumption are affected by a driving pattern, which is defined as a driving cycle with grades in this study. To optimize the vehicle performances on a temporary driving pattern, we developed a multi-mode driving control algorithm using driving pattern recognition and applied it to a CVT equipped parallel hybrid electric vehicle. The multi-mode driving control is defined as the control strategy which switches a current driving control algorithm to the algorithm optimized in a recognized driving pattern.<br/> For this purpose, first, we selected 6 representative driving patterns, which are composed of 3 urban driving patterns, I expressway driving pattern and 2 suburban driving patterns. Second, in each of 6 representative driving patterns, driving control parameters of this vehicle are optimized by the fuel-consumption simulations. Finally, in driving, a neural network(especially the Hamming network) decides periodically which representative driving pattern is closest to a current driving pattern by comparing their correlation. And then the current driving control algorithm is switched to the optimal one.
[동력전달계부문] 에너지 평형식을 기초로 한 하이브리드 차량의 엔진/모터/배터리 용량 매칭
전순일(Soonil Jeon),조성태(Sungtae Jo),박영일(Yeong-il Park),이장무(Jangmoo Lee) 한국자동차공학회 2001 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2001 No.11_2
In HEV(hybrid electric vehicle) that has usually two power sources such as chemical and electric energy, It is an important and difficult issue to quantify the fuel-economy, however, there is no standard method. In this paper, we present the fuel-economy improvement index a of HEV against baseline ICV(internal combustion vehicle). Namely, this index is not absolute value but relative value. For this purpose, first, we assume that the engine of ICV operates at only one point. From the reasonable result of this assumption, we assume that the engine of parallel HEV operates at two points, discharging and charging points, which can be selected to satisfy energy balance relation that makes the total consumed energy from battery in discharging be equal to the total stored energy into battery in charging. Second, through these assumption, we can obtain 3-D fuel-economy improvement index map, a map will two non-dimensional variables, that is, the discharging time over total time and the engine power in discharging over average required power in driving. Finally, we obtain the 3-D a map of parallel HEV according to its engine, motor, and battery sizes in urban and highway driving cycles, and use these results to select the most appropriate component size.