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2 stage CVT 하이브리드 자동차의 회생제동 알고리즘 개발
채민재(Minjae Chai),고지원(Jiweon Ko),권오은(Oheun Kwon),김현수(Hyunsoo Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
In this study, a regenerative braking control algorithm for 2 stage CVT hybrid electric vehicle is proposed to increase the recuperation energy during braking. The regenerative braking control algorithm selects the proper gear ratio of the planetary gear while the CVT variator ratio is controlled to maintain the motor operation on the optimal operating line. In order to evaluate the performance of the regenerative braking control algorithm, a 2 stage CVT hybrid electric vehicle simulator is developed. It is found from the simulation results that the amount of the regenerative braking energy is increasedly the proposed control algorithm.
병렬형 CVT 하이브리드 자동차의 ISG 성능에 관한 연구
권오은(Oheun Kwon),채민재(Minjae Chai),지건(Jian Ji),김현수(Hyunsoo Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
In this study, a feasibility of reducing the ISG capacity is investigated for a parallel CVT hybrid electric vehicle(HEV). Using the CVT function, clutch speed of the motor side is decreased which provides the decreased clutch speed of the engine side. This gives a reduced ISG capacity which is required to increase the engine speed to the synchronization point. To evaluate the performance of mode change control with the reduced ISG, CVT HEV simulator is developed based on MATLAB/Simulink and SimDriveline. It is found from the simulation results that the mode change using the reduced ISG show satisfactory performance by the CVT control.
민경휘(Gyeonghwi Min),손한호(Hanho Son),채민재(Minjae Chai),송민석(Minseok Song),홍성화(Sungwha Hong),최영선(Youngsun Choi),조성택(Sungtaeg Cho),최승만(Seungman Choi),김민효(Minhyo Kim),김현수(Hyunsoo Kim) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
In this paper, a dual clutch transmission(DCT) shift performance simulator were developed to evaluate the shift quality using MATLAB/Simulink and SimDriveline. Dynamic models of the DCT were obtained including synchronizer, gear fork actuator system, and clutch Based on the dynamic models, a DCT shift performance simulator was developed. Test and simulation results were compared to verify the DCT shift performance simulator. It was found that the test and simulation results were good agreement, and it is expected that developed simulator can be used to improve the shift quality of the DCT.
2 stage CVT 가속성능 개선 변속 제어 알고리즘 개발
박정만(Jeongman Park),지건(Jian Ji),권오은(Oheun Kwon),채민재(Minjae Chai),심장선(Jangsun Sim),임광혁(Kwanghyuk Lim),조서연(Seoyeon Cho),김현수(Hyunsoo Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
In this study, a 2 stage CVT shift control algorithm is proposed for kickdown shift to improve acceleration performance. The proposed shift control algorithm controls a desired secondary pressure to increase a variator shift speed and a release clutch pressure to shift a planetary gear smoothly. In order to evaluate acceleration performance of the control algorithm, a 2 stage CVT vehicle simulator is developed based on MATLAB/Simulink and SimDriveline. It is found from the simulation results that an acceleration performance is improved in terms of an increase of variator shift speed.