CAJ | 학술논문

为提高ISG混合动力汽车的燃油经济性，开展控制规则优化与转矩分配策略研究，以保证发动机工作在高效区域。从控制发动机输出负荷角度出发，综合考虑ISG效率特性和电池组充放电特性，对发动机、ISG、电池组稳态工作区域进行划分。以混合动力系统工作模式分析为基础，提出各模式下能量管理策略，并根据车辆行驶过程中工作模式动态切换的需要，制定了模式切换策略。以IVECO并联混合动力汽车为例，按照ECE+EUDC工况进行了基于优化规则的转矩分配策略硬件在环仿真，结果表明采用基地规则的转矩分配策略能有效地协调转矩在发动机和ISG之间的分配，综合油耗比原车降低20%。
위제고ISG혼합동력기차적연유경제성，개전공제규칙우화여전구분배책략연구，이보증발동궤공작재고효구역。종공제발동궤수출부하각도출발，종합고필ISG효솔특성화전지조충방전특성，대발동궤、ISG、전지조은태공작구역진행화분。이혼합동력계통공작모식분석위기출，제출각모식하능량관리책략，병근거차량행사과정중공작모식동태절환적수요，제정료모식절환책략。이IVECO병련혼합동력기차위례，안조ECE+EUDC공황진행료기우우화규칙적전구분배책략경건재배방진，결과표명채용기지규칙적전구분배책략능유효지협조전구재발동궤화ISG지간적분배，종합유모비원차강저20%。
In order to enhance the fuel economy of ISG hybrid electric vehicle, the control rule optimization and torque distribution strategy are studied for ensuring engine working in high efficiency regions. Firstly from a point of view of regulating engine output load and concurrently considering ISG efficiency characteristic and battery charge / discharge characteristics, the steady working regions of engine, ISG and battery pack are divided. Then the energy management strategies for different working modes are proposed based on the working mode analyses of hybrid powertrain, and the mode switching strategy is worked out according to the requirement of dynamic switching of working modes in vehicle driving process. Finally a hardware-in-the-loop simulation for torque distribution strategy based on optimized rule is conducted on an IVECO parallel hybrid electric vehicle with ECE+EUDC driving circle. The results show that the rule-based torque distribution strategy adopted can effectively coordinate the torque distribu-tion between engine and ISG with its overall fuel consumption reducing by 20% compared with original vehicle.