摘要
本文中对液力变矩器与发动机的匹配进行研究。首先,建立了发动机转矩特性与液力变矩器原始特性模型,求得两者共同工作的输入输出特性;然后,根据一维束流理论和能量方程,以两者匹配工作的动力性和经济性为目标,以泵轮出口角和导轮进出口角为设计变量,建立了多目标匹配优化模型,使用遗传算法进行优化,得到Pareto最优解集。结果表明:优化后,最大输出转矩和平均输出功率提高,高效转速范围的燃油消耗率降低,验证了所建模型的正确性与可行性。
The matching of torque converter （TC） with engine is studied in this paper.Firstly,the models for the torque characteristics of engine and the initial characteristics of TC are established,based on which their input and output characteristics under coordinated operation are obtained.Then by applying the one-dimensional flow beam theory and energy equation,with the power performance and fuel economy under coordinated operation as objectives,the exit angle of bump wheel and the entrance angle of stator wheel as design variables,a multi-objective optimization model is set up and the Pareto optimal solution set is obtained by a simulation with genetic algorithm.The results show that after optimization,the maximum output torque and average output power rise and the specific fuel consumption at high-efficiency speed range falls,verifying the correctness and feasibility of the model built.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第5期532-536,共5页
Automotive Engineering
关键词
发动机
液力变矩器
匹配
多目标优化
遗传算法
engine
torque converter
matching
multi-objective optimization
genetic algorithm
