基于MOSA算法的高压共轨喷油器多目标仿真优化设计

摘要

A precise model for the common rail fuel injector based on the Matlab/Simulink was built. Using the multi objective simulated annealing algorithm as the search strategy, the key injector parameters were optimized. The aim function of the multi objective optimization was the opening delay and the closing delay. The results showed that the delay of the opening was 0. 25 ms which reduced by 16. 7% ; while the delay of the closing was 0. 78 ms, which reduced by 15. 2% .%建立了高压共轨喷油器的Matlab/Simulink仿真模型,采用多目标模拟退火MOSA优化算法作为寻优策略,以针阀开启延迟和关闭延迟为目标函数进行高压共轨喷油器的关键结构参数多目标仿真优化设计.实验结果表明:优化后的高压共轨喷油器针阀开启延迟时间降低16.7%,达到0.25 ms;关闭延迟时间降低15.2%,达到0.78 ms.