【作者】 于秀敏； 杨松； 赵立峰； 董伟； 张文超； 孙平； 何玲；

【Author】 Yu Xiumin Yang Song Zhao Lifeng Dong Wei Zhang Wenchao Sun Ping He Ling State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun,130022

【机构】 吉林大学汽车仿真与控制国家重点实验室；

【摘要】 以L9707芯片为基础,设计了电流驱动型喷油器控制系统,并进行了典型工况下的喷雾特性试验。结果表明,该控制系统可实现喷油器快速响应和稳定工作,能控制Peak-Hold电流波形。在典型工况下,多孔喷油器的初期喷雾锥角较大,喷雾稳定后略有减小;喷雾贯穿距离的发展明显分为两个阶段,初期阶段的喷雾贯穿距离增加迅速;主要阶段的喷雾贯穿距离增加缓慢。随着喷射压力增大,喷雾锥角和喷雾贯穿距离都略有增加。更多还原

【Abstract】 A current-driven injector control system based on L9707 chip is designed and a spray characteristics test under typical working condition is conducted.The results show that the control system can control the current waveform of Peak-Hold with fast response and stable operation.In typical working condition the spray cone angle of multi-hole injector is relatively large at first and then slightly reduces after spray is stabilized.The development of spray penetration distance is obviously divided into two stages:it increases rapidly in initial stage of spray and slowly in main stage.With the rise of injection pressure,both the cone angle and penetration distance of spray increase slightly.更多还原