基于Labview的汽油直接喷射式发动机喷油器喷雾试验控制系统开发与喷雾试验  

The Development of Spray Test Control System Based on Labview and Spray Characteristics Tests of GDI Engine

作　　者：皮恒志 李君[1] 刘宇[1] 王亚[1] PI Heng-zhi;LI Jun;LIU Yu;WANG Ya(Jilin University, State Key Laboratory of Automotive Simulation and Control, Changchun 130022, P. R. China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022

出　　处：《科学技术与工程》2016年第30期79-84,共6页Science Technology and Engineering

基　　金：国家自然科学基金资助项目(51306069)资助

摘　　要：为了精确控制GDI发动机喷油器喷雾试验的喷油压力和喷油脉宽,开发了基于Labview的喷雾试验控制系统,并经过试验测试证明了系统的可靠性。在一定的试验条件下利用开发的喷雾测试装置对GDI六孔喷油器进行喷雾测试,试验结果表明喷雾贯穿距离随时间的增加速度先快后慢,喷雾锥角随时间变化不明显;喷油压力增加,喷雾贯穿距离在喷油压力在2~10 MPa时增加明显,10 MPa以后最终贯穿距离变化不大;喷雾锥角随喷油压力的提高略有提高。本次试验条件下喷雾锥角α近似正比于Δp^(0.15)。In order to accurately control injection pressure and injection pulse width of the fuel injector spray test of GDI engine a spray test control system based on Labview has been developed,and the reliability of the sys-tem was proved by the test.The spray characteristics of a6-hole GDI injector were measured by the system in cer-tain experimental conditions.The results show that the increasing speed of spray penetration distance would slow down and the spray cone angle did not change significantly over the test-time;the final spray penetration distance did not change significantly after the10MPa.The spray cone angle increase slightly with the rise of the injection pressure.The spray cone angle a is approximately proportional to A/?°

关 键 词：汽油直接喷射式(gasolinedirectinjection GDI)发动机喷油器 LABVIEW 喷油压力 喷雾贯穿距离 喷雾锥角 

分 类 号：TK413.84[动力工程及工程热物理—动力机械及工程]