新型共轨电控喷油器的开发.pdfVIP

第 43 卷 第 8 期 天 津 大 学 学 报 Vol.43 No.8 2010 年 8 月 Journal of Tianjin University Aug. 2010 ▋ 新型共轨电控喷油器的开发 张 晓，汪 洋，盖 超，朱 涛，何 方 (天津大学内燃机燃烧学国家重点实验室，天津 300072) 摘 要 ：提出并成功开发了一种基于新型工作原理的共轨式电控喷油器，适用于低黏度燃料 (二甲醚，甲醇等)的缸内 直喷．建立了相应的电磁和液力动态仿真模型，通过仿真计算，研究了喷油器的电磁结构参数及液力参数对动态电磁 力和喷油特性的影响，得出确定这些参数的原则．样机试验与仿真结果的对比表明：实际喷油器的开启响应时间为 0.7,ms ，比仿真结果略长，实际关闭响应时间 0.7,ms ，与仿真结果十分接近；仿真模型可以较好地预测油量特性的变化趋 势，在大油量时仿真喷油量与实际喷油量误差较小． 关键词 ：喷油器；共轨；仿真 中图分类号：TK402 文献标志码 ：A 文章编号 ：0493-2137 (2010)08-0679-06 A New Type of Electric Control Injector for Common Rail ZHANG Xiao ，WANG Yang ，GAI Chao ，ZHU Tao ，HE Fang (State Key Laboratory of Engines ，Tianjin University ，Tianjin 300072 ，China) A common rail electric control injector was developed based on a new principle put forward for common Abstract ： rail injection ，which is suitable for direct injection with low viscosity fuel (methanol ，DME ，etc). The correspond- ing electromagnetic and hydraulic dynamic simulation models were established．Effects of electromagnetic structure and hydraulic parameters on dynamic electromagnetic force and fuel injection characteristics were studied through simulation ，and the principle of parameter determination was obtained. Comparisons between prototype experiment and simulation show that both actual opening response time and closing response time are 0.7 ms. The former is a little longer than the simulation result while the latter is very close to the simulation result．The simulation model can pr