喷油器弹簧预紧力特性研究
Study on the Characteristics of Spring Preload in Injector

作者: 刘 渊 , 李 强 , 江瑞田 , 董 鹏 , 任 刚 , 杜言锋 , 何永慧 :中国船舶重工集团公司第七一一研究所,上海;

关键词: 柴油机电控单体泵弹簧预紧力喷射特性Diesel EUP Spring Preload Injection Characteristics

摘要:
在AMESim环境下建立电控单体泵系统的仿真模型,并对比实验结果完成模型标定。研究相同弹簧预紧力作用下,喷油压力、喷油速率、针阀运动速率及喷油量随转速的变化规律。针对不同转速,探索喷油压力、启喷压力、喷油时间及喷油量随弹簧预紧力和转速的变化机理。得出在低转速下,适当减小弹簧预紧力可以防止针阀因燃油建压速率慢而关闭,从而获得良好的喷射特性;在高转速下,弹簧预紧力变化对喷油压力影响很小。

Abstract: The simulate model of EUP system was built in AMESim environment, and the model was cali- brated by comparing with the experiment results. Under the action of the same spring preload, the laws of injection pressure, injection rate, the rate of needle movement and fuel injection quantity which transform with the speed variation were researched. Furthermore, at different speeds, the mechanism of injection pressure, nozzle open pressure, injection duration time and fuel injection quantity which change with spring preload and speeds was explored. Finally, some conclusions have been drawn that at low speeds, reducing the spring preload appropriately can prevent needle closing caused by slower pressure building, and result in a good injection characteristics; at high speeds, spring preload changes have few influence on the injection pressure.

文章引用: 刘 渊 , 李 强 , 江瑞田 , 董 鹏 , 任 刚 , 杜言锋 , 何永慧 (2014) 喷油器弹簧预紧力特性研究。 动力系统与控制, 3, 38-46. doi: 10.12677/DSC.2014.33006

参考文献

[1] Greeves, G., Tullis, S. and Barker, B. (2003) Advanced two-actuator EUI and emission reduction for heavy-duty diesel engines. SAE Paper 2003-01-0698.

[2] Fan, L.Y., Ma, X.Z., Tian, B.Q., et al. (2010) Quantitative analysis on cycle fuel injection quantity fluctuation of diesel engine electronic in-line pump system. SAE Paper 2010-01-0875.

[3] 刘波澜, 陆宏泽, 张付军, 等 (2007) 电控单体泵燃油喷射系统一维耦合仿真. 兵工学报, 3, 267-271.

[4] 王凤丽 (2008) 电控单体泵燃油喷射系统耦合仿真. 中国工程机械学报, 2, 214-216.

[5] 董尧清, 王志华, 顾萌君, 等 (2005) 柴油机单弹簧和双弹簧喷油器燃油系统喷射特性的仿真研究. 内燃机学报, 6, 554-561.

[6] 张健, 董尧清, 俞建达, 等 (2002) 双弹簧喷油器与CA6110柴油机的匹配研究. 现代车用发动机, 1, 9-14.

[7] 郝守刚, 周明, 夏胜枝, 等 (2003) 电控单体泵电磁阀动态响应特性数值仿真. 内燃机工程, 2, 10-13.

[8] 王裕鹏, 刘福水, 刘兴华, 等 (2011) 单缸电控单体泵低压油路供油特性. 农业机械学报, 5, 24-29.

[9] 杨时威, 吴长水, 冒晓建, 等 (2009) 电控单体泵燃油喷射系统仿真. 系统仿真学报, 6, 1743-1747.

分享
Top