
第41卷(2019)第1期系统与附件
柴油机 Diesel Engine
Vol. 41 (2019) No. 1
高压共轨系统水击压力波动T型谐振型滤波器
苏海峰”,李龙”,冯国胜”
(1.石家庄职业技术学院,河北石家庄050081;
2.石家庄铁道大学机械与车辆工程学院,河北石家庄050043)
摘要:针对柴油机高压共轨系统水击压力波动影响多次喷射喷油量的精确控制,设计了适用于高压共轨系统的T型谐振型滤波器。台架试验结果表明:T型谐振型滤波器对共轨系统水击压力波动和油量波动有明显的消振和滤波作用。水击压力波动最大衰减率达17,最大油量波动率降低 19%。同时,T型谐振型滤波器具有结构简单、容积小、效率高的特点。
关键词:高压共轨;多次喷射;水击压力波;T型谐振型滤波器中图分类号:TK423.81
文献标识码:A文章编号:1001-4357(2019)01-0036-04
TheTResonanceFilterfortheWaterHammerPressureWavein
HighPressureCommonRailSystems
Su Haifeng', Li Long", Feng Guosheng
(1. Shijiazhuang Vocational Technology Institute , Hebei Shijiazhuang 050081 ;
2. School of Mechanical Engineering, Shijiazhuang Tiedao University,Hebei Shijiazhuang 050043) Abstract: Water hammer pressure wave occurring in the high pressure common rail system would influ-ence the accurate control of fuel volume of multi -injection. The T resonance filter for high pressure com-mon rail systems were designed to solve this problem . Test results show that with the T resonance filter , the amplitude of water hammer pressure wave , as well as the fluctuation of injected fuel are significantly reduced, the maximum attenuation rate of water hammer pressure wave has reached 17, meanwhile, the maximum fluctuation rate is reduced by 19% . Besides these favorable results , the T resonance filter fea-tures simple structure , small size and high efficiency.
Key words : high pressure common rail ; multi-injection; water hammer pressure wave ; T resonance filter
0引言
柴油机高压共轨系统多次喷射中,由于连续喷射的间歇时间短,喷油器前次喷射针阀关闭产生的水击压力波会显著影响后次喷射的喷射过程,造成后次喷射油量随两次喷射间歇时间波动。水击压力波动影响多次喷射喷油量的精确控制,从而影响共轨柴油机的燃烧和排放性能!~3
孔板式消振器安装在共轨和高压管的连接处,
对压力波动起到了阻尼作用,使主、预喷射的最大油量波动率降低,但同时降低了喷射系统的流动效率,使喷油量减小[4]。容腔型滤波器的滤波效果随容腔的增大而增大,但降低了发动机瞬态过程的动态特性,且由于高压共轨柴油机的结构,其安装布置具有一定难度[5]。
T型谐振型滤波器具有结构简单、容积小、压力损失小、衰减效果好的优点。本文根据高压共轨系统的结构特点设计了管式T型谐振型滤波器,
收稿日期:2018-03-27;修回日期:2018-05-18
基金项目:国家自然科学基金(51076014);河北省自然科学基金(E2016106018);河北省工程机械动力与传动控制重点实验室资助
项目PTC1501,
作者简介:苏海峰(1971-),男,教投,主要研究方向为高压共轨系统开发,13503213275@163.eom。