现代制造工程Issue(8)：68-75,8.DOI:10.16731/j.cnki.1671-3133.2024.08.009
汽车发动机高压共轨系统轨压特性分析与优化
Analysis and optimization of rail pressure characteristics in high-pressure common rail systems of automotive engines
摘要
Abstract
The mathematical model of the high-pressure common rail injection system of automotive engines was established based on the key component parameters,and the simulation using AMESim software was conducted.The accuracy of the simulation mod-el was verified through experimental analysis.Through the simulation analysis of the system's rail pressure fluctuations and pres-sure characteristics,it was found that the length and inner diameter of the common rail pipe,and the inner diameter of the high-pressure oil pipes are the important parameters that affect the system's rail pressure characteristics.For the original common rail pipe and high-pressure oil pipe models,the response surface method was used to optimize and analyze the parameters of the com-mon rail pipe and high-pressure oil pipes,and obtain the optimal size parameters of the common rail pipe and high-pressure oil pipes with the average rail pressure setting value as the target.After optimization,the average rail pressure of automotive engines'high-pressure common rail injection system improved by 0.65％,the overall average rail pressure fluctuation decreased by 79.48％,the average rail pressure fluctuation during a single injection process decreased by 27.89％,and the average fuel in-jection pressure increased by 0.63％.Its fuel injection characteristics have been significantly improved.关键词
发动机/高压共轨/AMESim软件/平均轨压/优化研究Key words
engines/high-pressure common rail/AMESim software/average rail pressure/optimization research分类
能源与动力引用本文复制引用
周传彪,韩振华,张勇..汽车发动机高压共轨系统轨压特性分析与优化[J].现代制造工程,2024,(8):68-75,8.基金项目
国家自然科学基金项目(52005451) （52005451）
达州市科技计划项目(22YKX0020,21DYF0015) （22YKX0020,21DYF0015）
