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关于气门论文范文 电控液压全可变气门驱动系统设计和分析相关论文写作参考文献

分类:职称论文 原创主题:气门论文 更新时间:2024-03-16

电控液压全可变气门驱动系统设计和分析是关于本文可作为相关专业气门论文写作研究的大学硕士与本科毕业论文发动机气门论文开题报告范文和职称论文参考文献资料。

摘 要:为了满足发动机设计及性能指标要求,比较分析国内外先进气门执行机构的优缺点,设计一种新型电控液压全可变气门驱动系统.在此基础上,建立气门驱动系统的数学、物理模型,借助MATLAB/Simulink计算平台搭建本系统计算仿真模型并用试验结果进行验证,保证了计算模型的可靠性.根据系统结构,详细分析了可控性参数旋转阀相位差角及蓄压器压力和发动机转速对气门最大升程、气门开启持续期、气门启闭时刻、气门速度及加速度的影响.研究结果表明,旋转阀相位差角通过改变气门开启持续期改变气门关闭时刻,但不影响气门开启段升程规律;蓄压器压力对气门最大升程有重要影响,但不改变气门开启持续期及启闭时刻;在不同发动机转速下,气门最大升程、关闭时刻均有改变;随着发动机转速的提高,气门升程断面积减小,气门关闭时刻推迟.

关键词:发动机;可变气门正时;可变气门升程;气门速度;流体控制;电控液压

中图分类号:U464.134 文献标志码:A

Design and Analysis of Electro-hydraulic

Fully Variable Valve Actuation System

YANG Jing1,2,WANG Zichang1, WANG Yi1,3, LI Yangtao3, Amir Khajepour1,3, FENG Renhua2

(1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China;

2. Key Laboratory of Advanced Manufacture Technology for Automobile Parts, Ministry of Education,

Chongqing University of Technology, Chongqing 400054,China;

3. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L3G1, Canada)

Abstract:In order to satisfy the requirements of design and performance of an internal combustion engine, all kinds of existing variable valve actuation systems were compared by analyzing their advantages and disadvantages, and a novel electro-hydraulic variable valve actuation system was then developed. Afterwards, a simulation model based on the mathematical and physical equations was developed through MATLAB/Simulink softwares, and the developed model was verified by experimental results. Furthermore, the effects of controllable parameters such as the phase angle difference between high and low pressure rotary valve, accumulator pressure and engine speed on maximum lift, valve open duration, and valve velocity and acceleration were investigated. The results showed that phase angle difference had limited influence on valve trajectory at the beginning section of lift, but changed the valve closing by altering valve open duration. The pressure of accumulator did not change the valve timing and its duration, but influenced significantly on the maximum valve lift. The maximum valve lift and valve closing were affected by the engine speed variance. Sectional area of valve lift decreased and valve closing delayed with the increasing engine speed.

Key words:internal combustion engine; variable valve timing; variable valve lift; valve velocity; fluid control;electro-hydraulic

近年來,迫于环境恶化的压力,发动机动力性、经济性及排放性要求日益严格.为了满足相应的法律法规要求,发动机先进技术不断向前发展[1],配气机构的发展直接影响发动机的动力性、经济性和排放水平[2],先进可变气门相位和升程技术是发动机提高动力性、改善燃油经济性和降低有害排放的有效途径[3-4].

总结:这是一篇与气门论文范文相关的免费优秀学术论文范文资料,为你的论文写作提供参考。

参考文献:

1、 结构紧凑成本更低电驱动系统 德国大陆集团针对中国市场开发出一种新型电气传动系统,采用了创新设计理念,结构更加紧凑且成本更加低廉。这一系统将电机、传动装置和电力电子设备整合。

2、 船用电控柴油机燃油共轨系统分析与管理 摘要:本文以MAN B&W公司的ME低速柴油机为例,具体介绍了电控柴油机燃油共轨系统关键技术,ME系列的特点及工作原理,并从管理角度对该系统的主。

3、 电控悬架系统的结构原理和检修 摘要:随着人们生活水平的不断提高,汽车俨然已经成为了多数人的重要交通工具,在此情况下,汽车性能的优劣与否,也成为了人们极为重视的问题。因此,对电。

4、 基于STM32F7电机驱动系统设计 摘 要:文章采用基于Cortex-M7内核的STM32F7,设计了一套电机驱动系统,其具有串口通讯、以太网通讯、永磁同步电机驱动等功能。在软件设。

5、 基于LabVIEW的无线网络测控系统设计 摘要:为解决野外条件下远距离测量与控制问题,提出一种无线网络测控系统架构,设计了相关硬件,并用代码实现了测控和混沌加密算法模块。测试结果表明,与。

6、 燃料全闭环管理系统在汽车运煤火电厂应用 摘 要:本文阐述了火力发电厂汽车运煤在燃料全闭环管理中的应用经验,供大家参考。关键词:火电厂;燃料全闭环;三级管理;采制化管理0 引言随着。