首页|启动工况下双质量飞轮瞬态振动特性

启动工况下双质量飞轮瞬态振动特性

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
针对双质量飞轮扭转减振器在启动工况下的瞬态振动特性进行研究.首先,建立启动工况传动系三自由度非线性仿真模型和启动工况仿真控制模型;其次,为提升模型仿真精度,模型分别考虑了发动机启动反拖过程压缩空气阻力矩、点火燃烧过程转矩波动、摩擦阻力矩以及双质量飞轮单元非线性扭转特性和变速箱输入轴齿轮搅油阻力矩,并通过实车试验验证了仿真模型的准确性;然后,针对双质量飞轮性能参数、启动电机和节气门开度等因素,开展启动工况下的瞬态振动特性仿真分析,明确各参数对启动工况瞬态振动的影响规律;最后,实车试验表明模型误差小于10%,说明笔者针对启动工况下的仿真建模方法正确有效;仿真结果表明,双质量飞轮扭转刚度和启动电机扭矩幅值对汽车启动工况下的瞬态扭转振动影响最大.本研究方法结论对解决相关工程问题有较好的借鉴意义.
Transient Vibration Characteristics of Dual Mass Flywheel Under Starting Condition
In this paper,the transient vibration characteristics of the dual-mass flywheel under starting condi-tions are studied.The 3-DOF nonlinear simulation model of the drivetrain under starting conditions and the simulation control model under starting conditions are established.To improve the simulation accuracy,the com-pressed air drag torque during engine start-up and reverse traction,torque fluctuation during ignition and com-bustion,friction torque,nonlinear torsional characteristics of dual mass flywheel unit and oil stirring drag torque of gearbox input shaft gear are considered respectively,and the accuracy of the simulation model is verified by vehicle test.Then,according to the performance parameters of the dual mass flywheel,starting motor and throttle opening,the simulation analysis of transient vibration characteristics under starting conditions is carried out,and the effect of each parameter is clarified on the transient starting conditions.The vehicle test shows that the model error is less than 10%,illustrating that the modeling method in this paper is correct and effective un-der the starting condition.The simulation results show that the torsional stiffness of the dual mass flywheel and the torque amplitude of starting motor has the greatest influence on the transient torsional vibration under start-ing conditions.The research methods and conclusions of this paper have good reference significance for solving relevant engineering problems.

starting conditionunit modelingquasi-transient engine modeldual mass flywheeltransient vi-bration

陈龙、史文库、陈志勇、陶磊

展开 >

太原理工大学机械与运载工程学院 太原,030024

吉林大学汽车仿真与控制国家重点实验室 长春,130025

中国煤炭科工集团太原研究院有限公司 太原,030006

启动工况 单元建模 准瞬态发动机模型 双质量飞轮 瞬态振动

国家重点研发计划山西省重点研发计划汽车仿真与控制国家重点实验室开放基金煤矿采掘机械装备国家工程实验室开放基金山西省基础研究计划(自由探索类)资助项目太原理工大学校青年基金(2022)

2020YFB13140012022ZDYF01920210218GCZX-2023-02202103021241192022QN004

2024

10.16450/j.cnki.issn.1004-6801.2024.04.010

振动、测试与诊断
南京航空航天大学 全国高校机械工程测试技术研究会

振动、测试与诊断

CSTPCD北大核心
影响因子：0.784
ISSN：1004-6801
年,卷(期)：2024.44(4)