考虑连杆惯性参数的三缸发动机激励建模与分析

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摘要针对传统曲柄滑块简化方法无法准确计算三缸发动机振动激励的问题，提出了一种新的三缸发动机激励建模计算方法。首先，考虑了连杆等部件的惯性参数，基于拉格朗日乘子法推导了三缸发动机振动激励的理论表达式，并代入了实车数据，计算了其激励后发现：三缸发动机在三个方向上都存在数量级相当的不平衡惯性力矩，而传统简化方法不会出现绕z轴的激励。然后建立了考虑液压悬置频变特性的动力总成悬置系统仿真模型，分别将本文方法和传统简化方法计算出的激励施加于仿真模型，计算了各悬置点的振动加速度响应。最后，为间接验证激励计算准确性，进行了某三缸发动机样车怠速振动实验，测量了各悬置点振动加速度响应，与仿真值进行了对比，结果表明，考虑连杆等部件的惯性参数后，可得到更为准确的三缸发动机激励，可应用于计算精度要求较高的场合。

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	左曙光1
	王珺1
	周大为1
	阎礁2
	安一领2
	吴旭东1

关键词 ：三缸发动机, 激励建模, 惯性参数, 拉格朗日乘子法

Abstract：To reduce the inaccuracy in excitation calculation of a three-cylinder engine,a new modeling calculation method was proposed.Considering the inertial parameters of connecting rods and other components,a theoretical expression for the vibration excitation of the three-cylinder engine was deduced based on the Lagrangian multiplier method.Then the excitation of the engine was calculated,unbalance inertia moments in all three directions were found,whereas the excitation around the z-axis will not appear,if calculating by traditional simplified methods.A model for the powertrain mounting system was built considering the frequency-dependent characteristics of the hydraulic engine mount,and the vibration accelerations at mount locations were simulated.Then the vibrating accelerations were measured through the idle vibration experiments on a sample car.By comparing the simulation results with measured values,the accuracy and superiority of the method considering inertial parameters of connecting rods was verified.The method can be used in the situation where high accuracy is needed.

Key words： three-cylinder engine excitation modelling inertial parameters Lagrangian multiplier method

收稿日期: 2017-12-18 出版日期: 2019-01-15

引用本文:

左曙光1，王珺1，周大为1，阎礁2，安一领2，吴旭东1. 考虑连杆惯性参数的三缸发动机激励建模与分析[J]. 振动与冲击, 2019, 38(2): 247-252.
ZUO Shuguang1， WANG Jun1， ZHOU Dawei1， YAN Jiao2， AN Yiling2， WU Xudong1. Modelling and analysis on the vibration excitation of a three-cylinder engine considering inertial parameters of connecting rods. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(2): 247-252.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I2/247

[1] 郭荣, 章桐. 汽车动力总成悬置系统[M]. 上海: 同济大学出版, 2013.
GUO Rong, ZHANG Tong. Automotive Powertrain Mounting System[M]. Tongji University Press, Shanghai, 2013.
[2] 陈志远. 发动机激励分析与动力传动系扭振仿真软件开发[D]. 长春: 吉林大学, 2016.
CHEN Zhi-yuan. The Analysis of Engine Excitation and Simulation Software Development of Powertrain Torsional Vibration[D]. Jilin University, Changchun, China, 2016.
[3] Patterson D. Engine Torque and Balance Characteristics[C]// SAE International Congress and Exposition .[S.l.]:SAE Technical Paper 821575, 1982.
[4] 张健, 杨啟梁, 胡溧, 等. 基于ADAMS的12自由度动力总成悬置系统怠速隔振分析[J]. 汽车技术, 2013, (01): 38-41.
ZHANG Jian, Yang Qi-liang, Hu Li, et al. Idle Vibration Isolation Analysis of Twelve Degrees of Freedom Power-train Mounting System Based on ADAMS[J]. Automobile Technology. 2013, (01): 38-41.
[5] Suh K H, Lee Y K, Yoon H k. A Study on the Balancing of the Three-Cylinder Engine with Balance Shaft[C]// SAE 2000 World Congress.SAE Technical Paper 2000-01-0601, 2000.
[6] Hoffman D M W, Dowling D R. Fully Coupled Rigid Internal Combustion Engine Dynamics and Vibration—Part I: Model Development[J]. Journal of Engineering for Gas Turbines and Power, 2001, (123): 677-684.
[7] Fakhari V, Ohadi A. Robust control of automotive engine using active engine mount[J]. Journal of Vibration and Control, 2012, 19(7): 1024-1050.
[8] 何智成, 刘红谱, 郝耀东, 等. 基于基于动力总成－整车模型的发动机等效激励参数识别[J]. 振动与冲击, 2017, 36(18): 154-163.
HE Zhi-cheng, LIU Hong-pu, HAO Yao-dong, et al. Parameter identification of engine equivalent excitation based on the model of a power train-full vehicle[J]. Journal of Vibration and Shock, 2017, 36(18): 154-163.
[9] 刘晓昂. 基于整车振动控制的动力总成悬置系统设计方法[D]. 广州: 华南理工大学, 2016.
LIU Xiao-ang. Design methods of the powertrain mounting system based on vibration control of vehicle level[D]. South China University of Technology, Guangzhou, China, 2016.
[10] 刘延柱, 潘振宽, 戈新生. 多体系统动力学(第二版)[M]. 北京: 高等教育出版社, 2014.
LIU Yan-zhu, PAN Zhen-kuan, GE Xin-sheng. Dynamics of Multibody Systems (Second Edition)[M]. Higher Education Press, Beijing, China, 2014.
[11] Shangguan W B, Liu X A, Lv Z P, et al. Design method of automotive powertrain mounting system based on vibration and noise limitations of vehicle level[J]. Mechanical Systems & Signal Processing, 2016, 76–77:677-695.
[12] 上官文斌, 陈大明, 叶必军, 等. 带防扭拉杆的动力总成悬置系统位移计算方法[J]. 汽车工程, 2012, 34(9): 799-805.
SHANGGUAN Win-Bin, CHEN Da-Ming, YE Bi-jun, etal. A Calculation Method for the Displacements of Powertrain Mounting System with Torque Strut[J]. Automotive Engineering, 2012, 34(9): 799-805.
[13] 上官文斌, 吴杰. 含液阻悬置振动系统的时域响应计算与优化方法[J]. 机械工程学报, 2008, 44(9): 106-112.
SHANGGUAN Win-Bin, WU Jie. Time-Domain Response Calculation and Optimization Methods for Vibration Systems Including Hydraulic Engine Mounts. Chinese Journal of Mechanical engineering, 2008, 44(9): 106-112.