Analysis of dynamic characteristics of power transmission system of the P2 hybrid vehicle under different power source excitation

ZHANG Jing; ZHU Wenlong; LIU Changzhao; LUO Jian; GE Shuaishuai

doi:10.16578/j.issn.1004.2539.2025.03.014

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Analysis of dynamic characteristics of power transmission system of the P2 hybrid vehicle under different power source excitation

Test·Analysis | 更新时间：2025-03-20

- Analysis of dynamic characteristics of power transmission system of the P2 hybrid vehicle under different power source excitation
- Journal of Mechanical Transmission Vol. 49, Issue 3, Pages: 101-111(2025)
- 作者机构：
  
  1.中国北方车辆研究所，北京 100072
  2.重庆大学高端装备机械传动全国重点实验室，重庆 400044
  3.重庆理工大学车辆工程学院，重庆 400054
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2025.03.014
  CLC： TH113
- Received：04 December 2023，
  
  Published：15 March 2025
- 稿件说明：
移动端阅览
张静，朱文龙，刘长钊，等. 不同动力源激励下P2构型混动汽车动力传动系统动态特性分析［J］. 机械传动，2025，49（3）：101-111.

ZHANG Jing，ZHU Wenlong，LIU Changzhao，et al. Analysis of dynamic characteristics of power transmission system of the P2 hybrid vehicle under different power source ex［J］. Journal of Mechanical Transmission，2025，49（3）：101-111.
张静，朱文龙，刘长钊，等. 不同动力源激励下P2构型混动汽车动力传动系统动态特性分析［J］. 机械传动，2025，49（3）：101-111. DOI： 10.16578/j.issn.1004.2539.2025.03.014.

ZHANG Jing，ZHU Wenlong，LIU Changzhao，et al. Analysis of dynamic characteristics of power transmission system of the P2 hybrid vehicle under different power source ex［J］. Journal of Mechanical Transmission，2025，49（3）：101-111. DOI： 10.16578/j.issn.1004.2539.2025.03.014.

摘要

目的

动力源是传动系统重要的外部激励，需充分探究不同动力源对混动汽车动力传动系统动态特性的影响。

方法

首先，推导了四缸发动机和永磁同步电动机的动态驱动力矩，并将其表达成角位移的函数，建立了动力源动力输出模型；其次，基于有限元缩聚和集中参数动力学建模方法，建立了传动系统混合动力学模型，并对建模方法的准确性进行了试验验证；最后，基于耦合动力源和传动系统动力学模型，建立了混动汽车动力传动系统机电刚柔耦合动力学模型，使车辆分别以纯电动驱动模式、发动机驱动模式和联合驱动模式运行，分析了不同驱动模式下系统的动态响应特性，探究了发动机转矩波动、电动机转矩波动、发动机与电动机同时作用时的转矩波动对系统动态特性的影响。

结果

结果表明，电动机转矩波动与发动机转矩波动都会引起齿轮副啮合力矩振幅增大、轴承支反力振幅增大以及箱体轴承中心轨迹范围增大，并且电动机2倍基频和四缸发动机基频引起的振动是箱体轴承支反力振幅增大的主要原因。

Abstract

Objective

The power sources are important external excitations of the transmission system

so it is necessary to fully explore the influence of different power sources on the dynamic characteristics of the hybrid vehicle power transmission system.

Methods

Firstly

the dynamic driving torque of the four-cylinder engine and the permanent magnet synchronous motor was derived and expressed as a function of angular displacement

and the power output model of power source was established. Based on the finite element polycondensation method and the centralized parameter dynamic modeling method

the hybrid dynamic model of the transmission system was established

and the correctness of the modeling method was verified by tests. Finally

the rigid-flexible coupling dynamics model of the power transmission system of hybrid vehicles was established by coupling the power source and the drive system dynamics model

so that the vehicle can operate in pure electric drive mode

engine drive mode and combined drive mode respectively

and the dynamic response characteristics of the system under different drive modes were analyzed. The effects of engine torque fluctuation

motor torque fluctuation and simultaneous operation of engine and motor on the dynamic characteristics of the system were investigated.

Results

The results show that both engine and motor torque fluctuation will lead to the increase of gear pair meshing torque

bearing force and bearing center trajectory range

as well

the vibration caused by 2 times base frequency of motor and base frequency of four-cylinder engine is the main reason for the increase of the bearing force.

关键词

Keywords

references

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