Optimization of the Input Shaft Torsional Amplitude of a DCT Gearbox

Zhang Guihui; Shi Lei; Ma Junming; Wang Xiangwen; Sun Hongming; Dong Liyun

doi:10.16578/j.issn.1004.2539.2024.04.020

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Optimization of the Input Shaft Torsional Amplitude of a DCT Gearbox

Development·Application | 更新时间：2024-04-19

- Optimization of the Input Shaft Torsional Amplitude of a DCT Gearbox
- Journal of Mechanical Transmission Vol. 48, Issue 4, Pages: 148-153(2024)
- 作者机构：
  
  吉林大华机械制造有限公司，吉林长春 130103
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2024.04.020
  CLC：
- Published：15 April 2024，
  
  Received：27 December 2022，
  
  Revised：21 February 2023，
扫描看全文
张贵辉,石磊,马俊明等.某DCT变速箱输入轴扭振幅值优化[J].机械传动,2024,48(04):148-153.

Zhang Guihui,Shi Lei,Ma Junming,et al.Optimization of the Input Shaft Torsional Amplitude of a DCT Gearbox[J].Journal of Mechanical Transmission,2024,48(04):148-153.
张贵辉,石磊,马俊明等.某DCT变速箱输入轴扭振幅值优化[J].机械传动,2024,48(04):148-153. DOI： 10.16578/j.issn.1004.2539.2024.04.020.

Zhang Guihui,Shi Lei,Ma Junming,et al.Optimization of the Input Shaft Torsional Amplitude of a DCT Gearbox[J].Journal of Mechanical Transmission,2024,48(04):148-153. DOI： 10.16578/j.issn.1004.2539.2024.04.020.

摘要

汽车传动系的扭振会造成车内轰鸣或异响，扭振激励一般来自发动机的工作主阶次，通过扭振减振器向变速箱传递。因此，变速箱输入轴的扭振幅值是控制整个传动系扭振问题的第一要素。某款乘用车搭载6速湿式双离合变速箱（Wet Double Clutch Transmission，WDCT），测得2挡至6挡的变速箱输入轴扭振幅值最大达494.38 rad/s

，不满足设计要求400 rad/s

。为解决变速箱输入轴扭振幅值过大问题，利用AMESim软件搭建包含双质量飞轮扭振减振器的全油门驱动工况下的扭振分析模型，以实车采集的发动机转速波动信号为激励源，通过仿真分析确定了双质量飞轮的初、次级质量转动惯量、扭转刚度、基础阻尼力矩及自由转角对变速箱输入轴扭振幅值的影响；通过正交试验，得到了传动系的优化设计方案，并通过实车验证了优化方案的有效性。该研究方法和思路为包含双质量飞轮扭振减振器的汽车传动系扭振优化提供了解决方案。

Abstract

Torsional vibration of the automobile transmission system may cause roar or abnormal noise in the car. Torsional vibration excitation generally comes from the main order of the engine and is transmitted to the gearbox through torsional vibration damper. Therefore

the torsional amplitude of the gearbox input shaft is the first factor to control the torsional vibration of the whole transmission system. A passenger car is equipped with a 6-speed wet double clutch transmission (WDCT). The maximum torsional amplitude of the input shaft of the gearbox from 2nd gear to 6th gear has reached 494.38 rad/s

which does not meet the design requirement of 400 rad/s

. In order to solve the problem that the torsional amplitude of the gearbox input shaft is too large

this study uses AMESim software to build a torsional vibration analysis model with dual mass flywheel torsional vibration damper under full throttle driving condition

taking the engine speed fluctuation signal collected by a real vehicle as the excitation source. Through simulation analysis

the influences of the primary mass moment of inertia

secondary mass moment of inertia

torsional stiffness

basic damping torque and free rotation angle of the dual mass flywheel on the torsional amplitude of the gearbox input shaft are determined

and the optimization scheme of the transmission system is obtained through orthogonal experimental design

and the effectiveness of the optimization scheme is verified by a real vehicle. The research methods and ideas of this study provide a solution for the torsional vibration optimization of the automobile transmission system with dual mass flywheel torsional vibration damper.

关键词

扭振双质量飞轮AMESim仿真正交试验

Keywords

Torsional vibrationDual mass flywheelAMESim simulationOrthogonal experiment

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