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Study on the Influence of Dual-Rotor System with Micro-Speed Difference on Idle Vibration of AT Vehicle
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Xingquan Li1, 2, Jianghua Fu2, Xiaoli Jia1, Renwei Deng1, Hongcheng Li1, Hongjie Wei3
Automotive Engineer | 2024, (9) : 8 - 12
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Automotive Engineer | 2024, (9): 8-12
Study on the Influence of Dual-Rotor System with Micro-Speed Difference on Idle Vibration of AT Vehicle
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Xingquan Li1, 2, Jianghua Fu2, Xiaoli Jia1, Renwei Deng1, Hongcheng Li1, Hongjie Wei3
Affiliations
  • 1 Chang’an Auto Global R&D Center, Chongqing Chang’an Automobile Co., Ltd., Chongqing 401120
  • 2 Chongqing University of Technology, Chongqing 400054
  • 3 Chongqing Jiaotong University, Chongqing 400074
Published: 2024-09-15 doi: 10.20104/j.cnki.1674-6546.20240099
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The micro-speed difference dual-rotor system composed of a hydraulic torque converter and a crankshaft affects the idle twitch of an Automatic Transmission (AT) vehicle. Through the Hilbert transform of the dynamic unbalanced coupling excitation force of the dual-rotor system, it is revealed that the beat vibration of the component is the root cause of the regular idle twitch. The maximum twitch amplitude is the sum of the excitation forces, and the twitch time interval is the difference between the excitation force frequencies. The Automatic Dynamic Analysis of Mechanical Systems (ADAMS) model including engine, transmission and mounting system is established and simulated. The results show that the closer the vertical rigid body mode of the powertrain is to the excitation frequency, the greater the vertical first-order dynamic stiffness of the hydraulic mount and the greater the vibration amplitude. Therefore, the idle twitch can be improved by the frequency avoidance design of the Z-direction mode of the powertrain and the dynamic unbalance excitation frequency of the crankshaft, reducing the vertical dynamic stiffness of the hydraulic mount, and improving the vibration isolation performance of the mount system.

Dual-rotor system with micro-speed difference  /  Automatic Transmission (AT)  /  Idle  /  Twitch  /  Torque Converter  /  Engine
Xingquan Li, Jianghua Fu, Xiaoli Jia, Renwei Deng, Hongcheng Li, Hongjie Wei. Study on the Influence of Dual-Rotor System with Micro-Speed Difference on Idle Vibration of AT Vehicle[J]. Automotive Engineer, 2024 , (9) : 8 -12 . DOI: 10.20104/j.cnki.1674-6546.20240099
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doi: 10.20104/j.cnki.1674-6546.20240099
  • Online Date：2025-11-25
  • Published：2024-09-15
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  • Revised：2024-04-03
Affiliations
    1 Chang’an Auto Global R&D Center, Chongqing Chang’an Automobile Co., Ltd., Chongqing 401120
    2 Chongqing University of Technology, Chongqing 400054
    3 Chongqing Jiaotong University, Chongqing 400074
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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