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| Research on vehicle vibration control with different shift time based on semi-active hydraulic damping strut |
| WANG Daoyong,XU Yanmin |
| School of Automobile, Guangdong Mechanical & Electrical Polytechnic, Guangzhou 510550, China |
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Abstract In this paper, the vibration control of vehicle with different shift time based on a semi-active hydraulic damping strut (HDS) is researched on how to reduce the shift time of vehicle in situ shift without increasing the shock and vibration of the vehicle. Firstly, the experimental and theoretical acceleration values of the active side of the engine mount and torque strut are compared and analyzed and the error is less than 20%, which verifies the effectiveness of the 13-DOFs vehicle dynamics model. Secondly, the semi-active HDS in the mounting system can effectively reduce the shock and vibration in the process of in situ shift quickly according to the dynamic response analysis and experimental test. Finally, the dynamic response characteristics of the vehicle with different shift time are analyzed by combining theory and test. The results showed that the shift shock and vibration caused by in-situ shift are mainly transmitted to the vehicle through the transmission mount and the torque strut. The transmission mount is insensitive to the increase of the damping of the mounting system, and the engine mount is insensitive to the vibration of the powertrain. The introduction of semi-active HDS in the powertrain mounting system can reduce the in-situ shift time and fuel consumption.
Key words：in situ shift; shift time; shock and vibration; semi-active hydraulic damping strut; vibration control
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Received: 08 October 2021
Published: 28 October 2022
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