1. Investigation on a semi-active hydraulic damping strut to reduce vehicle in situ shift vibration
- Author
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Xia-Guang Zeng, Wen-Can Zhang, and Dao-Yong Wang
- Subjects
In situ ,0209 industrial biotechnology ,Materials science ,Automatic transmission ,business.industry ,Mechanical Engineering ,Aerospace Engineering ,02 engineering and technology ,Structural engineering ,Shock (mechanics) ,law.invention ,Vibration ,Semi active ,020303 mechanical engineering & transports ,020901 industrial engineering & automation ,0203 mechanical engineering ,Mechanics of Materials ,law ,Automotive Engineering ,Torque ,General Materials Science ,business - Abstract
In order to reduce the shock and vibration caused by torque disturbance of the gearbox in vehicles equipped with automatic transmission in the process of in situ shift, a novel semi-active hydraulic damping strut is introduced in the powertrain mounting system. The dynamic response evaluation indexes of vehicle in situ shift are put forward, and a 13-degree of freedom vehicle dynamic model including the semi-active hydraulic damping strut is established. The optimized dynamic characteristic parameters are acquired according to the principle of sharing force and the 13-degree of freedom vehicle dynamic model. The dynamic response evaluation indexes with and without the semi-active hydraulic damping strut are calculated using the 13-degree of freedom vehicle dynamic model in the process of in situ shift, and the calculation results show that the vibration of a vehicle can be reduced by the introduction of a semi-active hydraulic damping strut. Experiments are carried out to analyze the vibration response of the vehicle with and without a semi-active hydraulic damping strut, and the results show that the shock and vibration of the vehicle are reduced by introducing the semi-active hydraulic damping strut. The theoretical calculation values of active-side acceleration of the engine mount and torque strut are consistent with the experimental values, which show that the 13-degree of freedom vehicle dynamic model is reasonable.
- Published
- 2019