点熄火工况下动力总成悬置隔振性能的优化方法

打开文本图片集

中图分类号：U464.13；U461.4 文献标志码：A 文章编号：1000-582X（2025）07-050-12

Optimization methods to enhance vibration isolation performance of a powertrain mounting system at key-on/off conditions

YIN Zhihong'，LIN Shuo'，SHANGGUAN Lijian² （1.School of Mechanical and Automotive Engineering，South China University of Technology，Guangzhou 510640，P.R. China; 2. Ningbo Tuopu Group Co.， Ltd.， Ningbo， Zhejiang 31580o，P.R. China）

Abstract：Hybrid electric vehicles often experiences key-on/off conditions. Increasing vibration isolation performance of the powertrain mounting system （PMS）under key-on/off conditions is one of the important measures to enhance NVH（noise，vibrationand harshness）performance of the vehicle.A model with 13 DOFs for PMS was established，and acceleration of the mounts at active side was estimated under the key-on/offcondition. Also，vibration acceleration of the mounts at positive side，passive side and the seat rail were measured.The comparison between calculations and experiments validated the proposed model. Deterministic and uncertain optimization methods for reducing the vibration dose value of longitudinal acceleration of the powertrain were proposed，and the mount parameters were the design variable.Keyon/of experiments were carried out to validate the proposed methods.The experimental results show that the two optimization methods can effectively enhance the vibration performance of the PMS，and the uncertain optimization method can make the PMS more robust and effectively deal with the influence of parameter uncertainty.

Keywords： powertrain mounting system;key-on/of;transient vibration performance;analysis and optimization; interval uncertainty

混合动力汽车（hybrid electricvehicle，HEV）的能量控制策略会引起发动机点熄火工况频繁出现，甚至会在乘员毫无预期的情况下发生。（剩余13243字）