以车型系列中动力总成悬置系统的固有特性优化和位移控制为设计要求,以悬置的静刚度和安装位置作为优化变量,提出了在共用一套结构相同的悬置基础上的车型系列动力总成悬置系统固有特性的优化方法.论述了车型系列中动力总成悬置系统的位移控制设计思想,以车型系列中质量最大的动力总成作为基准,设计各个悬置的力-位移特性曲线,然后对其它动力总成悬置的位移进行核算.最后给出了一计算实例,结果表明优化后的同一套结构的悬置在车型系列中各动力总成上均能获得良好的固有频率分布,同时能满足在不同行驶工况下,各个动力总成的位移控制要求.%Taking natural properties optimization and displacement control of powertrain mounting systems in a vehicle model series as design requirements and its static stiffness and mounting position as optimization variables , a scheme of natural properties optimization for the powertrain mounting systems in a vehicle model series based on a common set of mounting structure is proposed. The design idea of displacement control for the powertrain mounting systems in a vehicle model series is discussed. With the powertrain mounting system having maximum mass in a vehicle model series as baseline, the force-displacement characteristic curve of each mount is designed and then the mount displacements of other powertrains are checked. Finally a calculation example is given and the results show that after optimization all mounts with common set of structure in each powertrain in a vehicle model series can have a good distribution of natural frequency and meet the displacement control requirements of each power-train in different driving conditions.
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