某越野车发动机舱结构方案优化

Scheme Selection of Sheet Metal Parts for a Small Batch Project of Off-road Vehicle

新项目开发初期,在发动机舱传统方案基础上进行分析和方案优化,把传统前轮罩结构和连接框架结构进行合并,用先进内高压成形工艺的管梁结构替代,零件数量减少,实现了轻量化,并且提高了碰撞安全性能、弯曲刚度和扭转刚度。另外,从零件成本、组装成本和工装成本上,对两个方案进行经济性对比分析,并计算出成本平衡点,综合考虑了某越野车项目生命周期的产量,最终确定优化方案的可行性,相比较于发动机舱传统方案,优化方案生命周期的产量内,可以节约成本328.5万元,不仅实现了新技术应用、满足轻量化要求,而且节约了成本。

The early stage of new project development,on the conventional scheme of the forward engine room,to carry out all aspects of analysis and scheme optimization.combine the front wheel housing with the connecton frame,using tube beam structure of internal high pressure forming process instead,the number of parts is reduced and the weight is lightened.at the same time,the collision safety performance,bending stiffness and torsion stiffness are improved.in addition,the economy of the optimization scheme is analyzed,from the parts cost,assembly cost,and tooling cost on the comparative analysis,the cost equilibrium point has been calculated.the output of life cycle of an off-road vehicle project is considered comprehensively,and use the method of multi-scheme economic analysis,finally,the feasibility of the optimization scheme is determined.compared with traditional method,in the life cycle,the optimization scheme can save the cost of 3.285 million yuan,it not only realizes the application of new technology,meets the requirements of lightweight,but also saves the cost.