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根据《乘用车正面偏置碰撞的乘员保护》法规要求进行碰撞试验和模拟分析,对车架进行加强改进设计,平头车吸能空间不足,可以利用的吸能部件特别少,前围等结构偏弱,乘员空间易受侵入,加入阻挡结构后又可能引起车架上翘,不加气囊,配备普通转向管柱和安全带,考虑到生产成本和工艺等影响因素,结构改进的限制较大,要达到法规标准难度很大。通过3个关键区域和3个优化设计来攻克难关,一是优化设计前部吸能块,降低整车加速度;二是优化设计腿部吸能块,降低大腿伤害指标;三是优化设计车架前部结构,综合考虑全宽和偏置形式。
Crash test and simulation analysis are carried out according to the laws and regulations of “Passenger Protection for Frontal Bias Collision of Passenger Car”, the frame is strengthened and improved to be designed, the energy consumption of the flat car is insufficient, the energy absorbing parts which can be used are particularly small, Weak, occupant space is vulnerable to intrusion, after adding the blocking structure may cause the frame upturned, without airbags, with ordinary steering column and seat belt, taking into account the production costs and processes and other factors, the structural improvement of the larger restrictions , To achieve regulatory standards is very difficult. Through three key areas and three optimized design to overcome difficulties, first, optimize the design of the front absorption block, reducing vehicle acceleration; second, optimize the design of the leg energy absorption block, lower thigh injury indicators; third is to optimize the design of the frame Front structure, considering the full width and offset form.