摘要
某混动车型在开发过程中,在缓加速工况以及95~110 km/h的高速巡航工况中,均出现制动踏板振动问题。进一步研究发现,踏板振动与发动机的2阶激励相关。通过发动机扭矩优化验证、悬置优化验证、车身传递函数分析以及制动踏板模态分析验证,从多个优化方案中,确定采用优化制动踏板模态方案。该方案使制动踏板模态避开了发动机激励频率,解决了整车的踏板振动问题。
In the development process of a hybrid model,the brake pedal vibration occurs in slow acceleration condition and high speed cruising condition of 95~110 km/h.Further research shows that the pedal vibration is related to the second order excitation of the engine.Through engine torque optimization verification,suspension optimization verification,body transfer function analysis,and brake pedal modal analysis verification,from a number of optimization schemes,the optimal brake pedal modal scheme is determined to adopt.The mode of brake pedal avoids the engine excitation frequency and solves the pedal vibration problem of the whole vehicle.
作者
齐凯
Qi Kai(R&D Center of Great Wall Motor Company,Baoding 071000)
出处
《中国汽车》
2023年第8期34-38,64,共6页
China Auto
关键词
混动车辆
踏板振动
模态
优化
hybrid vehicle
pedal vibration
mode
optimization
