某混动车型加速工况油门踏板振动问题的优化  

Optimization of Accelerator Pedal Vibration in Acceleration Condition of a Hybrid Vehicle

作　　者：樊泽奇[1] 王龙[1] 李梓铭 连青飞 Fan Zeqi;Wang Long;Li Ziming;Lian Qingfei(R&D Center of Great Wall Motor Company,Hebei Province Automobile Technology Innovation Center,Baoding 071000)

机构地区：[1]长城汽车股份有限公司技术中心,河北省汽车技术创新中心,保定071000

出　　处：《中国汽车》2024年第7期47-51,共5页China Auto

摘　　要：某混动车型在项目开发过程中样车评价阶段,驾驶人员发现加速工况在特定发动机转速区间存在油门踏板振动大的问题。经客观数据测试,油门踏板振动主要与发动机2阶相关。基于“源—路径—响应”模型进行问题排查分析,确定发动机振动激励大、进气系统空滤橡胶垫隔振不足、制动踏板发生共振等综合原因共同导致问题发生。最终通过降低发动机扭矩及振动激励、优化空滤橡胶垫结构从而提高其隔振性能、调整制动踏板结构以降低振动响应等三方面优化,明显降低了油门踏板振动,最终解决该问题。In the prototype evaluation stage of a hybrid vehicle for the project development process,the driver found that the accelerator pedal vibration was large in a specific engine speed range under acceleration conditions.According to objective data test,the vibration of accelerator pedal is mainly related to the second order of engine.Based on the"source-path-response"model,the problem is investigated and analyzed,and it is determined that the comprehensive reasons such as large vibration excitation of engine,insufficient vibration isolation of air filter rubber pad of intake system and resonance of brake pedal lead to the problem.Finally,by reducing engine torque and vibration excitation,optimizing the structure of air filter rubber pad to improve its vibration isolation performance,and adjusting the structure of brake pedal to reduce vibration response,the vibration of accelerator pedal is obviously reduced,and finally the problem is solved.

关 键 词：混动车型 油门踏板 制动踏板 空滤橡胶垫 振动激励大 隔振不足 共振 

分 类 号：U469.7[机械工程—车辆工程]