Aiming at the problems of extremely high road noise pressure and poor road noise quality of new energy five-seater SUV in the prototype stage,an optimization scheme for road noise control system of new energy vehicles is proposed.Firstly,by studying the excitation of road noise generation,locking and optimizing the tire body and reducing the stiffness of the bushing are verified.Then,the subframe is changed from rigid connection to bushing connection to optimiz e road noise,and the road noise is optimized by 2.8dB(A)under the condition of 60km/h rough road;finally,the tire body is analyzed to find out the influencing factors of road noise"rumbling"sound and tire cavity sound,and find the optimal parameters.The experimental results show that the noise reduction effect is achieved by optimizing the noise through experimental tests,which has certain reference significance for the optimization design of vehicle road noise performance.
NETL
NSTL
维普
万方数据
