Aiming at the problem of steering wheel vibration in the acceleration process of a SUV,the most obvious condition of steering wheel vibration was found through subjective evaluation,and the relevant vibration color map and section were compared and analyzed.The problem was initially determined to be caused by the drive shaft excitation.Using 3D point cloud to scan the transmission shaft angle in the ready state,it was found that it was seriously beyond the design state of the transmission shaft.Install the automatic programming tool(APT)of the dual clutch transmission(DCT)with a large angle pitch drive shaft in the problematic vehicle,solving the problem of steering wheel vibration during acceleration,but it involved huge change costs in the later stage.Therefore,under the condition of not changing the stiffness and length of the shock absorber spring,by changing the pitch of the shock absorber spring,changing the position of the wheel center,and finally changing the transmission shaft angle,the steering wheel vibration problem can be significantly improved without increasing the cost,and the engineering plan to solve this problem is finally proposed.
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