Investigation and Improvement of Middle Row Seat Shaking of an MPV
The middle row seat shakes when a multi-purpose vehicle(MPV)is driving.Through the test and analysis of the vehicle transmission path and the seat body,it was found that the rear suspension vi-bration damper was the main transmission path,and the Y-17 Hz mode of the seat body was the main response.The mounting rail,cushion frame,and backrest frame of the seat were reconstructed,and the results show that increasing the mass of the backrest frame can improve the shaking of the middle row seat.By adding vibration absorbers for different frequencies to the backrest,the seat vibration is re-duced by 53%,which is acceptable.