ເພື່ອເລັ່ງຄວາມໄວໃນການສັ່ນສະເທືອນຂອງເຟຣມແລະຮ່າງກາຍແລະປັບປຸງຄວາມສະດວກສະບາຍໃນການຂັບຂີ່ຂອງລົດ,ເຄື່ອງດູດຊshockອກໄດ້ຖືກຕິດຕັ້ງຢູ່ໃນລະບົບລະງັບລົດສ່ວນໃຫຍ່.
ລະບົບການດູດຊຶມອາການຊshockອກຂອງລົດຍົນແມ່ນປະກອບດ້ວຍສະປິງແລະກເຄື່ອງດູດຊອກ. The ເຄື່ອງດູດຊອກ is not used to support the weight of the car body, but to suppress the shock when the spring rebounds after absorbing the shock and absorb the energy of the road impact. The spring plays the role of alleviating the impact, changing the "high energy one impact" into "small energy multiple impact", and the ເຄື່ອງດູດຊອກ gradually reduces the "small energy multiple impact". If you have driven a car with a broken ເຄື່ອງດູດຊອກ, you can experience the bouncing of the aftermath of the car going through every pothole and ups and downs, and the ເຄື່ອງດູດຊອກ is used to suppress this kind of bounce. Without a ເຄື່ອງດູດຊອກ, the rebound of the spring cannot be controlled. When the car encounters a rugged road, it will have a serious bounce. When cornering, the tire's grip and tracking will be lost due to the vibration of the spring.