piston rod for car shock absorber's

Electric vehicles are typically significantly heavier than those with internal combustion engines, requiring a stiffer suspension setup to ensure ride stability. 

Q: Please describe in detail the features and effects of applying the G-type bushing of the vertical hydraulic lower control arm, which is the first of its kind adopted by Hyundai Motor Company.
Senior Researcher Xu Zaixu | Unlike conventional rubber bushings, hydraulic bushings effectively combine the elasticity of rubber with the resistance to fluid flow, ensuring an internal seal. Conventional rubber bushings are more elastic, which further reduces vibrations caused by uneven road surfaces. In other words, this type of bushing is used exclusively in luxury vehicles because it absorbs more road vibrations from the wheels, reducing the vibrations and shocks transmitted to the driver, thereby ensuring a comfortable and enjoyable driving experience.
Initially, the automaker used a vertical G-type hydraulic bushing at the rear of the lower control arm. This sophisticated vertical hydraulic bushing was designed to perfectly achieve the desired functions, such as durability, damping, and improved handling. However, after eight rounds of testing and refinement of the hydraulic bushing design, the IONIQ 6 ultimately achieved superior ride comfort and responsive handling. Even those less concerned with ride comfort will appreciate the IONIQ 6's excellent road vibration damping.
Q: Are the characteristics of the frequency-sensitive high-performance damper (SDC3) comparable to those of shock absorbers currently used in vehicles with internal combustion engines?

Senior Researcher Xu Zaixu | The SDC3 IONIQ 6's exterior is identical to that of a gasoline-powered vehicle, but its internal structure has been optimized and designed differently. Typically, shock absorbers prevent the vehicle from bouncing up and down when driving on uneven roads or when cornering. This is because electric vehicles are significantly heavier than comparable combustion engine vehicles, and their vertical motion generates more energy due to their weight. Therefore, traditional hydraulic shock absorbers have limitations in controlling this motion. This creates a feeling of instability for the driver when driving at high speeds over small bumps.
The SDC3 improvement includes the addition of a frequency-sensitive valve located below the fixed valve, which controls the shock absorber's speed of movement within the existing Piston Rod. Furthermore, a new channel design allows oil to flow from the piston rod into the frequency-sensitive valve chamber. This improves damping performance for low-frequency vibrations.