INSIDE THE REDESIGNED GENESIS GV70: NOISE, VIBRATION AND HARSHNESS
SEOUL, Aug. 20, 2024 — After nearly four years on the road, Genesis has released a redesigned GV70 with added luxury details and convenience features, aiming to provide a more relaxed driving experience.
Research engineers from the Namyang R&D Center gathered with local media last June, a month after the new model was launched in Korea, to introduce the enhancements. In this second of a two-part series, the Genesis Newsroom shares key highlights from the event, focusing on noise, vibration and harshness (NVH).
Taehwan Kim, Senior Research Engineer at the Genesis NVH Test Team, stressed during the session that several changes were implemented to ensure noise-free, relaxing commutes in the redesigned GV70.
“The 21-inch wheels of the redesigned GV70 are equipped with sound-absorbing wheels that have been built with a hollow structure based on the Helmholtz principle, which effectively reduces tire resonance,” said Kim. “Dynamic dampers have also been added to the tailgate to suppress the booming noise during driving.”
ANC-R
To minimize road noise, Kim mentioned Active Noise Control-Road (ANC-R) as a key technology in the newly designed GV70. ANC-R detects road noise entering the interior through accelerometers and microphones, then generates anti-phase sound waves through an algorithmic calculation in the controller, outputting them via speakers to cancel out the noise. The vehicle thus effectively suppresses low-frequency road noise below 500 hertz, improving serenity.
With the reduction of wind noise being another critical factor for ensuring a relaxing ride, double-laminated acoustic glass that features a noise-absorbing film in between two glass layers has been utilized in the new GV70. Filling the gaps between the vehicle body and door panels are triple-layered weatherstrips that further minimize noise intrusion.
High-Frequency Noise Reduction
On high-frequency noise reduction, the center tunnel pad area on the floor has been expanded to incorporate a dual sound-absorbing structure in the carpet section, while the bulkhead structure blocking engine noise has been further strengthened. Soundproof materials were extensively added around the rear door openings to improve noise insulation from the body and undercarriage.
Minimizing Vibrations
To mitigate vibrations felt through the hands while driving, a new steering wheel with increased weight and rigidity has been applied. The dynamic damper attached to the steering wheel has been increased by over 50 percent, resulting in improved absorption of vibrations transmitted from the road.
The 8-speed automatic transmission has also been structurally enhanced to reduce vibrations that occur during driving and gear shifts. The newly added Centrifugal Pendulum Absorber (CPA) in the transmission counters torsional vibrations caused by engine rotation, ultimately delivering a smoother ride.
Disclaimer: Specifications may vary depending on region. Please contact your local Genesis retailer for more information.