Hyundai and Kia have unveiled an experimental Plasma Care UVC system that can disinfect the air and surfaces in a car's interior while driving – even with passengers inside. The companies claim this is the first such technology specifically designed for automobiles.
The development is based on Far UVC with a wavelength of 200–230 nanometers. Unlike traditional ultraviolet light, this range, according to the automakers, can destroy viruses and bacteria, but does not penetrate deeper than the protective stratum corneum of human skin, making it safe for use in the presence of people.
Previously, similar technologies were proposed for hospitals, schools, and public spaces. However, Hyundai and Kia engineers had to adapt the system for cars, where the space is significantly smaller, passengers are closer to the radiation sources, and a large amount of sensitive electronics are located around.
Instead of conventional ultraviolet LEDs, the developers used a plasma lamp, which works more efficiently in the Far UVC range. In addition, the system received an additional protective filter that prevents the emission of more dangerous radiation.
Tests were conducted in a special chamber with a volume of about eight cubic meters, simulating a car interior. According to Hyundai and Kia, the concentration of viruses in the air decreased by 96.8% in 30 minutes.
In laboratory conditions, the system destroyed 99.9% of pneumonia-causing bacteria in just 30 seconds, and completely eliminated them after one minute. Another test was conducted in a Kia PV5 electric van – after 40 minutes of operation, the level of E. coli in the cabin decreased by 99.9%.
In addition to combating microorganisms, the developers expect that the technology will help reduce unpleasant odors in the cabin. It may be especially useful for taxis, carsharing, and commercial vehicles, where the car is used daily by dozens of different passengers.
However, the technology has not yet reached mass production. Hyundai and Kia continue testing and emphasize that the system can only be implemented after obtaining the necessary regulatory approvals.
In addition, the question remains open about the effect of prolonged exposure to even safe ultraviolet light on interior trim materials. It is known that ordinary ultraviolet radiation accelerates the aging of plastic, leather, and fabrics over time, so engineers still need to confirm that the new system will not affect the durability of the interior.