System for Active Control of Air Pollutants in Vehicle Cabins

In modern airtight vehicles, the concentration of air pollutants, including CO2, can build up quickly, with some studies showing a rise above 2500 ppmv of CO2 in mere minutes in occupied vehicles. This is particularly noticeable during recirculated air operation and in urban or hot climates where cabin air is recirculated to enhance HVAC efficiency. At these high levels, drivers may experience drowsiness, reduced attention span, slower reaction times and diminished driving performance.

 

Researchers at Arizona State University have developed a novel system to address the rapid buildup of air pollutants in airtight vehicle cabins. This system implements a modular, cartridge-based pollutant sorption system coupled with sensors and controllers, which can be installed inside vehicle cabins. The sorption system not only captures air pollutants, but also binds them to allow cabin pollutant levels to stay low for a longer period of time. An indicator LED alerts users when the cartridge becomes saturated and needs to be replaced. 

 

This system actively maintains safe air quality levels and reduce the effects seen by high levels of air pollutants.