Harmful gases such as formaldehyde and benzene released from interior decorative materials in car pose a serious threat to passenger health.Aiming at the problem of the lack of systematic research on in-vehicle air quality

Fluent software and computational fluid dynamics(CFD)are utilized to evaluate the effects of different purification technologies and installation locations on air purification effects based on the standard

k-ε

model.A set of universal in-vehicle air purfication program is given.The study points out that photocatalytic and negative ion generator technologies are most effective in reducing pollutants such as formaldehyde and benzene.When the car is full

the photocatalyst technology together with the purifier placed at the armrest bo

x can significantly reduce the concentration of formaldehyde in the breathing zone of each occupant.