On the car the air filter which can deodorize air is installed and clear it of pollen and dust.

The air filter consists of the deodorant surrounded with the dust filter. The deodorant deletes the aromas containing aldehyde, the dust filter detains small particles and a suspension.

Fig. 8.61. Air filter: 1 – profile of the air filter; 2 – main layer; 3 – deodorant; 4 – air filter

The air filter cannot be reused and has to be replaced periodically.