What is car emission:

Components of car emission:

       1.         Carbon monoxide

       2.         Hydrocarbones

       3.         Ozone oxides (Nox)\

       4.         Carbon dioxide

       5.         Lead ( plommilo-tra-etyle is added to car fuel in 0.04-0.07 g/l. When the mixture burns, lead gets out with air in the form of small solid materials of a diameter less than one micron.

       6.         Acrobeine (results from diesel engines)

       7.         Sulfur oxides (SOx)

 Main pollutants from car emissions are:

- Co

- Nox

- HC

- SOx

- Tetra-ethyl-lead

- Suspended solids

The U.S. Environmental Protection Agency (EPA) sets limits on how much of specific pollutants. These limits are known as the National Ambient Air Quality Standards (NAAQS). The standards help to ensure that people throughout the country have the same basic health and environmental protections. However, many U.S. cities are currently in violation of NAAQS. The primary emissions sources include on-road motor vehicles such as cars and buses; major and minor industries; and off-road motor vehicles such as construction equipment, boats, and planes. The CAAA set specific targets to reduce emissions from motor vehicles.