Emissions

There are four exhaust gases that get released from cars. Carbon monoxide, carbon dioxide, oxides of nitrogen and hydro carbons. These are harmful to people and to the environment so in order to bring down these gases, vehicles are equipped with "catalytic converters" which takes those harmful gases and transfers it to less harmful gases like carbon dioxide and steam(H20). Another way vehicles lessen the amount of harmful gases is by EGR (Exhaust Gas Recirculation). This recirculates a portion of exhaust and runs it back to the combustion chamber. This also gives a cooler, more complete burn of fuel.