Nissan Catalytic Converters

Written by Charles Peacock
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If you drive a Nissan that has failed emissions or smog inspection, it's likely that you need to replace your catalytic converter. This is a relatively inexpensive procedure that not only ensures a smooth running engine, but it also makes sure that your car is not needlessly polluting the atmosphere while you drive. Staying on top of catalytic converter repairs is an important and responsible thing to do.

How Catalytic Converters Clean Your Nissan's Exhaust

Car exhaust contains a lot of different chemicals--some are dangerous, some are harmless. Water vapor is an example of a harmless by-product of the combustion that takes place inside your car's engine. Unfortunately, there are three main chemicals that your engine produces in addition to water that can harm humans and the environment. Catalytic converters are designed to keep these chemicals from being released.

Nitrogen oxides are some of the nastiest pollutants produced by your car's engine. They are the chemicals that cause smog and acid rain. Your Nissan's catalytic converter contains a special "reduction catalyst" that splits these nitrogen oxides into their main components: nitrogen and oxygen. These gases are totally harmless and are naturally present in the atmosphere.

Carbon monoxide is a colorless and odorless gas that also happens to be highly lethal. A special "oxidation catalyst" in your catalytic converter actually converts the carbon monoxide coming out or your engine into carbon dioxide. This gas is far less harmful for people or the environment, although it has been proven to contribute to global warming.

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