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About Car Emissions






     A verifying test is performed in the emission laboratory to substantiate the result. And this process keeps repeating until favorable results are obtained. Many parameters in the vehicle have great impact on CO2 emissions and this requires close attention to many of the systems which we normally do not connect to classic emission testing. For example: brake drag has large impact on the variability of the test results.

To ensure exact measurements, the emission laboratory observes strict standards. For example, a test on a car can only be re-run once the temperature of the car has reached the testing temperature of the previous test. Naturally, the temperature in the garage where the cars are stored is also carefully regulated, and kept at 25º Centigrade.

The number one emission problem is CO2 and this is causing our atmosphere to crumble apart and it's not good for anyone. Everyone needs to begin to realize that they need to find alternative means of energy to power their vehicles or they need to stop using their vehicles as much.

Almost all of the car manufactures in North America have announced that they will be releasing some sort of alternative energy model vehicle throughout the year. There are different methods of running these vehicles on different energy sources and they are all a lot better for the environment. With gas prices rising so high it's also a pretty big money saver for anyone who is spending hundreds of dollars on gas. With a green car that runs off of an alternative energy source you will save on the money you'd otherwise be spending on gas to run your vehicle.

The savings on gas over the long haul will be greater then the cost of the green cars being introduced to us and it means that buying a green car is the smart choice. It not only will help the environment for our children but it will also save us for having to buy gas off of crooks, who continually raise the price of gas.
Both petrol and diesel have a blend of hydrocarbons composed of hydrogen, oxygen, and carbon atoms. Nitrogen present in the air passes through the engine and blends with the oxygen to produce harmful gases.

The main car pollutants that have negative effects on the environment are:

- Carbon Monoxide: Carbon monoxide is a harmful gas that is produced as a result of incomplete burning of hydrocarbon based fuels in the internal combustion engine. Maximum amount of carbon monoxide is produced when the ratio of air to fuel is low during combustion. This mainly occurs when cars are not maintained and tuned properly. It is believed that in urban area the contribution of carbon monoxide to the environment by passenger cars is about 90%.

- Nitrogen Oxide: Under high pressure and temperature condition, nitrogen and oxygen reacts together to form nitrogen oxides. Nitrogen oxides are considered to be precursors to the formation of ozone and are believed to contribute maximum to acid rain. This poisonous gas is believed to make up about 72% of the total gases contributing to global warming.

- Hydrocarbons: These also form one of the most poisonous emissions from the automotive. These are composed of different molecular weight compounds and some of them are carcinogenic. Prolonged exposure to such substances is of great danger to human. In case of environment it contributes to the depletion of ozone layer, thereby creating an ecological imbalance.

Have you ever wondered that the diesel emissions laboratory has an extremely accurate mass metrology laboratory for measuring particles? Furthermore, the laboratory room is built on a 150 ton concrete slab, and the scales are on a heavy marble table, to provide the stability needed. There are special requirements for this room because the particle emissions from a modern diesel engine are so low that the weight is comparable to what the fat from a finger print would weigh. To cite an example, only one person works there, and he has to wear protective clothing not to affect the scales.




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Ekrem Gundogdu writes articles about different subjects, including emisyon. To read his articles see his periyodik kontroller website.


Posted on 2010-01-12, By: *

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Note: The content of this article solely conveys the opinion of its author,


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