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The Emissions Control System Of Your Car
The following is a simple look at the emissions control system of your personal automobile, which is something many don't understand.
First, let’s talk about why there is a need to control the emissions output of vehicles with gasoline or diesel powered engines. Nitrogen oxide and carbon monoxide are byproducts of fuels refined from petroleum burned to power the engine of a car. When these gasses are released into the atmosphere of the earth, they have very damaging and irreversible effects. The harmful gasses entering the atmosphere are not all created from the burning action of petroleum-based fossil fuels; hydrocarbons are a harmful gas emitted by the vaporization of the fuel stored in the fuel tank and from the crankcase.
In 1977, the U.S. government passed the clean air act setting limits to how much of each pollutant was allowed to be released by a car. Automobile manufacturers responded by adding pollution control devices to cars as standard equipment. In 1981, the first of a new generation of self-adjusting engines controlled by computers called feedback fuel control systems was introduced to the market place. Oxygen sensors were installed in the exhaust system to measure the fuel content being expelled with the exhaust gasses. The computer would then adjust the fuel to air mixture to help compensate for the unused fuel loss.
With the progressive maturity of the emissions control system computers used in automobiles, they began to be used to adjust the ignition spark timing “on the fly” as well as the other emissions control system equipment.
The emissions control system of your car consists of no less than five different standard equipments parts controlling five different emissions contributing factors. These five standard emissions control equipment parts are: catalytic converter, PCV valve, EGR valve, evaporative controls and air injection. The catalytic converter may be the single most important part of the emissions control system.
The catalytic converter is part of the exhaust system installed before the muffler.
Inside of the catalytic converter are pellets or a honeycomb chamber made of platinum or palladium. The platinum or palladium acts as catalyst, speeding up the chemical process of the hydrocarbons and carbon monoxide being oxidized and converted into carbon dioxide and H2O (water). When this process takes place, heat is produced. The more pollutants in the exhaust, the more heat produced. Excessive amounts of heat with cause the catalytic converter to destroy itself. Because lead will coat the platinum or palladium, rendering its efficiency to an almost useless level, all fuels in the USA are now unleaded.
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Emissions Control News
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Tenneco Emissions Control Workshop Brings Profitable Repair Strategies to ... - AftermarketNews.com (AMN)
Tenneco Emissions Control Workshop Brings Profitable Repair Strategies to ... AftermarketNews.com (AMN) Tenneco's Walker Emissions Control Diagnostics Workshop now features an even heavier emphasis on diagnostic emissions control strategies and diagnosing drivability repair issues. Tenneco has partnered with Automotive Training Group (ATG) to bring this ... |
B&W Named Environmental Technology Supplier for Luminant Power Plant Fleet - MarketWatch (press release)
B&W Named Environmental Technology Supplier for Luminant Power Plant Fleet MarketWatch (press release) During the fourth quarter of 2011, B&W PGG signed contracts totaling approximately $65 million to design and supply emissions control equipment for four of Luminant's coal-fired power plants, including construction at two of these plants. |
IMO to discuss CO2 curbs for ships, industry frets - Reuters
IMO to discuss CO2 curbs for ships, industry frets Reuters The European Commission has threatened to take its own measures, such as including the shipping sector in its emissions trading scheme, if a solution to control rising shipping emissions by the IMO is not strong enough. Some of the carbon-cutting ... |
Fuel Tech to Present at Brean Murray, Carret & Co. 2012 Global Resources ... - MarketWatch (press release)
Fuel Tech to Present at Brean Murray, Carret & Co. 2012 Global Resources ... MarketWatch (press release) WARRENVILLE, Ill., Feb 22, 2012 (BUSINESS WIRE) -- Fuel Tech, Inc. (NASDAQ:FTEK) , a world leader in advanced engineering solutions for the optimization of combustion systems and emissions control in utility and industrial applications, announced today ... FUEL TECH INC. : Feb. 22, 2012 Fuel Tech to Present at Brean Murray, Carret ... |