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Old 08-08-2010, 06:20 PM   #14
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Join Date: Jul 2009
Chapter/Region: VIC
Location: Burnaby
95 Legacy
That ugly 'spruce' green.


Originally Posted by 2010 WRX Limited View Post
5 zigen and Tora, your comments are appreciated.

Catalytic converters are nothing more than complex incinerators that use a three-way catalyst process to superheat unburned fuel as it travels through the car’s exhaust system. As a consequence there is increased green house gas emissions (GHG) in the form of carbon dioxide and nitrous oxide being expelled.
This is not correct. It uses the precious metals to catalyze a reaction not of unburnt fuel, but by-products of imperfect combustion. Principally carbon monoxide to carbon dioxide, and oxides of nitrogen into nitrogen and carbon dioxide. Maybe some unburnt fuel but that is not it's principal feature.

Sure it's from Wiki, but...

"Since 1981, three-way catalytic converters have been used in vehicle emission control systems in North America and many other countries on roadgoing vehicles. A three-way catalytic converter has three simultaneous tasks:
Reduction of nitrogen oxides to nitrogen and oxygen: 2NOx → xO2 + N2
Oxidation of carbon monoxide to carbon dioxide: 2CO + O2 → 2CO2
Oxidation of unburnt hydrocarbons (HC) to carbon dioxide and water: CxH2x+2 + [(3x+1)/2]O2 → xCO2 + (x+1)H2O"

You are probably thinking of the old RX-7 thermal reactor emissions system.

Edit: Disregard some of the above. My mistake was mixing up Nitrous Oxide (N2O) with Nitrogen Oxides (NO, NO2). However your definition of its operation by burning unburnt fuel is still incorrect.
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Last edited by Burnman; 08-08-2010 at 06:29 PM. Reason: Oops...
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