A catalytic converter is a device used to reduce the toxicity of emissions from an internal combustion engine. This was widely introduced on series production automobiles in the US market for the 1975 model year to help with tightening EPA regulations on auto exhaust. Catalytic converters are most commonly used in motor vehicle exhaust systems. Catalytic converters are also used in forklifts, mining equipment, trucks, buses, trains, and many more well equipped engine machines.
The catalytic converter consists of several components. The core, or substrate in modern catalytic converters, this is most commonly known as ceramic honeycomb; stainless steel foil honeycombs are also used. The purpose the core provides is to support the catalyst and it is often call a catalyst support. The ceramic substrate was created by Rodney Bagley, Irwin Lachman, and Ronald Lewis at Corning Glass.
The washcoat was developed to make converters more efficient. A washcoat is a mixture of silica and alumina, when added to the core it forms a rough irregular surface which has a far greater surface area than the flat core surfaces. This then provides the converter core a larger surface are. Therefore, gives a more places for active precious metal.
Platinum is the most active catalyst used worldwide. It is not always suitable for all applications because on unwanted additional reactions and cost. Palladium and rhodium are two other precious metals that are used . Platinum and rhodium are used as a reduction catalyst, while platinum and palladium are used as an oxidization catalyst.
A catalytic converter involves so much with everything to diagnostics and regulations. It has also been proven device that has successfully helped in reducing the noxious tailpipe emissions. However, they may have some adverse environmental impacts in use.
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A sure sign that your catalytic converter is bad is when you notice a rattling noise. This rattling is mainly noticed when idling and when decrease in volume as speed is increased. You definitely want a high performance catalytic converter. You can search for Miller, A&B, DEC, and Bosal, which provide you with excellent high performance catalytic converters. Save on high performance catalytic converters when shopping with eBay.
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