Catalytic Converter

Material： Stainless steel
Type： Honeycomb
Model compatible： Modified exhaust
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The 3-way catalytic converter is installed between the exhaust pipe and the exhaust silencer is made of Ceramic shaped like a Honeycomb， coated with a thin layer of PGM (Platinum Group Metal) such as Platinum or Pt (Platinum)， Palladium or Pd (Palladium) and Rhodium or Rh (Rhodium).
One type or two types， such as Pt and Rh， when the exhaust gas has a high temperature of 300 - 400 o C.
Will be a catalyst (Catalyst) to cause the reaction of the original radicals of the exhaust As a result， there is a new combination of non-toxic gases， as shown in Fig. 2 and 3. (From the said operation， the TWC should not be called the exhaust filter.
Which is against the principle of not filtering the exhaust But is accelerating the arrangement of new molecules) In summary， CAT or TWC are 3 types of toxic gas conversion devices： HC (Hydro Carbons) or hydrocarbons， CO (Carbon Monoxide) or carbon monoxide and NOX (Oxides of Nitrogen) or nitrogen oxides.
CAT will work catalytically.
Transformed from non-toxic exhaust gases into H2O (water which is in the form of steam)， N2 (Nitrogen) or nitrogen and CO2 (Carbon Dioxide) or carbon dioxide note
1. CO2 is a greenhouse gas or a greenhouse gas (Greenhouse Gas) has a greater impact on global warming than other types of greenhouse gases.
2. CO2 is not harmful to living things directly. But if inhaled a lot Will cause lack of oxygen In addition， 3-way catalytic converters cannot work. If the exhaust gases have more pollutants than atomic exchange reactions on all 3 types of gas， which TWC will not be able to work Or work at lower efficiency because the amount of exhaust gas atoms entering CAT or TWC is not suitable.
In normal conditions， the TWC will last 100，000 kilometers (km) For a TWC gasoline engine， it will have a shorter service life due to the wrong air-to-fuel ratio.
The engine has an incomplete combustion problem， the engine is loose and there are some contaminants in the oil.
Therefore may not be used with leaded gasoline (Currently unleaded gasoline In reality， the amount of lead is still less than 13 milligrams per liter or mg ／ l).
Therefore， the TWC engine must have a Closed-Loop Control which will need to use the oxygen sensor (O2 Sensor) installed at the front of the TWC in order to know the value of the Theoretical Air-Fuel Ratio， sometimes referred to as Ideal Air-Fuel Ratio， which is 14.7： 1 (by weight) CAT， used in older diesel engines， has 2 parts.
Part 1 is an Oxidation Catalyst to reduce toxic gas， HC and CO， and exhaust will pass to the second part of CAT， DPF (Diesel Particulate). Filter) or diesel exhaust particulate filter by PM (Particulate Matter)， soot exhaust particles And black smoke in the form of carbon will attach to the DPF， which is a catalyst to act with O2 (Oxygen) or oxygen.
Part 2 the HC will continue to combustion into CO2， resulting in less pollution.

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