What are the different types of catalytic converters? A large amount of smog and gas will be generated during the driving of automobiles, causing environmental pollution. On the other hand, catalytic converters help cars meet federal vehicle emission standards by converting harmful compounds in emissions into safe gases. Therefore, the catalytic converter is a crucial automobile part. Usually, suppose the catalytic converter is damaged and needs to be replaced. In that case, it is also very troublesome, so it is necessary to understand the different types of catalytic converters.
Types of catalytic converters in cars
There are three types of "Direct-fit" catalytic converters: binary, ternary, and ternary plus oxidation converters.
1. Bidirectional catalytic converter:
It wasn't until 1981 that bidirectional catalytic converters appeared on vehicles in the United States. They use oxidation catalysts to convert carbon monoxide into carbon dioxide and hydrocarbons into carbon dioxide and water.
2. Three-way catalytic converter:
The three-way catalytic converter has been put into use in large quantities since 1981. The principle is the same as the binary converter. The reduction catalyst converts nitrogen oxides into nitrogen and oxygen. In general, most diesel engines require the use of bidirectional catalysts. So initially, the converter was specially designed to deal with the waste gas from diesel. The converter of the engine primarily deals with particulates of the soluble organic fraction produced by the hydrocarbons combined with the soot.
3. Ternary plus catalytic converter
In summary, bidirectional "oxidative" converters have been invented since 1981 to eliminate hydrocarbons (HC) and carbon monoxide (CO). The ternary converter is primarily designed to eliminate nitrogen oxides (NOX). The ternary plus, also known as the "twin bed" converter, cleans the engine exhaust by injecting atmospheric air between the three-way catalyst and the additional oxidation bed.
A large number of precious metals in the molecular form are distributed on the rough surface ceramic coating on the honeycomb substrate of the catalyst. The functional performance of the converter depends on the content of precious metals on the honeycomb substrate. Therefore, we must choose suitable types of catalytic converters from reliable suppliers and distributors.