Most cars built because the mid 70s compass a catalytic converter.
The three-way reduction converter has become the standard for most cars in the United States because it converts not only hydrocarbons and carbon dioxide, but also harmful nitrous oxides. It is identified by the large amount of small holes in the honeycomb as opposed to large holes in the two-way converter.
It simply oxidizes hydrocarbons and harmful carbon monoxide into harmless carbon dioxide and water. This is easily identified because it has a honeycomb pattern that is wider than other types and fewer holes in the honeycomb.
Catalytic converters make cars more environmentally friendly by eliminating many of the contaminants created during the fuel combustion process. There are three types of converters and each has a way to identify which type it is.
Two-Way ConverterOne of the first converters in production was the two-way oxidation converter, which was used in the 1970s before it was replaced by the three-way converter.
The most efficient catalytic converter on the market is the dual converter that uses both a two-way and a three-way converter together. This is identified by the two different types of converters connected together into a single unit.