What are the Types of Catalysts Used in Catalytic Converters?
The primary types of catalysts used in catalytic converters are: - Three-way catalysts (TWCs): These are used in gasoline engines and can simultaneously reduce NOx, CO, and HC. - Diesel oxidation catalysts (DOCs): These are used in diesel engines to oxidize CO and HC. - Selective catalytic reduction (SCR) systems: These are employed to reduce NOx emissions from diesel engines by using a reductant like urea.
