The evolution of catalytic converter technology has been crucial in reducing harmful emissions from vehicles. Here’s a brief overview of its development:
Early Development: Catalytic converters were first introduced in the 1970s to comply with stricter emission regulations. They primarily focused on reducing carbon monoxide (CO) and hydrocarbons (HC) emissions. For more information please visit rachat pot catalytique
Three-Way Catalytic Converters: In the 1980s, three-way catalytic converters (TWC) were developed. These converters could simultaneously reduce three major pollutants: nitrogen oxides (NOx), CO, and HC. This advancement was significant for improving air quality.
Ceramic Substrates: Early catalytic converters used metal honeycomb substrates coated with catalytic materials. Later, ceramic substrates became more common due to their better thermal efficiency and durability.
Oxygen Sensors: The integration of oxygen sensors in the late 1970s and early 1980s allowed for more precise control of the air-fuel mixture. This enabled catalytic converters to operate more efficiently and reduce emissions further.
Advanced Catalyst Materials: Research continues to improve catalyst materials, such as platinum, palladium, and rhodium, to enhance their efficiency and durability under various engine conditions.
OBD Systems: On-board diagnostics (OBD) systems, mandated in the 1990s, monitor the performance of catalytic converters and alert drivers if there are issues that could lead to increased emissions.
Future Developments: Current research focuses on improving the efficiency of catalytic converters at lower temperatures (cold starts), reducing the use of precious metals, and developing converters that can handle alternative fuels like hydrogen and natural gas.
Overall, catalytic converters have played a crucial role in reducing vehicle emissions globally, contributing significantly to air quality improvement efforts.
