The performance of TWCs is evaluated based on their ability to convert harmful gases into less harmful ones, known as conversion efficiency. This is often tested under various conditions that mimic real-world driving scenarios. The key parameters include:
Light-off temperature: The temperature at which the catalyst begins to convert pollutants efficiently. Durability: The ability to maintain performance over time. Resistance to poisoning: The ability to withstand contaminants like sulfur and lead that can deactivate the catalyst.
