Is the Three-Way Catalyst Useful?
1 Answers
The three-way catalyst is useful. The main function of the three-way catalyst is to heat the catalytic converter using the exhaust gases emitted by the engine, then undergo a chemical reaction with the exhaust gases to convert toxic and harmful gases into harmless emissions such as water or carbon dioxide. How to determine the condition of the three-way catalytic converter: Visual inspection. Check the exterior of the three-way catalytic converter for any damage or discoloration. If there are scratches, cracks, etc., it is likely that the catalytic converter has been damaged. If there are noticeable gray spots in the center of the protective cover, severe discoloration, or purple marks on the shell, the catalytic converter may have suffered from overheating issues. Observe the engine's exhaust condition. Place your hand near the tailpipe outlet to feel the exhaust flow and check if the catalytic converter is clogged or if there are issues with poor exhaust flow. Another method is to open the air filter, remove the filter element, and observe if there is exhaust backflow during rapid acceleration, indicating poor exhaust flow. To test the condition of the TWC (Three-Way Catalyst), check if the secondary air injection pump is functioning properly. Use an infrared thermometer to assess. Compare the temperature difference before and after the TWC using an infrared thermometer. If the temperature difference between the inlet and outlet of the catalytic converter is less than 10°C, the TWC is likely damaged.
