What is the purpose of cleaning a car's three-way catalytic converter?

[McAaliyah]

Cleaning a car's three-way catalytic converter serves the following purposes: it helps improve the performance of the vehicle's engine and reduces frequent alarms from the exhaust system's oxygen sensor. It is particularly suitable for closed-loop fuel-injected vehicles, and for vehicles with good driving habits, cleaning can be performed every 10,000 to 20,000 kilometers. The three-way catalytic converter is an important external purification device installed in the car's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from the vehicle's exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. When high-temperature exhaust gases pass through the purification device, the catalyst in the three-way catalytic converter enhances the activity of CO, HC, and NOx gases, promoting specific oxidation-reduction chemical reactions.