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

[MacClayton]

The function of a car's three-way catalytic converter is to enhance the activity of three gases—CO, HC, and NOx—when high-temperature exhaust gases pass through the purification device, while converting the three main harmful substances in the exhaust into harmless substances. The following conditions may occur if the three-way catalytic converter is damaged: Decreased engine power performance: Decreased engine power performance, increased fuel consumption. During driving, the three-way catalytic converter is prone to damage from road impacts, such as scraping or strong vibrations, leading to collisions that may fracture the converter's substrate. This can easily block the exhaust passage, resulting in reduced power performance, increased fuel consumption, and worsened emissions. Increased exhaust passage resistance: Due to faults in the fuel supply system, ignition system, etc., engine overheating or backfiring can cause the catalytic converter substrate to sinter or peel off, increasing exhaust resistance. This also leads to greater exhaust passage resistance and worsened emissions.