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What is inside a three-way catalytic converter?

1 Answers

DiCharles

07/30/25 5:29am

A three-way catalytic converter contains porous ceramic materials and is installed in the exhaust pipe. The three-way catalytic converter is the most important external purification device in a vehicle's exhaust system. Its working principle is: when high-temperature exhaust gases pass through the purification device, the purifying agents in the three-way catalytic converter enhance the activity of CO, HC, and NOx gases, promoting certain oxidation-reduction chemical reactions. The methods for cleaning a three-way catalytic converter are: 1. Add cleaning agent to the fuel tank; 2. Use a hanging bottle cleaning method, where the cleaning agent is drawn into the combustion chamber through the intake vacuum suction and burned, achieving the purpose of restoring the activity of the three-way catalytic converter through oxidation-reduction reactions inside it; 3. Disassemble and clean by removing the three-way catalytic converter, soaking it in oxalic acid and toilet cleaner, and then rinsing it with clean water.

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