What is the material of the three-way catalytic converter?
1 Answers
The material of the three-way catalytic converter is aluminum oxide (Al₂O₃), and the outer shell is made of stainless steel. The following are the reasons that cause the failure of the three-way catalytic converter: 1. Prolonged idling; 2. Delayed ignition timing; 3. Overly rich air-fuel mixture; 4. Engine oil burning; 5. Oxygen sensor failure; 6. Overheating due to incomplete cooling; 7. Switching off the vehicle while driving. Additional information: The working principle is that 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, facilitating certain oxidation-reduction chemical reactions to convert them into harmless gases.