Where is the three-way catalytic converter located in a small car?

[StAubrey]

The three-way catalytic converter is located at the front end of the engine exhaust pipe, between the front and rear oxygen sensors. Here are the relevant details: 1. Function of the three-way catalytic converter: As a crucial component in the exhaust gas purification system of gasoline vehicles, it is responsible for the catalytic reduction of harmful gases in the exhaust, such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx). It converts these three major harmful gases into non-toxic and harmless substances like water (H₂O), carbon dioxide (CO₂), nitrogen (N₂), and oxygen (O₂) before they are expelled. 2. Lifespan of the three-way catalytic converter: The condition of the three-way catalytic converter affects the engine's power, idle stability, and fuel consumption. Its service life: domestic standards generally indicate a lifespan of 80,000 to 100,000 kilometers, while international standards typically range from 160,000 to 200,000 kilometers. It is recommended to clean the three-way catalytic converter every 30,000 kilometers. Of course, if any fault symptoms appear, cleaning can be performed earlier.