Why Are Three-Way Catalytic Converters So Expensive?

[OEloise]

Three-way catalytic converters are expensive because they contain precious metals, resulting in high manufacturing costs. Additional Information: 1. Three-Way Catalytic Converter: It is the most important external purification device installed in a vehicle's exhaust system. It converts harmful gases such as carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides (NOx) emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. Since this converter can simultaneously transform the three major harmful substances in exhaust gases into harmless substances, it is called a three-way converter. 2. Precautions for Using a Three-Way Catalytic Converter: 1. Do not use leaded gasoline. 2. Avoid prolonged idling (open-loop control state). 3. Avoid sudden changes in engine speed.