Which Cars Have Three-Way Catalytic Converters?

[VonJaxon]

All cars are equipped with three-way catalytic converters. Here are the relevant details: 1. Three-Way Catalytic Converter: It is the most crucial 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 reactions. This converter is called 'three-way' because it simultaneously transforms the three primary harmful substances in exhaust gases into harmless compounds. 2. Working Principle: 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, promoting specific oxidation-reduction chemical reactions. CO oxidizes at high temperatures to form colorless, non-toxic carbon dioxide gas; HC compounds oxidize into water (H2O) and carbon dioxide; and NOx is reduced to nitrogen and oxygen.