What is the Three-Way Catalytic Converter Called in Diesel Vehicles?
1 Answers
Diesel vehicles do not have a three-way catalytic converter. The three-way catalytic converter is exclusively used in gasoline engines and primarily oxidizes carbon monoxide, hydrocarbons, and nitrogen oxides. Below is an introduction to the composition of diesel engine exhaust and the function of the three-way catalytic converter: 1. Composition of diesel engine exhaust: The exhaust from diesel engines mainly consists of NOX, SO2, and PM (soot particles), with NOX and PM accounting for a very high proportion. 2. Function of the three-way catalytic converter: The three-way catalytic converter is the most important external purification device installed in a vehicle's exhaust system. It converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. However, there is now four-way catalytic technology for diesel engines abroad, integrating a soot particle filter, lean NOx urea system, and diesel oxidation catalytic converter.