What Happens If a Car Doesn't Have a Catalytic Converter?

[VonElias]

In the absence of a catalytic converter, the chemical reaction rates between the three harmful gases in automobile exhaust are extremely slow, and some reactions may not even occur. As a result, almost all of these harmful gases are emitted into the atmosphere, significantly increasing air pollution. Before the 1990s, cars were not equipped with catalytic converters, leading to severe air pollution in certain cities, which worsened as the number of vehicles increased. Additional information: 1. The catalytic converter has no moving parts inside; all cleaning operations are accomplished through clever chemical reactions. The interior consists of a thick substrate with a fine honeycomb cross-section, coated with precious metals such as platinum, palladium, and rhodium. 2. These precious metals act as catalysts in the actual reactions. Whether it's emissions, gasoline, diesel, or engine oil, they can react with these metals and quickly transform into less harmful substances, primarily nitrogen, carbon dioxide, and water.