Nitrogen Oxide Traps For Exhaust Systems Being Parts Of Internal Combustion Engines

Nitrogen Oxide Traps For Exhaust Systems Being Parts Of Internal Combustion Engines

Nitrogen oxide (NOx) traps are components of exhaust systems in internal combustion engines that are designed to reduce the amount of NOx emissions that are released into the atmosphere. NOx is a harmful pollutant that is produced when nitrogen and oxygen react at high temperatures, such as those found in the combustion chamber of an engine. These emissions can contribute to smog, acid rain, and other environmental problems. NOx traps work by capturing the NOx emissions in a catalytic converter, where they are then converted into less harmful gases such as nitrogen and water vapor. The traps contain a catalyst that promotes this reaction, and they are typically located downstream of the engine and upstream of the muffler. There are two main types of NOx traps: lean NOx traps and rich NOx traps. Lean NOx traps are used in engines that operate with a lean air-fuel ratio (more air than fuel), such as diesel engines. Rich NOx traps are used in engines that operate with a rich air-fuel ratio (more fuel than air), such as gasoline engines. Both types of traps work by storing the NOx emissions during normal engine operation, and then periodically releasing them into the catalytic converter where they are converted into harmless gases. NOx traps are an important technology for reducing emissions from internal combustion engines, and they are widely used in both light-duty and heavy-duty vehicles. However, they do have some limitations, such as reduced effectiveness at low temperatures and the potential for catalyst poisoning from sulfur in the fuel. As a result, there is ongoing research into alternative technologies such as selective catalytic reduction (SCR) and lean-burn engines.

NOx, exhaust systems, internal combustion engines, catalytic converter, lean NOx traps, rich NOx traps

— Andrew Moore

CITATION : "Andrew Moore. 'Nitrogen Oxide Traps For Exhaust Systems Being Parts Of Internal Combustion Engines.' Design+Encyclopedia. https://design-encyclopedia.com/define/nitrogen-oxide-traps-for-exhaust-systems-being-parts-of-internal-combustion-engines?E=413302 (Accessed on October 14, 2026)"