The Role of Diesel Exhaust Fluid in Reducing Emissions
What You Should Know As environmental regulations continue to tighten, the role of Diesel Exhaust Fluid (DEF) in reducing emissions from diesel engines has become increasingly significant. DEF is a crucial component in modern diesel engine technology, helping vehicles meet stringent emission standards and contribute to cleaner air. This article will explore the role of Diesel Exhaust Fluid in reducing emissions, how it works, its benefits, and why it is essential for both vehicle performance and environmental protection. Understanding Diesel Exhaust Fluid (DEF) Diesel Exhaust Fluid (DEF) is a clear, non-harmful liquid made up of 32.5% urea and 67.5% deionized water. It is used in selective catalytic reduction (SCR) systems, a technology designed to reduce nitrogen oxide (NOx) emissions from diesel engines. DEF is injected into the exhaust stream where it reacts with the hot exhaust gases in the SCR catalyst. This chemical reaction converts NOx into harmless nitrogen and water vapor, w...