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Diesel exhaust fluid (DEF; also known as AUS 32 and sometimes marketed as AdBlue [3]) is a liquid used to reduce the amount of air pollution created by a diesel engine. Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water .
What is DEF Made of? DEF is a chemical solution containing exactly 67.5% deionized water and 32.5% automotive-grade, aqueous urea. The urea component is an organic compound made of nitrogen, hydrogen, carbon, and oxygen.
Since around 2002, SCR (Selective Catalytic Reduction) systems that use Diesel Exhaust Fluid (DEF) made their appearance in the automotive market. So what’s in DEF? DEF is a solution (or mixture) of 32.5% Urea and 67.5% de-ionised water.
4 Ιαν 2016 · A: Because almost all diesel-powered passenger cars and trucks built since 2010 are equipped with Selective Catalytic Reduction (SCR) and require Diesel Exhaust Fluid (DEF), it is readily available at most fueling stations and automotive parts retail stores. Truck stops often have a DEF pump right on the fuel island.
17 Απρ 2023 · DEF is made up of 67.5 percent deionized water and 32.5 percent high-purity urea. A quick internet search tells us there are roughly 100 American Petroleum Institute (API) certified brands of DEF that can be found in North America.
3 Οκτ 2024 · What Is DEF? Diesel exhaust fluid is an automotive-grade combination of urea and deionized water, which you inject into the exhaust stream of a diesel engine to help turn NOx, or oxides of...
What is Diesel Exhaust Fluid (DEF) Made of? Diesel Exhaust Fluid is created from about two parts deionized water–highly purified H2O– and one part urea–often used in fertilizers. Urea is also a compound found in urine, although it is not urine in the DEF form.
