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Passenger car using an AdBlue pump. 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 · Upon engine start-up, the SCR system provides heat to the DEF tank and lines which allows the DEF to thaw rapidly and keeps it flowing to the aftertreatment system regardless of the outside temperature. Diesel Exhaust Fluid is formulated with 32.5 percent urea and 67.5 percent deionized water.
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.
3 Οκτ 2024 · Diesel exhaust fluid, or DEF, is a key component in lowering pollutants emitted from diesel engines, helping to improve efficiency and reduce emissions.
6 ημέρες πριν · Diesel Exhaust Fluid (DEF) might sound complicated, but it’s really just a mix of water and urea, which is a common compound found in fertilizers. When your diesel engine is running, DEF gets sprayed into the exhaust system and heats up. This heat causes the urea in DEF to turn into a gas called ammonia. The ammonia reacts with the harmful ...
