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.

2024年5月30日 · Diesel Exhaust Fluid (DEF) is a non-hazardous, highly purified solution made of 32.5% urea and 67.5% deionized water. It is used in selective catalytic reduction (SCR) systems to reduce harmful nitrogen oxide (NOx) emissions from diesel engines.

2024年8月21日 · Read a quick summary of how diesel exhaust fluid works and the chemistry behind it. What Is the Purpose of Diesel Exhaust Fluid? The U.S. Environmental Protection Agency (EPA) sets standards for the emissions of nitrogen oxides …

2023年9月15日 · Yes, you can make your own Diesel Exhaust Fluid (DEF). DEF is a crucial component for reducing harmful emissions from diesel engines, and understanding how to produce it at home or on-site can offer both cost savings and environmental benefits.

2024年7月29日 · 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 nitrogen,...

2024年1月5日 · What is Diesel Exhaust Fluid (DEF)? Diesel Exhaust Fluid is a solution made from urea and purified water. It’s used in modern diesel engines to reduce harmful emissions by converting NOx into nitrogen and water vapor. How to make DEF fluid? Producing DEF fluid involves carefully mixing urea with deionized water.

2023年3月20日 · We’ll cover exactly how it works in a minute, but if you are wondering what diesel exhaust fluid is made from, once again the answer is simple: it’s mostly water. In fact, 67% of diesel exhaust fluid is deionized water, and the rest is made up from something called urea.

2024年4月2日 · Diesel Exhaust Fluid primarily reduces nitrogen oxides emissions in diesel engines through a process called Selective Catalytic Reduction. In the presence of the catalyst, ammonia reacts with nitrogen oxides (NOx) in the exhaust gas. The reaction converts NOx into nitrogen (N₂) and water vapor (H₂O).

How does diesel exhaust fluid work? It is injected into the exhaust stream, where it’s water evaporates. The separation of Urea and Water due to heat, is called thermolysis.

2018年2月2日 · DEF, or diesel exhaust fluid, is a non-toxic solution made up of urea and de-ionized water. When combined with the exhaust stream from a diesel vehicle, it breaks down emissions, transforming them into nitrogen and water.