What is AdBlue, and why is it needed in your diesel car?

However, certain contemporary diesel engines require a mystery fluid called AdBlue®, which may be interesting to you. What is it, and why is it necessary for your car?

What is AdBlue® ?

Diesel Exhaust Fluid (DEF) is a type of fluid that is marketed under the trademark name AdBlue®. A simple mixing of 32.5% high-purity urea and 67.5% deionized water produces this white, non-toxic liquid. Even though you may not be familiar with the term, urea is a common ingredient in fertilizers and is a naturally occurring component of urine.

The Role of AdBlue®

Diesel engines are known for their efficiency, but the combustion process can also produce harmful pollutants, including nitrogen oxides (NOx). These emissions can contribute to smog, acid rain, and respiratory problems.

Here’s where AdBlue® comes in:

  • Selective Catalytic Reduction (SCR): Modern diesel vehicles with AdBlue® utilize a technology called Selective Catalytic Reduction (SCR). The SCR system has a separate tank for AdBlue®, and during operation, small amounts are injected into the exhaust stream.
  • Chemical Reaction: As the hot exhaust gases pass through the SCR catalyst, the AdBlue® breaks down, releasing ammonia. This ammonia then reacts with the harmful NOx in the exhaust, converting them into harmless nitrogen gas and water vapor. These are the same components that make up most of the air we breathe.
  • Cleaner Emissions: This clever chemical reaction significantly reduces the amount of NOx emitted by your diesel car. In fact, AdBlue® can help cut NOx emissions by over 90%!

 

The Role of AdBlue®

Why Your Diesel Needs AdBlue®

Simply put, if your diesel car has an SCR system, it needs AdBlue® to function properly and meet stringent emission regulations. These regulations are becoming increasingly important as we strive for cleaner air.

Conclusion

AdBlue® is a vital component for modern diesel vehicles with SCR systems. It’s a simple yet effective way to significantly reduce harmful emissions and keep our air cleaner. By understanding what AdBlue® is and how it works, you can ensure your diesel car runs cleanly and efficiently for years to come. So next time you fill up your diesel tank, remember to check the AdBlue® level and top it up if needed. It’s a small step that makes a big difference!

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