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WHAT IS ADBLUE® AND WHY DOES IT MATTER

WHAT IS ADBLUE® AND WHY DOES IT MATTER?

Diesel cars emit large amounts of nitrogen oxide (NOx) that causes air pollution and various health problems.

To reduce diesel engine emissions, vehicle manufacturers need to comply with many environmental regulations. The most significant ones are the European emission standards. They are defined in a series of EU directives, Euro 6 being the most recent one. Euro 7 is expected to come into force in 2025. Rolled out in 2015, Euro 6 is a set of regulations that aims to minimize nitrogen-oxide emissions. The regulation applies to all Euro 6-compliant diesel vehicles registered after 2015. These cars need to use a special fluid that reduces nitrogen oxide levels. Its name is AdBlue®

What is it and why is it important to diesel vehicle?

WHAT IS ADBLUE®?

Many diesel vehicle owners believe that this fluid is a diesel fuel additive. However, this is not so.

AdBlue® is a diesel exhaust fluid.It represents a blend of urea and deionized water. When the vehicle’s engine is working, small amounts of AdBlue® are injected into the exhaust gas, turning nitrogen oxides into nitrogen and water. AdBlue® isstored in a tank separate from the fuel, and it should not be mixed with it. Namely, the accidental insertion of AdBlue® into the diesel fuel tank may cause severe damage to the car’s selective catalytic reduction (SCR) system. Consequently, the engine would stop receiving the fuel.

HOW DOES ADBLUE® WORK?

Many diesel vehicles contain sensitive catalytic reduction (SCR) technology. It represents an active emissions control technology system designed to reduce nitrogen oxide emissions.In diesel engines, the reaction of oxygen and nitrogen at high temperatures causes the creation of nitrogen oxide. Its formation is the result of fuel combustion. Once AdBlue® is injected into the exhaust, it gets hotter. Its reaction with exhaust gasses leads to the degradation of harmful mono-nitrogen oxides. In the process, they are converted into nitrogen (N3) and water (H2O), both harmless to the environment and people.

Reference:
https://www.valvoline.com/en-eur/what-is-adblue/
https://www.yara.com/industrial-nitrogen/adblue/#:~:text=AdBlue%20is%20a%20diesel%20exhaust,safe%2Dto%2Duse%20fluid.