AdBlue is a urea-based fluid that is used in diesel engines to reduce emissions of nitrogen oxides (NOx) in the exhaust gas. It is injected into the exhaust stream and works by converting the harmful nitrogen oxides (NOx) into nitrogen and water vapor through a process called selective catalytic reduction (SCR).
The AdBlue is injected into the exhaust stream by an injector, and then it’s carried to the SCR catalytic converter. The AdBlue is heated and vaporized by the exhaust gases and then it’s injected into the catalytic converter where it reacts with the exhaust gases to convert the nitrogen oxides into nitrogen and water vapor.
The AdBlue is stored in a separate tank, and the level of the tank should be regularly checked and refilled as necessary. AdBlue usage is mandated by emissions standards and its use helps to reduce emissions of nitrogen oxides (NOx), which is a benefit for the environment and the air quality in the long term.