What role does truck urea play?

Urea for vehicles plays a key role in the power and fuel consumption of vehicles. If diesel exhaust treatment solution is not loaded, or urea solution with poor purity and poor quality is used, the vehicle starter will slow down actively. At the same time, the inferior diesel exhaust treatment liquid will pollute the catalyst in the SCR catalytic reaction tank, resulting in the damage of the components of the aftertreatment system.

the qualified urea solution is NOX, which consists of 32.5% ultra-pure urea and pure water. The urea solution for vehicles is converted into nitrogen, oxygen and water by selective catalytic recovery reaction with NOX products, and then the emission of nitrogen oxides is reduced. It is suitable for all diesel engine SCR systems with Euro IV and Euro V emissions.

Extended information:

Principle

The first vehicle to be added with urea is the vehicle with diesel engine. Because the diesel engine emits harmful gas nitrogen oxides, it will cause environmental pollution, and human beings will do great harm to the human body by inhaling this waste gas for a long time. In order to reduce this damage, it is necessary to add urea to the vehicle with diesel engine. Adding urea has a catalytic function and will have a chemical reaction when encountering nitrogen oxides.

However, some cars use gasoline engines, and the gasoline engine uses a three-way catalyst to treat the exhaust gas. The three-way catalyst has a precious metal, which can catalyze the exhaust gas into nitrogen, so cars do not need to use urea to filter harmful gases.

However, this three-way catalyst is not suitable for diesel engines, so no matter what kind of engines are used, cars with diesel engines are equipped with a box specially filled with urea or three-way catalyst, especially cars with diesel engines will consume urea as long as they start, so it is necessary to replenish urea on time. With the strict emission standards for cars, urea for cars has become the fourth largest car consumable after fuel, lubricating oil and tires.

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