The new anti-pollution standards are more and more demanding. They have pushed car manufacturers to look at the problem of reducing pollution and the need to take action to preserve our environment. It is from this ecological emergency that AdBlue was born. But what is it really about? Is this a really spectacular product? And are there disadvantages to its use? We guide you to a better understanding of this product.
What is AdBlue?
TheAdBlue is an additive developed for meet the specific needs of the diesel engine, while limiting the pollutant impact of this fuel. A tank for receiving this liquid is installed on the new vehicles put on the market and which are subject to the Euro 6 standard in application since 1er September 2014.
These vehicles are specially equipped with a selective catalytic reduction system (CBC). This device is indicated to reduce emissions of carbon monoxide (CO), unburned hydrocarbons (HC), fine particles (PM) but also nitrogen oxides (NOx). The SRC has already been present since 2005 on trucks and tends to prevail on new vehicles coming out of the factory. It is developed to reduce our impact on the environment and to cope with the inconvenience produced by the diesel engine.
How does AdBlue work?
This additive solution is used in the SCR to transform nitrogen oxides into nitrogen and water vapor that are naturally present in the air that we breathe. The action of AdBlue converts a harmful polluting gas into two elements that are not dangerous for nature and our health.
This solution, composed of demineralised water (67,5%) and urea (32,5%), does not present any risk of explosion or risk of igniting. It is not aggressive to the environment, but can become corrosive when it comes into contact with certain metals. AdBlue guarantees the standards in accordance with ISO 22241 and DIN 70070 quality. Using other additives would be risky for the durability and operation of your vehicle.
When AdBlue is injected into the catalyst, it enters into a chemical reaction with the exhaust gas and attenuates the presence of the polluting components. Ammonia molecules that are present in urea are released to oxidize Nox produced by a diesel engine. The transformation is evolving towards the production of dyazote and water vapor, which are then released into the ambient air. The action occurs as soon as the temperature of 190 ° C is reached.
Which vehicles use AdBlue?
Only vehicles with an SCR system can use the AdBlue additive. The latter is already present on part of the truck fleet. It is installed on many other vehicles such as utility trucks, motorhomes or minivans and 4 × 4 vehicles. For some time, many vehicles have been originally equipped with an SCR which is composed of a catalyst, a specific reservoir for AdBlue, an additive injection unit and a control to properly dose AdBlue. The product is also reserved exclusively for engines powered by diesel.
How should you use the Adblue additive?
This additive product should not be mixed with fuel as many other additives. Vehicles with an SCR must have a tank adapted to accommodate the AdBlue. So add the additive in this tank, which is closed by a blue cap easily recognizable. When the tank is empty, a warning light will come on your dashboard to warn you that AdBlue must be delivered. The tank is located at different locations depending on the model of the vehicle. Thus, it can be located in the same place as the hatch of the fuel tank, but also under the hood of the car or in the trunk. You should know that a vehicle with SCR will not work if you do not add AdBlue.
What precautions should be taken ?
The product is not harmful to the environment, but it can be corrosive when it comes into contact with certain materials such as metal. Avoid spilling when refueling your tank. Clean your hands after use.
Regarding the conservation of cans, you have to be very careful. AdBlue does not support UV rays and risk losing quality if it undergoes type of contact. It must therefore be stored in a place protected from light. It also does not like extreme temperatures (frost and heat), the ideal temperature for storing it is between 0 and 30 ° C.
In addition, it does not withstand storage that exceeds 18 months. So quickly use the doses you have and buy the containers according to your needs. You will find ibc 1000 liters in bulk, cans of 210 liters or 10 liters. Choose the solution that best suits your AdBlue consumption.
Advantages and disadvantages of AdBlue
This product has many advantages, but also some disadvantages that must be taken into consideration.
- AdBlue is engineered to make diesel engines cleaner and reduce our impact on the environment.
- SCR technology is known to be very effective at acting on nitrogen oxides and NOx that have been scandalous lately in some automakers.
- Most future cars will be equipped with this system to ensure compliance with European standards.
- Even if the product is not so expensive, it still represents an additional cost in the long run. It is therefore advisable to buy containers in large quantities to reduce costs. The purchase of small containers at a service station or at the builder's premises can quickly become a financial pitfall.
- The SCR tanks of equipped vehicles are still too small to completely eliminate the pollution related to the exhaust gas.
- When the AdBlue tank is empty, your vehicle loses power and may also refuse to start.
- The consumption of AdBlue also depends on your driving style and the type of vehicle used.
- If the warning light comes on, there is a small reserve of AdBlue but it should not be delayed to refuel, so as not to alter the operation of the vehicle.