5 Misconceptions about Truck Urea
Aug 16, 2024
Diesel exhaust fluid, also known as automotive urea, is called "AdBlue" in Europe and "DEF" in the United States. Diesel exhaust treatment fluid is mainly used to absorb the nitrogen oxides (NOx) in the exhaust gas of diesel vehicles, and it is also the most critical link in the SCR process, which is an indispensable part of the process. The main reason for removing this type of gas is the threat it poses to humans and other living things.
Therefore, the importance of diesel exhaust treatment fluids cannot be overstated.
Automotive urea ≠ Agricultural urea
There are a lot of people who think that it should be okay to mix automotive urea and agricultural urea, since they are both urea. If you think so, it is a big mistake.
Automotive urea (i.e., diesel exhaust treatment fluid) is a strict ratio requirements, generally consists of 32.5% high purity urea and 67.5% deionized water. And agricultural urea particles, metal ions, minerals and other impurities are very much. If you add agricultural urea to your vehicle, these impurities will cause fatal damage to the SCR system.
Add Water to Diesel Exhaust Treatment Fluid
Alternatives to diesel exhaust treatment fluid have always been a great concern, but adding water to it is absolutely not allowed. Because tap water contains a lot of impurities are very easy to form solids, will clog the diesel exhaust treatment fluid nozzle, the SCR system to cause irreversible damage.
Adding Diesel Exhaust Treatment Fluid Increases Fuel Consumption
Others will save money by shielding the diesel exhaust treatment fluid to reduce its consumption, thereby scaling down the cost of purchasing and using the diesel exhaust treatment fluid.
In fact, this is a big misunderstanding. SCR system is not at all involved in the truck's combustion and transmission, but it is prompted by the SCR system to increase fuel consumption is because the SCR system malfunction, which leads to the engine torque limitation, and thus increase the fuel consumption.
Poor quality diesel exhaust treatment fluid is affordable and harmless
Many truckers use cheap, low-quality diesel exhaust treatment fluid in order to save money, thinking that it doesn't matter if it's good or bad, as long as it's added.
Instead of deionized water, ordinary water is used to produce unqualified diesel exhaust treatment fluid that contains many excessive impurities. After long-term use, it is easy to clog the filter, diesel exhaust treatment fluid delivery piping and nozzles. Reduce the atomization effect of the SCR system, too many impurities will even damage the urea pump.
Therefore, the diesel exhaust treatment fluid will not increase or decrease the engine fuel consumption, but a high-quality diesel exhaust treatment fluid can ensure that the SCR system works properly, and play a role in helping to reduce fuel consumption.
Shield Diesel Exhaust Treatment Fluid Reduces Expenses
For example, by brushing the ECU to cheat the OBD monitoring, installing a simulator on top of the vehicle, or adding screws to the sensor of the SCR post-processor, to realize the diesel exhaust treatment fluid less injection or even no injection.
This may seem to reduce a lot of trouble, but in fact, the SCR system does not work for a long time will lead to the SCR system residual diesel exhaust treatment fluid crystals clogging pipes and nozzles.
Long-term lack of liquid immersion, SCR system components will reduce the service life or even damage, the catalyst will also lose catalytic effect. The cost of replacing SCR system parts is much higher than the cost of normal use of diesel exhaust treatment fluid, which in turn aggravates the cost of vehicle owners.