The qualified AdBlue® is a high-purity transparent liquid composed of 32.5% high-purity urea and 67.5% deionized water. It has a light ammonia smell and is suitable for all Euro IV and Euro V emission diesel engine with SCR system. The fertilizer urea prilled will cause the catalyst poisoning and damage parts of SCR tail gas processors by its excessive biurea , mechanical impurities ...
AdBlue Aqueous urea solution is alkaline with feature of non-toxic , non-pollutiing and non-flammable. AdBlue® Aqueous urea solution has special requirements for storage materials and storage conditions ,because of its alkaline characteristics. (1) The effect of storage temperature on AdBlue DEF: AdBlue® requires a storage temperature of about -5 to 25 ℃, it should be avoid sunlight and hi...
Heavy goods vehicles – trucks, coaches and buses have been using SCR technology and AdBlue since 2004. For example, Mercedes and Volkswagen. The latest Euro VI emissions regulations from the European Commission has really driven an explosion in SCR technology from the passenger car perspective in Europe. The Euro VI regs introduced in 2014/15 demanded nitrogen oxides emissions should be reduced by...
Misunderstanding 1 ：Using agricultural urea instead of industrial urea for AdBlue® AdBlue® has strict ratio requirements which are basically composed of high-purity urea and deionized water and the ratio is strictly controlled. One of the criteria for quality is the control of impurities. There are many impurities such as particulate matter, metal ions and minerals in agricultural urea and...
1. The urea content directly effect the catalytic efficiency and freezing point of AdBlue®. In SCR system, the urea content in AdBlue® is one of the key factors. Too high or too low urea content can't improve the conversion efficiency of NOx, and it will cause ammonia to escape. At the same time, the urea content directly affects the catalytic efficiency of NOx and the freezing point of Ad...
Refilling the AdBlue tank is not a do-it-yourself task. Although it is possible to purchase the urea solution at the retailer, it is generally available only through a dealership or service shop. The systems are designed with a capacity of several gallons which transforms into several thousands of miles. Under normal vehicle operating conditions, the AdBlue® tank needs to be refilled only duri...
At present, two technical solutions are adopted to solve the problem of diesel exhaust emissions. One is SCR technology , another is EGR+DPF. Principle of EGR (Exhaust Gas Recirculation): The technology introduces engine exhaust gas into the intake pipe to reduces the oxygen concentration entering the cylinder and controls the combustion speed as well as lowers the combustion t...
With the increase of air pollution, especially haze weather, the tolerance of society to air pollution has reached its limit. Through long-term scientific investigation of the sources of air pollutants, it is found that the contribution rate of automobile exhaust to air pollution is more than 50%. Our diesel vehicles are still growing year by year, so the emission reduction of diesel vehicles is t...
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Sammi Sun
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