Vehicle urea has no distinction between high quality and ordinary, only qualified and unqualified!
Vehicle urea, also known as automobile urea, is a liquid used in SCR technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition is 32.5% high purity urea and 67.5% deionized water.
Unqualified vehicle urea will cause SCR blockage in the cart and cause engine damage!
Origin and present situation of urea solution for automobiles:
As environmental protection departments in various countries have proposed to further reduce the emission of nitrogen oxides from diesel engines. It is commonly known as Euro IV standard in China.
Engine manufacturers began to use SCR (Selective Catalytic Reduction Technology) to meet environmental requirements.
Diesel engine exhaust treatment fluid (commonly known as automotive urea, automotive urea, automotive environmental protection urea) is a consumable that must be used in SCR technology.
SCR system includes urea tank (loading diesel exhaust treatment liquid) and SCR catalytic reaction tank. The operation process of SCR system is that when nitrogen oxides are found in the exhaust pipe, the urea tank automatically ejects the diesel engine exhaust treatment liquid, and the diesel engine exhaust treatment liquid and nitrogen oxides undergo redox reaction in the SCR catalytic reaction tank, generating pollution-free nitrogen and water vapor emissions.
If the diesel engine exhaust treatment fluid is not loaded, or the purity is not enough, or the quality is not good, the auto-deceleration of the vehicle engine will occur. At the same time, the diesel engine exhaust treatment liquid of inferior quality will pollute the catalyst in SCR catalytic reaction tank, resulting in serious consequences.
In fact, in Europe, this policy has been implemented since 2006. The European diesel engine exhaust treatment fluid is called Adblue. The main representatives are BP and so on.
In the United States, since 2010, with the implementation of EPA2010 standard, the application of this product has been strengthened. In the United States, diesel engine exhaust treatment fluid is called DEF (Diesel Exhaust Fluid). The main representatives are BlueDEF and so on.
At present, this product has two major international certifications, one is the ADBlue certification of the German Automobile Industry Association (VDA) and the other is the DEF certification of the American Petroleum Institute (API).
At home, the production of diesel engine exhaust treatment fluid is still a new industry. It is expected that in the second half of 2011 or the first half of 2012, China will formulate its own national standards for diesel engine exhaust treatment fluid products.