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  • 12

    Apr

    How SCR technology works

    AdBlue  DEF is a consumable that must be used in SCR technology. SCR technology uses a catalyst system can effectively reduced the emission of nitrogen oxides and solid particles produced by diesel engines into nitrogen and water.The main components of the SCR system include the catalyst, the AdBlue® injection unit, the urea tank and the AdBlue® dose controller. Process of SCR technol...
  • 11

    May

    Harms of using the agricultural urea instead of industrial urea

    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 ...
  • 12

    Apr

    Which vehicles use AdBlue® and SCR technology

    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...
  • 09

    Sep

    SCR System of Diesel Vehicle

    AdBlue® for vehicles is developed as the regulations for heavy-duty diesel vehicles are becoming more stringent. Particulate matter (PM) and nitrogen oxides (NOX) in diesel exhaust are the two main sources of vehicle exhaust pollution. For nitrogen oxides, the main exhaust aftertreatment technologies used in Europe and America are SCR and EGR+DPF, of which Europe and Japan is dominated by SCR,...
  • 10

    May

    The Disadvantages of Shielding the SCR System

    In general, some people will reduce the cost of purchasing AdBlue by shielding it . It is common to change the signal to deceive the driving computer by brushing the ECU or adding an emulator to the vehicle, so as to reduce the injection of AdBlue. Another cheaper way is to add a screw to the rear processor's sensor to enable the country's four vehicles to have less or no injection of AdBlue . It ...
  • 08

    Jul

    What's the difference between SCR and EGR technology

    Nowadays, heavy diesel trucks come with the most current EPA compliant equipment. This equipment comes in the form of two different methods used in the after treatment of the exhaust emissions. These methods are Selective Catalytic Reduction (SCR) and Exhaust Gas Recirculation (EGR). Either are used to reduce NOx. In the early days, most trucks had only an EGR system with a diesel particulate filt...
  • 09

    Sep

    After-treatment of SCR Technology

    The SCR exhaust after-treatment of the diesel engine is effective in controlling emissions of carbon monoxide (CO), hydrocarbons (HC) and particles (PM) in the exhaust gas to meeting the requirements of the regulations. Then the high content of nitrogen oxides (NOX) in the exhaust exhaust of the engine is treated by a special on-board aftertreatment system. At present, a variety of diesel exh...
  • 09

    Sep

    The Difference of SCR technology and EGR+DPF​

    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...
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