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,...
There are three reasons for the blockage of urea crystallization in AdBlue® production machine. Here are three main reasons for the blockage ; I. Atomization effect or failure of the nozzle SCR system can be divided into two types: air-free type and air-assisted type. Generally, the working pressure of air-assisted urea injection is relatively high, so it may occur that the nozzle valve needle...
China is one of the world's largest automobile production countries. In 2018, China's auto production and sales of 27.809 million and 28.881 million cars, of which heavy diesel vehicles accounted for about 18% of the production and sales. Heavy-duty diesel vehicles are the main source of pollutants emitted by motor vehicles. Therefore, the existence of a large number of heavy-duty diesel vehicles ...
It depends on many factors, includes the diesel engine size, driver, DEF system condition, presence of NOx in the exhaust stream. Typically, manufacturers refer to DEF consumption as a percentage or fuel consumption. This can vary from as low as 2% to as high as 10%. So if your engine consumes 100 gallons of fuel, for a 10% DEF consumption, it would have used 10 gallons of diesel exhaust fluid def...
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...
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...
The SCR/Urea Solution is aimed to apply the stricter emission regulations for Vehicles or heavy machineries with diesel engines. The particulate matter and nitric oxide are the main sources of pollution coming out from the exhaust system, and there are two main after treatment technics worldwide, the SCR and the EGR+DEF. The SCR is mainly used in Euro and Asia, but also the US since 2010. As...
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