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Precautions for using AdBlue in winter

2020-02-16 16:13:10

adblue def

AdBlue will freeze at - 11 ℃ ,so AdBlue hose and pump are likely to freeze in cold areas . We have mentioned that the AdBlue with 32.5% concentration is the most ideal cause AdBlue working at this concentration can reduce the NOx to the greatest extent. Too high or too low concentration will reduce the reduction of NOx. However, it should be noted that the concentration of AdBlue is greatly affected by temperature. AdBlue will crystallize(low concentration) at low temperature and high temperature will make water in AdBlue evaporate (high ncocentration).

At 32.5% concentration, the freezing point of AdBlue reaches the lowest - 11 . The AdBlue in the tank will freeze in the cold winter. At present, many trucks have heating function for post-treatment. When the truck passes through the cold winter of one night, it will preheat the AdBlue when it is started again. After several minutes of preheating, the crystallized AdBlue will melt slowly. At this time, some systems may report system blocking plug fault.  It's normal to shut down the engine and start it again after warming up for a period of time . The AdBlue level and temperature sensors are also installed in the AdBlue tank to ensure that AdBlue operates at a suitable temperature at any time, so it can be safely used. Or you can buy low temperature AdBlue for cold areas.

Matters needing attention

AdBlue has certain expansion when it freezes. Generally, there is a liquid level observation window for AdBlue on the tank. The position of the window is a certain distance from the filling port. The upper limit mark of "Max" is marked on the window and we should not exceed this scale. The last working step of the after treatment system will automatically remove the residual AdBlue in the system and pipeline to prevent icing. After the engine is shut down, wait for more than 1 minute before turning off the main power switch. During this time, the system will automatically conduct the evacuation process.


EverBlue provide the AdBlue with high quality standard such as VDA certification ,ISO22241 as well as the special low temperature for the cold areas which never crystallization.


For more information ,please feel free to contact us!


 
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