Study on Atomization Characteristics and Crystallization Risk of Urea Nozzle in SCR System
For the study of engine SCR system urea nozzle atomization characteristics and the risk of crystalli-zation,explore the influence of different nozzle atomization performance and the effect of urea crystallization,im-prove spray atomization effect,it is by reducing the average diameter of soter(SMD)to reduce the spray drop-lets,to achieve the purpose of reducing urea crystallization.Under the same injection pressure,the SMD of the spray produced by the gas-assisted urea nozzle is smaller than the SMD of the non-gas-assisted nozzle,and the at-omization effect of the same nozzle decreases with the spray pressure,the smaller the spray SMD,the better the atomization effect,and the less the crystallization amount under the same working condition.
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