Chang Huang, Shuzhan Bai, Guoxiang Li*, Ke Sun*
FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.1, pp. 83-93, 2023, DOI:10.32604/fdmp.2022.021662
Abstract The influence of heterogeneous flow injection of urea at different velocities and temperatures on NOx conversion
efficiency, ammonia storage and ammonia leakage is investigated experimentally. A diesel engine employing a
selective catalytic reduction (SCR) technology is considered. It is found that for a fixed injection velocity, the
degree of ammonia leakage changes depending on the temperature. The higher the temperature, the faster the
catalytic reduction reaction and the smaller the degree of ammonia leakage. The temperature has a great influence
on the catalytic reduction reaction rate. At an injection velocity of 10000/h, the average reaction rate at 420 C is… More >
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