Abstract
As people pay more attention to environmental problem, the issue of how to measure and reduce pollutant of the exhaust of ships were put on the agenda. To realize the detection of NOX(nitrogen oxides) content in the marine diesel exhaust emissions, the SIMULINK of MATLAB software with superior data processing capabilities was selected in this paper to enable the detection of NOX content by direct absorption measurement based on laser absorption spectroscopy (TDLAS).). The absolute error of the simulation model was less than 0.15%, and the maximum relative error didn’t exceed 1.25%. At the same time, the simulation error of the model was less than 5.0% compared with the test results of the AVL emission meter. The results had shown that the model can accurately simulate the detection process of nitrogen oxides of diesel exhaust emissions. It not only provides reference data onto people to detect harmful gases in ships but also provides valuable experience in optimizing diesel engines control strategies.
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