By Tim Watling, Johnson Matthey
Simulations in MATLAB and Simulink enable Johnson Matthey engineers to understand the complex interactions that take place within a catalyst, perform sensitivity analysis to see which parameters have the greatest effect on the output, and make design tradeoffs based on the results. By simulating the Simulink model for various drive cycles, the engineers can quickly and inexpensively evaluate multiple design options. Johnson Matthey engineers also use the model to systematically check configurations and parameter ranges to find the optimal design. As a result, they need far fewer aftertreatment system prototypes.