Short description about my topic. We have created the model of the three-way catalyst in the SI (spark ignition) petrol engine, and calculated this model to evaluate the exhaust aftertreatment system and calibrate it with measurement data from the engine test bench. As the next step, we will work with the measurement data from SI (spark ignition) methanol engine and will calibrate the system. Then we will design a new aftertreatment system for low time of light-off, more efficiency, and to reduce exhaust gases.

As a working method, we use the simulation software GT-Power from Gamma Technologies, for one dimension engine simulation. Moreover, as a working technique, we use the Design of Experiments to evaluate different designs, and heating methods.

Speaking about results, to decrease exhaust gases at the model of the three-way catalyst in the SI (spark ignition) petrol engine, we offer to increase cell density from 200/400 to 400/800, as well as to decrease a size of catalysts within the framework of the minimum emissions. We have noticed during the research that in case with THC exhaust gas, the old catalyst produces in 10 times more exhaust gases. In turn, CO exhaust gas in the old catalyst produces in 6 times more exhaust gases than with the new catalyst. Appropriately, we highly recommend protecting environment not to use old catalysts and to replace them to new one because they produce exhaust gases in large quantities.