The subject of the research project is the light-off behaviour of the three-way catalyst in the SI (spark ignition) motorcycle petrol engine.
The main research question is to reduce the emission by decrease time for exceeding the light-off temperature.
The tasks of the research:
– Optimizing the light-off behaviour of the three-way catalyst in the motorcycle petrol engine
– Regulating emissions by designing and evaluating different parameters of the 3-way catalyst using created 1D simulation in GT-Power from Gamma Technologies
As a result of designing and evaluating different parameters of the 3-way catalyst using created 1D simulation in GT-Power from Gamma Technologies, we have created the improved model for efficient aftertreatment for the future hybrid engine. We have made significant progress in creating an effective model with reduced exhaust gases and improved light-off behaviour.
During the research, we have found that the car catalyst works best in the temperature range of 473,15-773,15 Kelvin. The three-way catalytic converter only functions when the so-called light-off temperature is exceeded. This point describes the temperature range above which at least 50% of the emissions can be converted. We should warm up the three-way catalyst for the shortest time to regulate exhausted gases. We successfully decided this scientific issue and made the time of warming up the catalyst shorter from the baseline, and in a result reduced exhausted gases.
Likewise, we reached reduced CO emissions by -4.29% for the new catalyst, and by -10.4% for the old catalyst. For NOx we reduced emissions by -0.11% for the new catalyst, and by -0.05% for the old catalyst. And for THC emissions, we reduced by -1.3% for the new catalyst, and by – 3.77% for the old catalyst.