In today's automotive industry, ensuring that engines and aftertreatment systems operate at maximum efficiency under all working conditions is of paramount importance. This is not only essential for complying with stringent emission regulations but also crucial for addressing global warming and ensuring an adequate level of air quality. Diesel engines have substantial potential for carbon dioxide reduction due to their higher efficiency compared to spark ignition engines. However, it is crucial to suppress NOx emissions and particulate matter. Regarding NOx emissions, a dedicated after-treatment device must be employed, as the high oxidizing conditions in which diesel engines operate preclude the effective use of the three-way catalyst.