The purpose of this work is to evaluate and compare the emissions of two vehicles, to determine the differences in environmental performance and identify the possible causes of the variations. The current state of the art in the field of reducing vehicle emissions is marked by rapid evolution, mainly imposed by increasingly strict regulations, such as the Euro 6 and the upcoming Euro 7 standards. These regulations specifically aim to reduce emissions of carbon monoxide (CO), nitrogen oxides (NOx), unburned hydrocarbons (HC) and fine particles (PM). The materials used in the comparative study on the emissions of two vehicles are: the vehicles studied, the emission measurement equipment. The methods used are: vehicle preparation, test procedure, data collection and analysis. The Volkswagen Passat E6 is superior in terms of emissions compared to the Volkswagen Golf E4. The Golf E4, on the other hand, could be a more economical option, but with a greater impact on the environment. Automakers use a range of advanced technologies to meet pollution standards: -Exhaust gas after-treatment systems; -Exhaust gas recirculation (EGR): a system that recirculates part of the exhaust gases to reduce the combustion temperature in the engine, which reduces the formation of NOx; -Electronic control systems (ECU): these are the "brains" of the engine. The ECU constantly monitors and optimizes operating parameters, such as fuel injection and ignition timing, to ensure the most efficient combustion and minimize emissions.; -Hybridization and electrification: The shift to hybrid vehicles and, in particular, fully electric vehicles (EVs) is a major direction, as EVs have no direct tailpipe emissions. For any driver, the operating condition of the car is important, and of all the testing and checking actions of a vehicle, the most important is the Periodic Technical Inspection, which we all know by the abbreviated name ITP.

comparative analysis, vehicles, emissions

mechanical engineering

Presentation: poster