Abstract
The relative environmental impact of vehicles is still uncertain, particularly in countries like Montenegro, where increase of number of vehicles was over 100% in last 5 years.
This paper reports on regulated and non-regulated emission measurements for 1980-2001 year model gasoline engine powered vehicles of different manufacturers, and their contribution to pollution formation, toxic levels on global worming in urban zones of Montenegro, which is the first ecological state in the world. Regulated and nonregulated emission from older and current vehicles were measured to assess the environmental impact of vehicles and to help to determine the emission characteristics of the vehicles powered by gasoline engines. The vehicle emission was measured according to the European Motor Vehicle Emission Group (MVEG) cycle.
Large number of vehicles was tested in centers for technical inspection of vehicles in Podgorica (Capitol city of Montenegro). Measured emission included CO, HC, and CO2. These results were compared with prescribed values of exhaust emission by the vehicle manufacturers.
Numerous older vehicles without regular technical inspection and poor fuel and lubricant qualities are the most influential factors on deteriorated environmental conditions in Podgorica. These results indicate a need to have better maintenance of vehicles and usage of fuels and lubricants of better quality.