LPG, A SOLUTION FOR OLD VEHICLES POLLUTION REDUCTION

This paper presents a study regarding the emissions produced by the old vehicle engines, and researches about the LPG as an alternative fuel for SIE. The engines utilizing LPG constitute an important part of the ecological vehicle engine options. Experimental research has been done for one a light vehicle, Dacia (the year 2002) equipped with a 1397 (cm3 ) Spark Ignition Engine with Power = 46 (kW) at 5500 (rpm) and Single Point Injection system. There were been made two tests, for each type of fuel (gasoline and LPG), for several increasing engine speeds, using a portable analyzer, GA-21 plus. The parameters measured with the analyzer and used in the analysis are: CO, CO2 , NO, NO2 and SO2 . It was concluded that the highest pollutants values are when the vehicle was fueled with gasoline. In conclusion, Liquefied Petroleum Gas is the optimal solution in order to reduce the pollution produced by the old running vehicles.