Effect of the fuel blend E20(gasoline 80％-ethanol 20％)on the light vehicles operating in Colombia.

摘要

In 2001 the government of Colombia approved the use of fuel blend E10(gasoline 80％– ethanol 10％).The blend is used since September 2005,to reduce vehicle emissions,decrease the current dependency on fossil fuels,and promote the use of energy from renewable.In 2005 the Universidad Tecnológica de Pereira,the Ministry of Mines and Energy of Colombia,and ECOPETROL S.A.started to work in the research project entitled Protocol E20.The main goal of the project was to determine the effect the fuel blend E20(gasoline 80％-ethanol 20％)on the light vehicles(carburized and injected)operating in Colombia.The effects studied were associated with mechanical performance,vehicle emissions,and wear on vehicle parts.The testing methodology implemented was called twin vehicles.This methodology compared the behavior between two vehicles,one of them using E10 blend and the other one with E20.And it was applied on two carburized vehicles and two vehicles with electronic fuel injection during 100,000 km each one.This was performed to assure a real comparison between the vehicle operated with E20 blend and the vehicle operated with E10 blend.The work showed that it was technically possible in Colombia to perform the transition from E10 blend to E20 blend on both test vehicles selected for the study.Such vehicles are considered representative for the colombian light fleet due to the fact that each vehicle went over 100,000 km and none of them revealed any negative changes.