Estudio comparativo del efecto de aditivos comerciales para combustibles en las curvas características del motor E-TEC II en un vehículo Chevrolet Aveo Family 1500cc., a 2810 msnm

Abstract

The objective of this work was to carry out a comparative study of the effect of commercial additives for fuels in the characteristic curves of the ETEC-II engine in a Chevrolet Aveo Family vehicle 1500cc at 2810 masl. Its surveys were conducted in the downtown area of Riobamba city, to determine and select the three most commercialized additives. The obtaining of the characteristic curves of the motor (torque, power, and consumption), was carried out in an automotive dynamometer model LPS3000 of a Maha brand. In which the three mixtures of additive plus extra fuel were studied, prepared according to the instructions of each manufacturer. Three tests were carried out to determine the torque and power curves, the consumption was obtained through the IM-240 cycle; where two tests were implemented with three runs for each mixture. The results of the surveys showed that the brands of the fuel additives octane booster of higher commercialization were the following: Abro, Liqui Moly, and Bardahl, which were identified with the characters A, B, and C indistinctly. The results were analyzed concerning the extra fuel mixture without additive, obtaining the following results: on the torque curve, the fuel mixture plus additive A got the best result with an increase of 1.2%; on the power curve, the fuel mixture plus additive B increased by 0.7% and, in the case of consumption, the fuel mixture without additive had best results. It is concluded that the fuel additives improve the curves engine characteristics, but not substantially in each variable. It is recommended to study the effect of curves when modifying additive concentrations in the fuel and the damage that it can cause to the environment.