Análisis comparativo entre las curvas de torque, potencia y consumo especifico de un motor Chevrolet Aveo 1.6l al realizarle una modificación de cilindrada

Abstract

The analysis of the performance of an internal combustion engine is necessary for the development of new technologies derived from this type of engine and in its evolution. This study aimed to compare the engine performance in a state before and after modifying its displacement, comparing the curves of torque characteristic, power, and specific fuel consumption. The deductive method was used in this study to establish as premises that by modifying the structure of the engine, its performance would be altered. The curves were obtained in a motor dynamometer that based its operation on parasitic currents, determining the brake that this exerted on the motor through a regulating current source. To establish as premises that by modifying the structure of the motor, its performance would be altered. The curves were obtained in a motor dynamometer that bases its operation on parasitic currents, determining the brake that exerted on the motor through a current regulating source. A series of tests were carried out at different amperages to establish the necessary brake to obtain the necessary curves for the analysis. To determine the planning measurement in the engine block, the piston stroke measurement was carried out to compare it with the length that appears in the technical datasheet. The studied operation was brushing the head that does not modify the displacement but modifies the compression ratio, the same consequence of the displacement modification. As a result of the procedure, there was an increase in the power and torque parameters to a lesser extent, with fuel consumption being affected by the increase in the compression ratio, showing advantages, and disadvantages when modifying the engine structure. In conclusion, an increase in the general performance of the engine of 10% was obtained, a figure that is quite a success considering the modification made. Finally, it is recommended to follow the procedures detailed in the methodology so as not to alter the parameters necessary to carry out the tests on the engine.