Incidencia del Cambio de Viscosidad del Aceite en las Emisiones de CO2 y en las Pérdidas Mecánicas de un Vehículo con Motor de Combustión Interna por Compresión

Abstract

This work aims to study the incidence of oil viscosity change in CO2 emissions and mechanical losses. Therefore, a diesel van with 3000 cc turbocharged engine was used, in this vehicle, fuel consumption values were recorded from the first oil change at 204631 km, this in order to visualize the performance behavior of fuel over the life of the lubricant. From the second lubricant change at 209965 km, torque and power tests were performed to find mechanical losses using the indicator diagram method, in consequence, the LSP 3000 chassis dynamometer was used at 0, 3500 and 5000 km and to determine the change in viscosity of the lubricant three extractions of 100 ml were made at 2500, 3500 and 5000km, the samples were sent to the EPN (Escuela Politécnica Nacional) Lubricant Laboratory to assess kinematic viscosity at 100 °C; finally in the third lubricant change at 215095 km is continued only with the recording of fuel consumption data. As a result of this experimentation, it was obtained that the fuel economy in the three lubricant changes has the similar behavior where there is a decrease of 11% from 3500 km, because it goes from 36 km/gal to 32 km/gal, so CO2 emissions increased by 18,2%; it was also found that a variation in the kinematic viscosity of the oil that increased by 6,48% caused a 41,36% increase in mechanical losses, compared to initial losses.