Implementación de una ecu programable MS3 en un vehículo fiat uno fire y análisis comparativo de par motor, potencia y gases contaminates frente a la original

Abstract

The ignition engines are limited by the octane and stoichiometric ratio, as well as the electronic management of the control system. The manufacturer delimits parameters in the electronic management with the objective of safeguarding and extending the life of the internal combustion engine. The objective of this research is to implement an electronic control unit (ECU) that allows modifying the parameters of: fuel injection time and spark advance in a 2012 Fiat Uno Fire vehicle, and consequently perform a comparative analysis of the characteristic curves of torque and power through a roller dynamometer according to the SAE J1349 standard and pollutant emissions by applying the NTE INEN 2204 standard. The methodology implemented is inductive, deductive and experimental. The modification of parameters of the new ECU called MS3, the fuel injection time and advance to spark jump were adjusted by means of the TunerStudio software. The results obtained from the torque and power test show that by implementing the MS3 ECU an increase of 35% in power and 22.72% in torque was obtained compared to the factory ECU, achieving a maximum power of 40 kW at 4950 rpm and a maximum torque of 66 Nm at 3000 rpm. The pollutant emission samples show that at idle CO increased by 30% and HC by 17.55%, while at partial load CO increased by 24.13% and HC by 5.49% compared to the factory ECU.