Estudo do desempenho do motor Fiat Fire 1.0

Abstract

This work presents the validation of the characteristic power curve and the characteristic torque curve for the Fiat Fire 1.0 engine, using a zero dimensional simulator. To validate the results, the characteristic power and the characteristic torque curves generated by the simulator are compared with the actual characteristic power and characteristic torque curves of this engine and relative errors between curve points are calculated to quantify how close the simulation was to reality. Firstly, a bibliographic review of spark ignition internal combustion engines (ICE) was done, starting with it’s historical evolution and it’s importance for society, and later focusing on it’s types, mode of operation and important parameters for the study and development of this type of engine. Posteriorly, it describes how the simulator works and the input data requested. Then, the simulation was performed and the results obtained in the simulation of the characteristic power and characteristic torque curves were compared with the real curves. Relative errors between the curves were calculated and then, a detailed analysis of important parameters for the construction of these curves was made, in order to understand the obtained errors. Understanding the errors from computer simulations is the key to predicting engine performance.